Omega Vehicle Security Switch CN3271 Series User Manual

CN3271-add2.pmd  
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APPROVALS This instrument is U.L. and c.U.L. approved as controller.  
CONTENTS  
MOUNTING REQUIREMENTS ............................ 1  
DIMENSIONS AND REAR TERMINALS ................ 2  
PANEL CUT OUT ........................................... 3  
WIRING GUIDELINES ...................................... 3  
PRELIMINARY HARDWARE SETTINGS ............... 8  
CONFIGURATION PROCEDURE ........................ 9  
OPERATING MODE ...................................... 15  
Normal display mode .............................. 15  
Indicators ............................................. 16  
Key functions in normal display mode ........ 16  
Operative parameter display mode ............ 16  
Key functions in  
operative parameter display mode ............ 17  
Operating parameters ............................ 17  
Limiter function ..................................... 18  
Alarm functions ..................................... 19  
Serial link ............................................ 19  
ERROR MESSAGES ..................................... 20  
GENERAL SPECIFICATIONS .......................... 21  
MAINTENANCE ............................................ 24  
DEFAULT PARAMETERS .............................. A.1  
APPENDIX B .............................................. B.1  
LHL-COPERTINA.pmd  
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MOUNTING REQUIREMENTS  
The instrument is shipped with a rubber panel  
gasket (50 to 60 Sh). To insure the IP65 and  
NEMA 4 protection, insert the panel gasket  
between the instrument and the panel as shown  
below.  
Select a mounting location with the following  
characteristics:  
1) Minimal vibration.  
2) An ambient temperature range between 0 and  
50°C (32 and 122 °F).  
Install the instrument as follows:  
3) Easy access to the rear of the instrument.  
4) No corrosive gases (sulfuric gas, ammonia,  
etc.).  
5) No water or other fluid (i.e. condensation).  
6) Relative humidity of 20% to 80% non  
condensing.  
1) Insert the instrument in the gasket.  
2) Insert the instrument in the panel cutout.  
3) Pushing the instrument against the panel,  
insert the mounting bracket.  
4) Torque the mounting bracket screws between  
0.3 and 0.4 Nm (2.66 and 3.54 lbf-in).  
5) To insure NEMA 4X/IP65 protection, make  
sure the instrument does not move within the  
cutout .  
The instrument can be mounted on a panel up to  
15 mm (0.591 in) thick with a square cutout of  
45 x 45 mm (1.772 x 1.772 in). For outline refer  
to Dimensions and Panel Cutout.  
Panel surface texture must be better than 6.3 µm.  
Screw  
bracket  
Panel  
Gasket  
Fig. 1  
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DIMENSIONS AND REAR TERMINAL BLOCKS  
Without RS-485  
With RS-485  
Fig.2  
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PANEL CUTOUT  
                                                                                                                                                                                                                             
WIRIN  
                                                                                                                                                                                                                              
                                                                                                                                                                                                                                 
                                                                                                                                                                                                                                 
                                                                                                                                                                                                                                  
                                                                                                                                                                                                                                  
                                                                                                                                                                                                                                    
                                                                                                                                                                                                                                    
                                                                                                                                                                                                                                     
                                                                                                                                                                                                                                     
                                                                                                                                                                                                                                        
G
                                                                                                                                                                                                                                        
                                                                                                                                                                                                                                             
GU  
                                                                                                                                                                                                                                             
                                                                                                                                                                                                                                                
                                                                                                                                                                                                                                                
                                                                                                                                                                                                                                                  
I
                                                                                                                                                                                                                                                  
                                                                                                                                                                                                                                                   
D
                                                                                                                                                                                                                                                   
                                                                                                                                                                                                                                                      
EL  
                                                                                                                                                                                                                                                      
                                                                                                                                                                                                                                                        
                                                                                                                                                                                                                                                        
                                                                                                                                                                                                                                                          
IN  
                                                                                                                                                                                                                                                          
                                                                                                                                                                                                                                                           
                                                                                                                                                                                                                                                           
                                                                                                                                                                                                                                                             
ES  
                                                                                                                                                                                                                                                              
                                                                                                                                                                                                                                                                
                                                                                                                                                                                                                                                                
A) Measuring Inputs  
NOTE: Any external components (like Zener di-  
odes, etc.) connected between sensor and input  
terminals may cause errors in measurement due to  
excessive and/or not balanced line resistance or  
possible leakage currents.  
TC Input  
10  
9
+
_
Shield  
Shield  
10  
9
+
_
Fig.3  
Fig. 4 THERMOCOUPLE INPUT WIRING  
NOTE:  
1) Do not run input wires with power cables.  
2) For TC wiring use proper compensating cable,  
preferably shielded (see Appendix B).  
3) Shielded cable should be grounded at one end  
only.  
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RTD INPUT  
RTD  
                                                                                                                                                                                                                             
L
                                                                                                                                                                                                                              
                                                                                                                                                                                                                               
I
                                                                                                                                                                                                                                
                                                                                                                                                                                                                                
N
                                                                                                                                                                                                                                
                                                                                                                                                                                                                                   
EAR  
                                                                                                                                                                                                                                   
                                                                                                                                                                                                                                     
                                                                                                                                                                                                                                     
                                                                                                                                                                                                                                        
                                                                                                                                                                                                                                        
                                                                                                                                                                                                                                            
IN  
                                                                                                                                                                                                                                            
                                                                                                                                                                                                                                             
                                                                                                                                                                                                                                             
                                                                                                                                                                                                                                                
PUT  
                                                                                                                                                                                                                                                
                                                                                                                                                                                                                                                  
                                                                                                                                                                                                                                                  
                                                                                                                                                                                                                                                     
                                                                                                                                                                                                                                                     
mA,  
mV  
or  
RTD  
10  
9
+
_
V
Shield  
+
10  
9
8
9
10  
8
9
10  
mA  
mV  
or  
_
V
Fig. 5 RTD INPUT WIRING  
NOTE:  
G
1) Don’t run input wires together with power  
cables.  
2) Pay attention to the line resistance; a high line  
resistance may cause measurement errors.  
3) When shielded cable is used, it should be  
grounded at one side only to avoid ground loop  
currents.  
Fig. 6 mA, mV AND V INPUTS WIRING  
NOTE:  
1) Don’t run input wires together with power  
cables.  
4) The resistance of the 3 wires must be the  
same.  
2) Pay attention to the line resistance; a high line  
resistance may cause measurement errors.  
3) When shielded cable is used, it should be  
grounded at one side only to avoid ground loop  
currents.  
4) The input impedance is equal to:  
Less than 5 for 20 mAdc input  
Greater than 1 Mfor 60 mVdc input  
Greater than 400 Kfor 5 Vdc and 10 Vdc  
input  
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B) Logic Input (for models with RS-485 only)  
                                                                                                                                                                                                                             
C.  
                                                                                                                                                                                                                              
                                                                                                                                                                                                                                
                                                                                                                                                                                                                                
                                                                                                                                                                                                                                 
1
                                                                                                                                                                                                                                 
                                                                                                                                                                                                                                   
)
                                                                                                                                                                                                                                   
                                                                                                                                                                                                                                      
R
                                                                                                                                                                                                                                      
                                                                                                                                                                                                                                         
e
                                                                                                                                                                                                                                         
                                                                                                                                                                                                                                           
l
                                                                                                                                                                                                                                           
                                                                                                                                                                                                                                           
a
                                                                                                                                                                                                                                           
                                                                                                                                                                                                                                             
y
                                                                                                                                                                                                                                             
                                                                                                                                                                                                                                                 
Out  
                                                                                                                                                                                                                                                 
                                                                                                                                                                                                                                                    
                                                                                                                                                                                                                                                    
                                                                                                                                                                                                                                                      
                                                                                                                                                                                                                                                      
                                                                                                                                                                                                                                                       
p
                                                                                                                                                                                                                                                       
                                                                                                                                                                                                                                                         
ut  
                                                                                                                                                                                                                                                         
                                                                                                                                                                                                                                                           
                                                                                                                                                                                                                                                           
                                                                                                                                                                                                                                                            
s
                                                                                                                                                                                                                                                            
This input is used for remote acknowledgement  
(reset).  
NO - OUT 1  
C - OUT 1  
OUT 1  
1
2
3
Safety note:  
-
-
-
-
Do not run logic input wiring with AC power  
cables.  
Use an external dry contact capable of  
switching 0.5 mA, 5 Vdc.  
The instrument needs 100 ms to recognize a  
contact status variation.  
The logic inputs are NOT isolated from the  
measuring input.  
Class 1  
NC - OUT 1  
C
OUT 2  
Class 1  
(Alarm)  
6
7
NO  
Logic input  
14  
Fig. 8  
The OUT 1 contact rating is 3A/250V AC on  
resistive load.  
15  
The OUT 2 contact rating is 2A/250V AC on  
resistive load.  
Fig.7  
The number of operations is 1 x 105 at specified  
rating.  
NOTES 1) To avoid electric shock, connect power  
line at the end of the wiring procedure.  
2) For power connections use No 16 AWG  
or larger wires rated for at last 75 °C.  
3) Use cupper conductors only.  
4) Don’t runinput wireswithpowercables.  
All relay contacts are protected by varistor against  
inductive load with inductive component up to 0.5 A.  
The following recommendations avoid serious  
problems which may occur, when relay outputs  
are used with inductive loads.  
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C.2) Inductive Loads  
                                                                                                                                                                                                                             
D)  
                                                                                                                                                                                                                              
                                                                                                                                                                                                                                
                                                                                                                                                                                                                                
                                                                                                                                                                                                                                   
Ser  
                                                                                                                                                                                                                                   
                                                                                                                                                                                                                                     
                                                                                                                                                                                                                                      
                                                                                                                                                                                                                                       
                                                                                                                                                                                                                                        
                                                                                                                                                                                                                                         
i
                                                                                                                                                                                                                                         
                                                                                                                                                                                                                                         
a
                                                                                                                                                                                                                                         
                                                                                                                                                                                                                                           
l
                                                                                                                                                                                                                                           
                                                                                                                                                                                                                                              
In  
                                                                                                                                                                                                                                              
                                                                                                                                                                                                                                               
                                                                                                                                                                                                                                               
                                                                                                                                                                                                                                                 
t
                                                                                                                                                                                                                                                 
                                                                                                                                                                                                                                                  
er  
                                                                                                                                                                                                                                                  
                                                                                                                                                                                                                                                    
                                                                                                                                                                                                                                                    
                                                                                                                                                                                                                                                     
f
                                                                                                                                                                                                                                                      
                                                                                                                                                                                                                                                      
ac  
                                                                                                                                                                                                                                                       
                                                                                                                                                                                                                                                        
                                                                                                                                                                                                                                                         
                                                                                                                                                                                                                                                          
e
                                                                                                                                                                                                                                                           
High voltage transients may occur switching  
inductive loads.  
Through the internal contacts these transients  
may introduce disturbances which can affect the  
performance of the instrument.  
For units built with optional RS-485 communication  
interface.  
RS-485 interface allows to connect up to 30  
devices with one remote master unit.  
For all the outputs, the internal protection  
(varistor) assures a correct protection up to 0.5 A  
of inductive component.  
I
A'/A  
B'/B  
A/A'  
B/B'  
N
S
T
R
U
M
E
N
T
11  
12  
13  
M
A
S
T
E
R
The same problem may occurs when a switch is  
used in series with the internal contacts as shown  
in Fig. 9.  
C
R
COMMON  
POWER  
LINE  
LOAD  
Fig. 10 - RS-485 WIRING  
The cable length must not exceed 1.5 km at 9600  
BAUD.  
NOTES:  
Fig. 9 EXTERNAL SWITCH IN SERIES WITH  
THE INTERNAL CONTACT  
1) This RS 485 serial interface is insulated.  
2) The following report describes the signal sense  
of the voltage appearing across the  
interconnection cable as defined by EIA for  
RS-485.  
a) The ” A ” terminal of the generator shall be  
negative with respect to the ” B ” terminal for  
a binary 1 (MARK or OFF) state.  
b) The ” A ” terminal of the generator shall be  
positive with respect to the ” B ” terminal  
In this case it is recommended to install an  
additional RC network across the external contact  
as show in Fig. 9  
The value of capacitor (C) and resistor (R) are  
shown in the following table.  
LOAD  
(mA)  
C
R
P.  
(W)  
OPERATING  
VOLTAGE  
(µF) ()  
<40 mA 0.047 100  
<150 mA 0.1 22  
<0.5 0.33 47  
1/2  
2
2
260 V AC  
260 V AC  
260 V AC  
for  
a
binary 0 (SPACE or ON).  
A
The cable involved in relay output wiring must be  
as far away as possible from input or communica-  
tion cables.  
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E) Power Line and grounding  
N, L2  
I
A'/A  
B'/B  
A/A'  
B/B'  
N
S
T
R
U
M
E
N
T
11  
12  
13  
4
M
A
S
T
E
R
POWER SUPPLY  
100 to 240 Vac  
24 Vac/Vdc  
5
R (S,T), L1  
Fig.12  
N, L2  
R (S,T), L1  
COMMON  
NOTES:  
1) Before connecting the power line, check that  
the voltage is correct (see Model Number).  
2) For supply connections use 16 AWG or larger  
wires rated for at least 75 °C.  
I
11  
12  
13  
N
S
T
R
U
M
E
N
T
3) Use copper conductors only.  
4) Do not run input wires with power cables.  
5) Polarity does not matter for 24 Vdc wiring.  
6) The power supply input is NOT fuse protected.  
Please provide it externally.  
Power supply  
24 V AC/DC  
100/240 V AC  
Type Current  
Voltage  
250 V  
250 V  
T
T
500 mA  
125 mA  
When fuse is damaged, it is advisable to verify  
the power supply circuit, so that it is necessary to  
send back the instrument to your supplier.  
7) Safety requirements for permanently  
connected equipment:  
Fig.11  
-
Include a switch or circuit-breaker in the  
installation.  
-
Place the switch in close proximity to the  
equipment and within easy reach of the  
operator.  
-
Mark the switch as the disconnecting  
device for the equipment.  
NOTE: A single switch or circuit-breaker can  
drive more than one instrument.  
8) When the NEUTRAL line is present, connect it  
to terminal 4.  
9) To avoid shock and possible instrument  
damage, connect power last.  
7
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High - Low Limiter without RS-485  
PRELIMINARY HARDWARE  
SETTINGS  
1) Remove the instrument from its case.  
2) Set J106 according to the desired input type as  
shown in the following figure.  
2
4
6
8
7
J106  
V101  
1
3
5
INPUT  
TYPE  
J106  
5-6  
1-2  
3-4  
7-8  
TC-RTD close open open open  
60 mV close open open open  
5 V  
open close open open  
open open close open  
open open open close  
10 V  
20 mA  
Fig.13.B  
High - Low Limiter with RS-485  
2
4
6
5
8
7
J106  
1
3
V101  
Fig.13.A  
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The following is a complete list of parameters. The  
lower display will show the parameter code (L1 to d1)  
and the upper display will show the selection code or  
numerical value. No timeout is applied in the  
configuration mode.  
CONFIGURATION PROCEDURE  
CONFIGURATION KEY FUNCTIONS  
RESET In ConfigurationMode,itisusedonlytoscroll  
backparameterswithouttomemorizeanew  
parameter value.  
Usedin ConfigurationModetodecreasethe  
parameter value.  
Used in Configuration Mode to increase the  
parameter value.  
Used to memorize the new parameter  
value and go to the next parameter.  
Loads the default parameters.  
L 1  
=
Serial Interface Protocol  
(Skipped if option is not available.)  
OFF = No serial interface  
nbUS = Modbus  
FUNC  
+
jbUS = Jbus  
+ FUNC or + FUNC  
L 2  
=
Serial Link Device Address  
Increases/decreases values at a higher rate  
when modifying parameters.  
+ RESET or + RESET  
(Skipped if option is not available or L1 = OFF)  
From 1 to 255  
NOTE: EIA standard allows no more than 31 device  
connected by one RS-485.  
JumpstotheMaximumorMinimumparam-  
eter value when modifying parameters.  
L 3  
=
Baud Rate for Serial Link  
CONFIGURATION PROCEDURE  
1) Remove the instrument from its case.  
2) Open switch V101 (See illustrations under  
“Preliminary Hardware Settings.”)  
(Skipped if option is not available or L1 = OFF)  
Set value from 600 to 19200 baud.  
(19200 baud is shown on display as 1920)  
3) Re-insert the instrument in its case.  
4) Switch on power to the instrument.  
The upper display will show COnF.  
L 4  
=
Byte Format for Serial Link  
(Skipped if option is not available or L1 = OFF)  
8E = 8 bits + even parity  
8O = 8 bits + odd parity  
NOTE : If "CAL" indication is displayed, press  
immediately the V pushbutton and return to  
the configuration procedure.  
8
= 8 bits without parity  
5) Press the “ ” key and the lower display will  
show the firmware version.  
Press the "FUNC" key to start the configuration  
procedure with the first parameter (L1).  
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r 1  
0
1
2
3
4
5
6
7
8
9
                                                                                                                                        
=
                                                                                                                                        
                                                                                                                                          
I
                                                                                                                                          
                                                                                                                                           
n
                                                                                                                                           
                                                                                                                                             
p
                                                                                                                                             
                                                                                                                                                
u
                                                                                                                                                
                                                                                                                                                  
t
                                                                                                                                                  
                                                                                                                                                     
T
                                                                                                                                                     
                                                                                                                                                        
y
                                                                                                                                                        
                                                                                                                                                         
p
                                                                                                                                                          
                                                                                                                                                            
e
                                                                                                                                                            
                                                                                                                                                                
a
                                                                                                                                                                
                                                                                                                                                                  
n
                                                                                                                                                                  
                                                                                                                                                                    
d
                                                                                                                                                                     
                                                                                                                                                                         
R
                                                                                                                                                                         
                                                                                                                                                                            
a
                                                                                                                                                                            
                                                                                                                                                                              
n
                                                                                                                                                                              
                                                                                                                                                                                
g
                                                                                                                                                                                
                                                                                                                                                                                  
e
                                                                                                                                                                                  
                                                                                                                                                                                       
V
                                                                                                                                                                                       
                                                                                                                                                                                         
a
                                                                                                                                                                                         
                                                                                                                                                                                           
l
                                                                                                                                                                                           
                                                                                                                                                                                            
u
                                                                                                                                                                                            
                                                                                                                                                                                              
e
                                                                                                                                                                                              
                                                                                                                                                                                                                             
r
                                                                                                                                                                                                                              
                                                                                                                                                                                                                               
2
                                                                                                                                                                                                                               
                                                                                                                                                                                                                                   
=
                                                                                                                                                                                                                                   
                                                                                                                                                                                                                                        
D
                                                                                                                                                                                                                                        
                                                                                                                                                                                                                                           
e
                                                                                                                                                                                                                                           
                                                                                                                                                                                                                                             
c
                                                                                                                                                                                                                                             
                                                                                                                                                                                                                                               
i
                                                                                                                                                                                                                                               
                                                                                                                                                                                                                                                
m
                                                                                                                                                                                                                                                
                                                                                                                                                                                                                                                   
a
                                                                                                                                                                                                                                                   
                                                                                                                                                                                                                                                     
l
                                                                                                                                                                                                                                                     
                                                                                                                                                                                                                                                         
P
                                                                                                                                                                                                                                                         
                                                                                                                                                                                                                                                           
o
                                                                                                                                                                                                                                                           
                                                                                                                                                                                                                                                             
i
                                                                                                                                                                                                                                                             
                                                                                                                                                                                                                                                              
n
                                                                                                                                                                                                                                                              
                                                                                                                                                                                                                                                                
t
                                                                                                                                                                                                                                                                 
                                                                                                                                                                                                                                                                    
P
                                                                                                                                                                                                                                                                    
                                                                                                                                                                                                                                                                       
o
                                                                                                                                                                                                                                                                       
                                                                                                                                                                                                                                                                         
s
                                                                                                                                                                                                                                                                         
                                                                                                                                                                                                                                                                           
i
                                                                                                                                                                                                                                                                           
                                                                                                                                                                                                                                                                            
t
                                                                                                                                                                                                                                                                            
                                                                                                                                                                                                                                                                             
i
                                                                                                                                                                                                                                                                             
                                                                                                                                                                                                                                                                              
o
                                                                                                                                                                                                                                                                              
                                                                                                                                                                                                                                                                                
n
                                                                                                                                                                                                                                                                                
= TC  
= TC  
= TC  
= TC  
= TC  
= TC  
= TC  
= TC  
= TC  
= TC  
J
From  
From  
From  
From  
From  
From  
From  
From  
From  
From  
From  
From  
From  
-100 to 1000 °C  
-100 to 1370 °C  
-200 to  
-100 to  
-100 to 1400 °C  
-50 to 1760 °C  
-50 to 1760 °C  
(Available only for linear range r1 = 15 to 22)  
K
T
_ _ _ _ .  
_ _ _ . _  
_ _ . _ _  
_ . _ _ _  
= No decimal  
400 °C  
800 °C  
= One decimal figure  
= Two decimal figures  
= Three decimal figures  
E
N
S
R
B
L
U
G
D
C
0
to 1820 °C  
r3  
=
Initial value of the readout scale  
-100 to  
-200 to  
900 °C  
600 °C  
(Available only for linear range r1 = 15 to 22)  
Range: From -1999 to 9999  
10 = TC  
11 = TC  
12 = TC  
0
0
0
to 2300 °C  
to 2300 °C  
to 2300 °C  
r4  
=
final value of the readout scale  
13 = TC Plat. II From  
14 = RTD Pt 100 From  
-100 to 1400 °C  
(Available only for linear range r1 = 15 to 22)  
Range: From -1999 to 9999  
-200 to  
to  
12 to  
850 °C  
60 mV  
60 mV  
20 mA  
20 mA  
15 = Linear  
16 = Linear  
17 = Linear  
18 = Linear  
19 = Linear  
20 = Linear  
21 = Linear  
22 = Linear  
From  
From  
From  
From  
From  
From  
From  
From  
From  
From  
From  
From  
From  
From  
From  
From  
From  
From  
From  
From  
From  
0
0
4
0
1
0
2
to  
to  
to  
to  
to  
to  
r5  
=
Offset Adjustment  
Range: From -500 to 500  
Offset value algebraically added to the measured  
value.  
5
5
V
V
V
V
10  
10  
23 = TC  
24 = TC  
25 = TC  
26 = TC  
27 = TC  
28 = TC  
29 = TC  
30 = TC  
31 = TC  
32 = TC  
33 = TC  
34 = TC  
35 = TC  
J
-150 to 1830 °F  
-150 to 2500 °F  
r6 =Time constant of the filter applied to  
the displayed value  
Range: From 0 (filter OFF) to 8 seconds.  
(First order filter with selected time constant.)  
K
T
E
N
S
R
B
L
U
G
D
C
-330 to  
750 °F  
-150 to 1470 °F  
-150 to 2550 °F  
-60 to 3200 °F  
-60 to 3200 °F  
32 to 3300 °F  
-150 to 1650 °F  
-330 to 1110 °F  
r7  
=
Alarm action on input fault.  
When the instrument detects an input failure  
condition, the alarm will operate as in presence of:  
uP = as in presence of the full scale value.  
doun = as in presence of the initial scale value.  
0
0
0
to 4170 °F  
to 4170 °F  
to 4170 °F  
36 = TC Plat. II From  
37 = RTD Pt100 From  
-150 to 2550 °F  
-330 to 1560 °F  
C1 = Type of limit action  
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Hi. = High limit (for heating process)  
Lo. = Low limit (for cooling process)  
Hi.Lo = High and low limit (for special process)  
generated the shutdown, no longer exists and the  
acknowledge action has been performed.  
The upper display flashes during a shutdown and  
returns to a steady display when the shutdown  
condition no longer exists.  
C2 = Rearming Mode  
O = Acknowledgementsrearm(reset)thelimiter(and  
restart the process) only if the condition which  
generated the shutdown status no longer exists  
(points A and C of the Example 1). It do not  
generate any effect if the condition which  
generated the shutdown status still exists (point  
B of the Example 1).  
I = Acknowledgements enable the automatic  
rearmament (reset) of the limiter if the  
condition which generated the shutdown  
status still exists (point B of the Example 2).  
(The instrument rearms (reset) automatically  
when the condition which generated the  
shutdown status no longer exists).  
When C2 = 0 and OUT 1 is OFF, the RESET LED is  
ON.  
When C2 = 1 one of the following condition may  
occur:  
- if no acknowledgement has been made, OUT 1 is  
OFF and the RESET LED is flashing;  
- if the acknowledgement has been made but the  
condition which generated the shutdown status  
still exists, OUT 1 is OFF and the RESET LED is  
steady ON.  
The shutdown condition can be stored in  
permanent memory (see C4).  
Acknowledgment can be performed by pressing  
the RESET key, by momentarily closing the  
external dry contact or by a command from the  
serial link.  
Notes about limiter function  
The relay of the output 1 operates in fail-safe mode  
(relay de-energized during shutdown condition) and  
latching mode.  
The length of the shutdown condition and max/min  
measured values are stored in memory and  
available for viewing until the next shutdown  
condition occurs.  
The OUT 1 turns OFF when:  
-
-
-
C1 = Hi and the measured value is greater than  
limiter threshold [“Su” parameter (see Operative  
parameters”)]or  
C1 = LO and the measured value is less than  
limiter threshold [“Su” parameter (see Operative  
parameters”)]or  
C1 = HiLO and the measured value is greater  
than “Su” parameter (see Operative parameters”)  
or less than “S1” parameter (see Operative  
parameters”).  
These informations are lost at power down.  
During a shutdown condition the max/min  
measured values are continuously updated and  
can be monitored.  
Example 1 - C1 = Hi and C2 = O  
The Out 1 remains OFF until the condition which  
11  
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C4  
0
                                                                                                                                                                                                                                       
=
                                                                                                                                                                                                                                       
                                                                                                                                                                                                                                           
S
                                                                                                                                                                                                                                           
                                                                                                                                                                                                                                              
h
                                                                                                                                                                                                                                              
                                                                                                                                                                                                                                                
u
                                                                                                                                                                                                                                                
                                                                                                                                                                                                                                                  
t
                                                                                                                                                                                                                                                  
                                                                                                                                                                                                                                                    
d
                                                                                                                                                                                                                                                    
                                                                                                                                                                                                                                                      
o
                                                                                                                                                                                                                                                      
                                                                                                                                                                                                                                                        
w
                                                                                                                                                                                                                                                        
                                                                                                                                                                                                                                                           
n
                                                                                                                                                                                                                                                           
                                                                                                                                                                                                                                                                
m
                                                                                                                                                                                                                                                                
                                                                                                                                                                                                                                                                   
e
                                                                                                                                                                                                                                                                   
                                                                                                                                                                                                                                                                     
m
                                                                                                                                                                                                                                                                     
                                                                                                                                                                                                                                                                         
o
                                                                                                                                                                                                                                                                         
                                                                                                                                                                                                                                                                           
r
                                                                                                                                                                                                                                                                           
                                                                                                                                                                                                                                                                            
y
                                                                                                                                                                                                                                                                            
= The shutdown condition will be saved (at  
next power up it will be reactivated)  
= The shutdown condition will be lost in  
case of power down  
HS  
(Limiter  
Hysteresis)  
Su  
(Limiter  
threshold)  
1
ON  
Relay OUT 1  
OFF  
C5 = Time Constant of the Filter applied  
to the Measured Value for Limit  
Action.  
ON  
Reset” LED  
OFF  
Range: From 0 (filter OFF) to 8 seconds  
Note: First order filter with selected time  
Constant.  
Flash  
Upper display  
FLASH  
FLASH  
Steady  
A, B, C = Acknowledgment actions.  
NOTE: Acknowledgment B has no effect.  
P1  
=
Alarm Function  
Example 2 - C1 = Hi and C2 = 1  
(Skipped when the option is not available)  
nonE = Not provided  
Su  
(Limiter  
threshold)  
AL.P = Process alarm  
AL.b = Band alarm  
AL.d = Deviation alarm  
When C1 = Hi.Lo, “AL.b” and “AL.d” are not  
available.  
HS  
(Limiter  
Hysteresis)  
ON  
Relay OUT 1  
OFF  
P2  
=
Alarm configuration  
ON  
(Skipped if option is not available or P1 = none)  
H.A. = High alarm with automatic reset  
Reset” LED  
FLASH  
FLASH  
FLASH  
FLASH  
OFF  
L.A.  
=
Low alarm with automatic reset  
Flash  
Upper display  
Steady  
H.A.Ac = High alarm with automatic reset and  
"Silence" function.  
A, B = Acknowledgment actions.  
L.A.Ac = Low alarm with automatic reset and  
"Silence" function.  
H.L.  
L.L.  
=
=
High alarm with manual reset  
Low alarm with manual reset  
C3  
Auto = Automatic rearm  
nAn Manual rearm  
=
Rearm at Power-up  
=
12  
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NOTE:  
                                                                                                                                                                                                                             
Exam  
                                                                                                                                                                                                                              
                                                                                                                                                                                                                                
                                                                                                                                                                                                                                
                                                                                                                                                                                                                                 
                                                                                                                                                                                                                                 
                                                                                                                                                                                                                                   
                                                                                                                                                                                                                                   
                                                                                                                                                                                                                                      
p
                                                                                                                                                                                                                                      
                                                                                                                                                                                                                                        
le  
                                                                                                                                                                                                                                         
                                                                                                                                                                                                                                         
                                                                                                                                                                                                                                         
for P2 = H.L.  
1) For band alarm, H.A./H.A.Ac/H.L. signifies  
outside band alarm, while L.A./ L.A.Ac/L.L.  
signifies inside band alarm.  
2) The "Silence" function allows the manual reset  
of the alarm even if the alarm condition is still in  
progress.  
(Alarm  
threshold)  
(Alarm  
Hysteresis)  
Alarm status*  
Relay  
Non alarm status  
Example for P2 = H.A.  
ON  
ALM LED  
OFF  
(Alarm  
threshold)  
FLASH  
FLASH  
(Alarm  
Hysteresis)  
Manual  
reset  
Manual  
reset  
Alarm status*  
Relay  
Non alarm status  
ON  
ALM LED  
OFF  
* Alarm Status: Relay energized (P3 = dir)  
Relay de-energized (P3 =rEV)  
FLASH  
FLASH  
Manual  
reset  
* Alarm Status: Relay energized (P3 = dir)  
Relay de-energized (P3 =rEV)  
P3  
=
Alarm Action  
(Skipped if option not is available or P1 = none)  
dir  
=
Direct action  
(Relay energized in alarm condition)  
Example for P2 = H.A.A.c  
rEV = Reverse action  
(Relay energized in non-alarm condition)  
(Alarm  
threshold)  
(Alarm  
Hysteresis)  
Alarm status*  
Relay  
Non alarm status  
ON  
ALM LED  
OFF  
FLASH  
FLASH  
Manual  
reset  
* Alarm Status: Relay energized (P3 = dir)  
Relay de-energized (P3 =rEV)  
13  
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P4  
                                                                                                                                           
=
                                                                                                                                           
                                                                                                                                                    
A
                                                                                                                                                    
                                                                                                                                                       
l
                                                                                                                                                       
                                                                                                                                                        
a
                                                                                                                                                        
                                                                                                                                                          
r
                                                                                                                                                          
                                                                                                                                                           
m
                                                                                                                                                            
                                                                                                                                                                 
S
                                                                                                                                                                 
                                                                                                                                                                    
t
                                                                                                                                                                    
                                                                                                                                                                     
a
                                                                                                                                                                     
                                                                                                                                                                       
n
                                                                                                                                                                       
                                                                                                                                                                         
d
                                                                                                                                                                         
                                                                                                                                                                            
b
                                                                                                                                                                            
                                                                                                                                                                              
y
                                                                                                                                                                              
                                                                                                                                                                                  
(m  
                                                                                                                                                                                  
                                                                                                                                                                                   
                                                                                                                                                                                    
                                                                                                                                                                                       
a
                                                                                                                                                                                       
                                                                                                                                                                                         
s
                                                                                                                                                                                         
                                                                                                                                                                                           
k
                                                                                                                                                                                           
                                                                                                                                                                                             
)
                                                                                                                                                                                             
                                                                                                                                                                                                
F
                                                                                                                                                                                                 
                                                                                                                                                                                                   
u
                                                                                                                                                                                                   
                                                                                                                                                                                                     
n
                                                                                                                                                                                                     
                                                                                                                                                                                                       
c
                                                                                                                                                                                                       
                                                                                                                                                                                                         
t
                                                                                                                                                                                                         
                                                                                                                                                                                                           
i
                                                                                                                                                                                                           
                                                                                                                                                                                                            
o
                                                                                                                                                                                                            
                                                                                                                                                                                                              
n
                                                                                                                                                                                                              
                                                                                                                                                                                                                             
d
                                                                                                                                                                                                                              
                                                                                                                                                                                                                                
1
                                                                                                                                                                                                                                
                                                                                                                                                                                                                                    
=
                                                                                                                                                                                                                                    
                                                                                                                                                                                                                                         
D
                                                                                                                                                                                                                                         
                                                                                                                                                                                                                                            
i
                                                                                                                                                                                                                                            
                                                                                                                                                                                                                                             
g
                                                                                                                                                                                                                                             
                                                                                                                                                                                                                                               
i
                                                                                                                                                                                                                                               
                                                                                                                                                                                                                                                
t
                                                                                                                                                                                                                                                
                                                                                                                                                                                                                                                 
a
                                                                                                                                                                                                                                                 
                                                                                                                                                                                                                                                   
l
                                                                                                                                                                                                                                                   
                                                                                                                                                                                                                                                       
I
                                                                                                                                                                                                                                                       
                                                                                                                                                                                                                                                        
n
                                                                                                                                                                                                                                                        
                                                                                                                                                                                                                                                          
p
                                                                                                                                                                                                                                                          
                                                                                                                                                                                                                                                            
u
                                                                                                                                                                                                                                                            
                                                                                                                                                                                                                                                              
t
                                                                                                                                                                                                                                                               
                                                                                                                                                                                                                                                                  
(c  
                                                                                                                                                                                                                                                                  
                                                                                                                                                                                                                                                                   
                                                                                                                                                                                                                                                                   
                                                                                                                                                                                                                                                                     
o
                                                                                                                                                                                                                                                                     
                                                                                                                                                                                                                                                                        
n
                                                                                                                                                                                                                                                                        
                                                                                                                                                                                                                                                                          
t
                                                                                                                                                                                                                                                                          
                                                                                                                                                                                                                                                                           
a
                                                                                                                                                                                                                                                                           
                                                                                                                                                                                                                                                                             
c
                                                                                                                                                                                                                                                                             
                                                                                                                                                                                                                                                                               
t
                                                                                                                                                                                                                                                                               
                                                                                                                                                                                                                                                                                   
c
                                                                                                                                                                                                                                                                                   
                                                                                                                                                                                                                                                                                     
l
                                                                                                                                                                                                                                                                                     
                                                                                                                                                                                                                                                                                      
o
                                                                                                                                                                                                                                                                                      
                                                                                                                                                                                                                                                                                        
s
                                                                                                                                                                                                                                                                                        
                                                                                                                                                                                                                                                                                          
u
                                                                                                                                                                                                                                                                                          
                                                                                                                                                                                                                                                                                             
r
                                                                                                                                                                                                                                                                                             
                                                                                                                                                                                                                                                                                              
e
                                                                                                                                                                                                                                                                                              
                                                                                                                                                                                                                                                                                                
)
                                                                                                                                                                                                                                                                                                
(Skipped if option is not available or P1= none)  
(This is a read only parameter)  
OFF =  
On  
Standby function disabled  
Standby function enabled  
Enb =  
dlS  
Digital input enabled  
Digital input disabled  
=
=
(The digital input is used as a remote  
Acknowledgment .)  
If the alarm is programmed as band or deviation,  
this function masks the alarm condition at start up  
and after a “Su” (limit threshold) changement until  
the process variable reaches the alarm threshold,  
plus or minus hysteresis. This standby function  
masks a Process Alarm condition at start up until  
the process variable reaches the alarm threshold  
plus or minus hysteresis.  
The configuration procedure is now completed.  
The display will show "COnF".  
PF =  
Time Constant of the Filter  
applied to the Measured Value for  
Alarm Action  
(Skipped if option is not available or P1 = none)  
Range: From 0 (filter OFF) to 8 seconds  
(First order filter with selected time constant.)  
n 1 = Safety Lock  
0
=
UNLOCKed. The device is always  
UNLOCKed and all parameters can be  
modified.  
l
=
LOCKed. The device is always LOCKed  
and no parameters can be modified  
From 2 to 9999 = This number is a password, to be  
used in run time (see “nn”), to LOCK/  
UNLOCK the device.  
t1  
tn10 =  
tn30 =  
=
Timeout Selection  
10 second timeout  
30 second timeout  
14  
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19/04/2004, 15.07  
 
OPERATING MODE  
shows "Ph.". If no shutdown condition was  
detected, the upper display will show “- - - -”.  
This information is not available if C1 = HI.Lo.  
The information is lost at power down and at  
powerup the device will display the process  
variable.  
1) Remove the instrument from its case.  
2) Set switch V101 (see fig. 13) to the closed  
position.  
3) Re-insert the instrument in its case.  
4) Switch on the instrument.  
Normal Display Mode  
On powerup the device starts in the "Normal Display  
Mode."  
NOTE: When the shutdown condition was  
generated by an input fault condition, the upper  
display will indicate “m.Err”  
By pressing the  
thedisplayedinformation;therefore,oneofthefollowing  
display modes can be selected:  
or key, it is possible to change  
6) The upper display shows the minimum mesured  
value detected during the last shutdown  
condition while the lower display shows "PL.” If  
no shutdown condition was detected, the upper  
display will show “- - - -”. This information is  
not available if C1 = Hi. The information is lost  
at power down and at powerup the device will  
display the process variable.  
1) The upper display shows the measured value  
while the lower display shows the "Pu" (Process  
variable).  
If this display was active at power down, it will  
be active at powerup.  
2) The upper display shows the limiter threshold  
while the lower display shows "Su." If this  
display was active at power down, it will be  
active at powerup.  
NOTE: When the shutdown condition was  
generated by an input fault condition, the upper  
display will indicate “m.Err”  
3) The upper display shows the second limiter  
threshold while the lower display shows "S1."  
This information is available only if C1 = Hi.Lo.  
If this display was active at power down, it will  
be active at powerup.  
4) The upper display shows the total time (hh.mm)  
of the last shutdown condition while the lower  
displays shows “t.” If no shutdown condition  
was detected, the upper display will show “- - -  
-”. The information is lost at power down and  
at powerup the device will display the process  
variable.  
If, at power off, the device was in shutdown  
condition and shutdown memoy function is  
selected (C4 = 0), and/or it was programmed for  
manual reset at startup (C3 = 1), then at the next  
power up the lower display will be flashing.  
5) The upper display shows the maximum  
measured value detected during the last  
shutdown condition while the lower display  
15  
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19/04/2004, 15.07  
 
Indicators  
RESET“ =Indicates control output 1 status as  
follows:  
RESET” = Press and hold for 1 second to rearm  
(reset) the limiter.  
+ FUNC or + FUNC  
a) When C2 parameter has been  
configured equal to 0,  
LED ON when Output 1 is OFF  
LED OFF when Output 1 is ON  
b) When C2 parameter has been  
configured equal to 1,  
Increases/decreases values at a higher  
rate when modifying parameters.  
+ RESET or + RESET  
Jumps to the Maximum or Minimum  
parameter value when modifying  
parameters.  
LED flashes when Output 1 is OFF  
LED ON when Output 1 is OFF and  
acknowledged  
Operative Parameter Display Mode  
The "FUNC" key initiates the Operative Parameter  
Display Mode when pressed for less than 10  
seconds in the "Normal Display Mode."  
LED OFF when Output is ON  
“ALM= Indicates alarm status as follows:  
- Flashes when alarm is ON  
- ON when alarm has been resetted but  
the alarm condition is still present.  
- OFF when alarm is OFF  
Thelowerdisplayshowstheparametercodewhilethe  
upper display shows the parameter value or status.  
The value of the selected parameter can be modified  
with the and keys.  
REM= Indicates the remote status of the  
instrument.  
- Flashes when instrument is in remote  
mode.  
Press the "FUNC" key again to store the new value  
and advance to the next parameter.  
- OFF when instrument is in local mode.  
If no keys are pressed within the timeout period  
(see t1), the instrument will automatically return to  
the "Normal Display Mode" in the previous display  
and any modification of the last displayed  
parameter will be lost.  
Key Functions in Normal Display Mode  
FUNC” = By pressing it, the display changes from  
“Normal Display Mode” to “Operative  
Parameter Display Mode.”  
= Pressing it for more than ten seconds  
initiates the Lamp Test. During the Lamp  
Test the device function normally while all  
display segments and LED's are lit with a  
50% duty cycle. No timeout is applied to  
a lamp test.  
All parameters (except a6) can be modified only  
when the device is UNLOCKed.  
The LOCK/UNLOCK status can be selected in  
configuration using “n1” parameter or during the  
operating mode with the “nn” parameter (pass-  
word).  
Press the "FUNC" key again to end the  
Lamp Test.  
"
" or “ " = By pressing these keys it is possible to  
change the displayed information. See  
“Normal Display Mode” on previous  
page.  
16  
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19/04/2004, 15.07  
 
To switch from LOCKED to UNLOCKED, assign to  
the “nn” parameter a value equal to the “n1”  
parameter setting. To switch from UNLOCKED to  
LOCKED, assign to the “nn” parameter any number  
other than the n1 parameter setting.  
nn  
                                                                                                                                                                                                                                            
S
                                                                                                                                                                                                                                            
                                                                                                                                                                                                                                               
o
                                                                                                                                                                                                                                               
                                                                                                                                                                                                                                                 
f
                                                                                                                                                                                                                                                 
                                                                                                                                                                                                                                                  
t
                                                                                                                                                                                                                                                  
                                                                                                                                                                                                                                                   
w
                                                                                                                                                                                                                                                    
                                                                                                                                                                                                                                                      
a
                                                                                                                                                                                                                                                      
                                                                                                                                                                                                                                                         
r
                                                                                                                                                                                                                                                         
                                                                                                                                                                                                                                                          
e
                                                                                                                                                                                                                                                          
                                                                                                                                                                                                                                                               
K
                                                                                                                                                                                                                                                               
                                                                                                                                                                                                                                                                  
e
                                                                                                                                                                                                                                                                  
                                                                                                                                                                                                                                                                    
y
                                                                                                                                                                                                                                                                    
(Skipped if n1 = 0 or 1)  
ON = the device is LOCKED.  
OFF = the device is UNLOCKED.  
When it is desired to switch from LOCK to  
UNLOCK condition, set a value equal to  
“n1” parameter.  
When the device is in remote mode (the serial link  
controls the device) no parameters can be modified.  
When it is desired to switch from  
UNLOCK to LOCK condition, set a value  
different from “n1” parameter.  
Key Functions in  
Operative Parameter Display Mode  
Su  
S1  
HS  
AL  
Limiter Threshold  
Range: Span limits (From "S1" to full scale  
value when C1 = Hi.Lo)  
FUNC  
=
Pressing the “FUNC” key, the  
instrument stores the new setting  
(if changed) and goes to the next  
parameter.  
Second Limiter Threshold  
(Available when C1 = Hi.Lo)  
Range: From initial scale value to "Su"  
or  
=
=
Changes the setting of the  
selected parameter.  
Limiter Hysteresis  
Range: From 0.1% to 10.0% of the  
input span or 1 LSD  
RESET  
Press and hold for more than 1  
second for limiter rearmament.  
Alarm Threshold (optional)  
(Available only if the option is fitted and  
P1= AL.P, AL.b or AL.d.)  
OPERATING PARAMETERS  
Some of the following parameters may not appear,  
depending on the configuration.  
Ranges:  
span limits for process alarm (P1 = AL.P)  
from 0 to 500 for band alarm (P1 = AL.b)  
from -500 to 500 for deviation alarm  
(P1 = AL.d)  
Lower Description  
Display  
a
Manual reset of the alarm.  
6
(Available only if P1 = AL.p, AL.b or AL.d)  
ON = Starts the manual reset of the alarm  
OFF = Do not start the alarm reset.  
Select ON and press the FUNC key in order  
to reset the alarm.  
HA  
Alarm Hysteresis (optional)  
(Available only if the option is fitted and  
P1 = AL.P, AL.b or AL.d)  
Range: From 0.1% to 10.0% of the input  
span or 1 LSD.  
After a manual reset of the alarm the  
instrument returns in Normal Display Mode.  
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19/04/2004, 15.07  
 
Limiter function  
The length of the shutdown condition and max/min  
measured values are stored in memory and available  
for viewing (see “Normal Display Mode”) until the next  
shutdown condition occurs.  
The relay of the output 1 operates in fail-safe mode  
(relay de-energized during shutdown condition) and  
latching mode.  
These informations are lost at power down.  
The OUT 1 turns OFF when:  
-
-
-
The instrument is configured as a high limiter  
(C1 = Hi) and the measured value is greater than  
limiter threshold [“Su” parameter (see Operative  
parameters”)]or  
The instrument is configured as a low limiter (C1  
= LO) and the measured value is less than  
limiter threshold [“Su” parameter (see Operative  
parameters”)]or  
The instrument is configured as a high/low  
limiter (C1 = HiLO) and the measured value is  
greater than “Su” parameter (see Operative  
parameters”) or less than “S1” parameter (see  
Operative parameters”).  
During a shutdown condition the max/min measured  
valuesarecontinuouslyupdatedandcanbemonitored.  
Example 1 - C1 = Hi and C2 = O  
The Out 1 remains OFF until the condition which  
generated the shutdown, no longer exists and the  
acknowledge action has been performed.  
The upper display flashes during a shutdown and  
returns to a steady display when the shutdown  
condition no longer exists.  
Example 2 - C1 = Hi and C2 = 1  
When the OUT 1 is OFF the RESET LED is ON [if the  
selectedrearmingmodeisequalto0(C2=0)]orflashes  
[if the selected rearming mode is equal to 1 (C2 = 1)].  
When the selected rearming mode is equal to 1  
(C2 = 1) the RESET LED is steady ON when OUT 1  
is OFF and acknowledged.  
The shutdown condition can be stored in permanent  
memory(seeC4).  
Acknowledgment can be performed by pressing the  
RESET key, by momentarily closing the external dry  
contact or by a command from the serial link.  
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Alarm functions  
                                                                                                                                                                                                                             
S
                                                                                                                                                                                                                              
                                                                                                                                                                                                                                
e
                                                                                                                                                                                                                                
                                                                                                                                                                                                                                  
r
                                                                                                                                                                                                                                  
                                                                                                                                                                                                                                    
i
                                                                                                                                                                                                                                    
                                                                                                                                                                                                                                     
a
                                                                                                                                                                                                                                     
                                                                                                                                                                                                                                       
l
                                                                                                                                                                                                                                       
                                                                                                                                                                                                                                          
L
                                                                                                                                                                                                                                           
                                                                                                                                                                                                                                             
I
                                                                                                                                                                                                                                             
                                                                                                                                                                                                                                              
n
                                                                                                                                                                                                                                              
                                                                                                                                                                                                                                                
k
                                                                                                                                                                                                                                                
                                                                                                                                                                                                                                                     
(o  
                                                                                                                                                                                                                                                     
                                                                                                                                                                                                                                                      
                                                                                                                                                                                                                                                      
                                                                                                                                                                                                                                                        
p
                                                                                                                                                                                                                                                         
                                                                                                                                                                                                                                                           
t
                                                                                                                                                                                                                                                           
                                                                                                                                                                                                                                                            
i
                                                                                                                                                                                                                                                            
                                                                                                                                                                                                                                                             
o
                                                                                                                                                                                                                                                             
                                                                                                                                                                                                                                                               
n
                                                                                                                                                                                                                                                               
                                                                                                                                                                                                                                                                  
a
                                                                                                                                                                                                                                                                  
                                                                                                                                                                                                                                                                    
l
                                                                                                                                                                                                                                                                    
                                                                                                                                                                                                                                                                     
)
                                                                                                                                                                                                                                                                     
(Skipped if option is not available or P1 = none)  
The alarm can be programmed as:  
- process alarm  
The device can be connected to a host computer via  
serial link.  
- band alarm  
- deviation alarm.  
ThehostcanputthedeviceinLOCAL(parametersare  
controlled via keyboard) or in REMOTE (functions and  
parameters are controlled via serial link).  
REMOTE is shown by the decimal point to the left  
of "REM" which is on the right side of the numerical  
display.  
Band and deviation alarms are referred to the  
limiter threshold and are possible only if an high  
limiter or a low limiter function has been selected.  
For all the alarm types, it is possible to select  
automatic or manual reset or the “Silence”  
function.  
The "Silence" function is a typical function of the  
alarm annunciators (see ISA “Alarm annunciator  
operational sequence”) and it is usually applied to  
audible alarm indications (horn). This function  
allows the manual reset of the alarm even if the  
alarm condition is still in progress.  
Via serial link it is possible to read and/or to modify all  
the operative and configuration parameters.  
The following conditions must apply to implement this  
function:  
1) Configure parameters L1 through L4 with the  
front keyboard.  
2) The device must be in the Operating mode.  
It is also possible to assign to the alarm a stand by  
(mask) function.  
For other details require ENG 816-E document.  
If the alarm is programmed as band or deviation  
alarm, this function masks the alarm condition after  
a safety threshold change or at the instrument  
start-up until process variable reaches the alarm  
threshold plus or minus hysteresis. If the alarm is  
programmed as a process alarm, this function  
masks the alarm condition at instrument start-up  
until process variable reaches the alarm threshold  
plus or minus hysteresis.  
Graphic example of the alarm behaviour are shown  
at pages 12 and 13.  
19  
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ERROR MESSAGES  
                                                                                                                                                                                                                             
E
                                                                                                                                                                                                                              
                                                                                                                                                                                                                                
r
                                                                                                                                                                                                                                
                                                                                                                                                                                                                                 
r
                                                                                                                                                                                                                                 
                                                                                                                                                                                                                                   
o
                                                                                                                                                                                                                                   
                                                                                                                                                                                                                                     
r
                                                                                                                                                                                                                                     
                                                                                                                                                                                                                                         
M
                                                                                                                                                                                                                                         
                                                                                                                                                                                                                                            
e
                                                                                                                                                                                                                                            
                                                                                                                                                                                                                                              
s
                                                                                                                                                                                                                                              
                                                                                                                                                                                                                                                
s
                                                                                                                                                                                                                                                
                                                                                                                                                                                                                                                  
a
                                                                                                                                                                                                                                                  
                                                                                                                                                                                                                                                    
g
                                                                                                                                                                                                                                                    
                                                                                                                                                                                                                                                      
e
                                                                                                                                                                                                                                                       
                                                                                                                                                                                                                                                         
s
                                                                                                                                                                                                                                                         
On power up, the instrument performs a self-  
diagnostic test. When an error is detected, the  
lower display shows an "Er" indication while the  
upper display shows the code of the detected  
error.  
Overrange, Underrange and  
Sensor Break Indications  
This device detects input fault conditions.  
(OVERRANGE,UNDERRANGEORSENSOR  
BREAK). When the process variable exceeds the  
span limits an OVERRANGE condition will appear  
as:  
Error List  
100  
150  
200  
XXX  
301  
307  
400  
500  
502  
510  
Error in EEPROM writing  
Short circuit on CPU's outputs  
Error on "protect register" in EEPROM  
Configuration parameter error.  
Error on calibration of selected input.  
rj input calibration error.  
Error on operative parameters.  
Error on autozero measurement.  
Error on reference junction measurement.  
Error during calibration procedure.  
An UNDERRANGE condition will appear as:  
A sensor break is signalled as "OPEn”. On the mA/  
V input, a sensor break can be detected only  
when the range selected has a zero elevation (4/  
20 mA, 12/60 mV, 1/5 V or 2/10 V.)  
Dealing with Error Messages  
1) When a configuration parameter error is  
detected, repeat the configuration procedure of  
that specific parameter.  
2) If an error 400 is detected, press and hold the  
key and press the key and load the default  
parameters; then repeat the control parameter  
setup.  
On the RTD input "shrt" is signalled when input  
resistance is less than 15 (short circuit sensor  
detection).  
3) For all other errors, contact your  
Service Representative.  
This device detects reference junction errors or  
errors on the internal autozero measurement.  
When a fault is detected the output goes OFF and  
the alarm assumes an upscale/downscale reading  
in accordance with r7.  
20  
LHL-1-NEUTRO.pmd  
20  
19/04/2004, 15.07  
 
GENERAL SPECIFICATIONS  
                                                                                                                                                                                                                             
D/  
                                                                                                                                                                                                                              
                                                                                                                                                                                                                                
                                                                                                                                                                                                                                
                                                                                                                                                                                                                                 
A
                                                                                                                                                                                                                                 
                                                                                                                                                                                                                                     
c
                                                                                                                                                                                                                                      
                                                                                                                                                                                                                                       
o
                                                                                                                                                                                                                                       
                                                                                                                                                                                                                                         
nv  
                                                                                                                                                                                                                                          
                                                                                                                                                                                                                                           
                                                                                                                                                                                                                                           
                                                                                                                                                                                                                                             
ersi : dual slope integration.  
                                                                                                                                                                                                                                             
                                                                                                                                                                                                                                               
                                                                                                                                                                                                                                               
                                                                                                                                                                                                                                                
                                                                                                                                                                                                                                                
                                                                                                                                                                                                                                                  
                                                                                                                                                                                                                                                  
o
                                                                                                                                                                                                                                                   
n
                                                                                                                                                                                                                                                     
Case: Polycarbonate grey case  
Sampling time :  
Self extinguishing degree: V-0 according to UL94.  
Front protection - designed and tested for IP 65 (*)  
and NEMA 4X (*) for indoor locations (when panel  
gasket is installed).  
(*) Test were performed in accordance with IEC  
529, CEI 70-1 and NEMA 250-1991 STD.  
Installation: panel mounting.  
Rear terminal board: 15 screw terminals (screw  
M3, for cables from φ 0.25 to φ 2.5 mm2 or from  
AWG 22 to AWG 14 ), connection diagram and  
safety rear cover.  
Dimensions: 48 x 48 mm (according to DIN  
43700); depth  
- for linear inputs = 250 ms.  
- for TC or RTD inputs = 500 ms.  
Display updating time: 500 ms.  
Resolution: 30000 counts.  
Temperature Drift (CJ excluded)  
-
Less than 200 ppm/°C of full span for mV and  
TC ranges 0, 1, 3, 4, 8, 13, 23, 24, 26, 27, 31,  
36 (CJ excluded).  
-
-
-
-
Less than 300 ppm/°C of full span for mA, V and  
TC ranges 10, 11, 12, 33, 34, 35 (CJ excluded)  
Less than 400 ppm/°C of full span for RTD and  
TC range 9, 32 (CJ excluded).  
Less than 500 ppm/°C of full span for TC ranges  
2, 5, 6, 25, 28, 29 (CJ excluded).  
- 122 mm for models with RS-485.  
- 105 mm for models without RS-485  
Weight: 250 g. max. (8.75 oz.).  
Less than 600 ppm/°C of full span for TC ranges  
7, 30.  
NOTE: Precision and drift guaranteed (for  
T>300°C/570°F).  
Accuracy: + 0.2% f.s.v. @ 25 °C (77 °F) and  
nominal power supply voltage.  
Operative temperature: from 0 to +50 °C (32 to  
122 °F).  
Storage temperature: from -20 to +70 °C (-4 to  
158 °F).  
Power supply : (switching mode) from 100 to  
240 V AC. 50/60 Hz (+10 % to -15 % of the  
nominal value) or  
24 V DC/AC (+10 % of the nominal value).  
Power consumption: 8 VA.  
Insulation resistance: > 100 Maccording to  
IEC 1010-1.  
Isolation voltage: 1500 V r.m.s. according to  
IEC 1010-1.  
Humidity: from 20% to 85 % RH not condensing.  
Common mode rejection ratio:  
120 dB @ 50/60 Hz.  
Normal mode rejection ratio: 60 dB @ 50/60 Hz.  
Electromagnetic compatibility and safety  
requirements: This instrument is marked CE.  
Therefore, it is conforming to council directives  
89/336/EEC (reference harmonized standard  
EN 50081-2 and EN 50082-2) and to council  
directives 73/23/EEC and 93/68/EEC (reference  
harmonized standard EN 61010-1).  
Installation category: II  
21  
LHL-1-NEUTRO.pmd  
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19/04/2004, 15.07  
 
INPUTS  
                                                                                                                                                                                                                             
B
                                                                                                                                                                                                                              
                                                                                                                                                                                                                                
)
                                                                                                                                                                                                                                
                                                                                                                                                                                                                                    
R
                                                                                                                                                                                                                                    
                                                                                                                                                                                                                                       
T
                                                                                                                                                                                                                                       
                                                                                                                                                                                                                                         
D
                                                                                                                                                                                                                                         
(Resistance  
                                                                                                                                                                                                                                              
                                                                                                                                                                                                                                              
                                                                                                                                                                                                                                                                 
Temperature  
                                                                                                                                                                                                                                                                 
                                                                                                                                                                                                                                                                                      
Detector)  
                                                                                                                                                                                                                                                                                      
Input: for RTD Pt 100 , 3 wire connection.  
Input circuit: current injection.  
A) THERMOCOUPLE  
°C/°F selection: via front pushbuttons or serial link.  
Line resistance: automatic compensation up to 20  
/wire with no measurable error.  
Type : J, K, T, E, N, S, R, B, L, U, G(W), D(W3),  
C(W5), Platinel II, °C/°F selectable.  
External resistance: 100 max, maximum error  
0,1% of span.  
Calibration: according to DIN 43760  
Burn out : The instrument detect the open condition  
of one or more wires. It is able to detect also the  
short circuit of the sensor.  
Burn out: It is shown as an overrange condition  
(standard). It is possible to obtain an underrange  
indication by cut and short.  
Cold junction: automatic compensation from 0 to  
50 °C.  
STANDARD RANGES TABLE  
Cold junction accuracy : 0.1 °C/°C  
Input impedance: > 1 MΩ  
Calibration : according to IEC 584-1 and DIN  
43710 - 1977.  
Input  
Ranges  
type  
STANDARD RANGES TABLE  
RTD Pt 100 Ω  
14  
37  
- 200 / 850  
- 330 / 1560  
°C  
°F  
DIN 43760  
T/C  
Ranges  
type  
J
0
1
2
3
4
5
6
7
8
9
-100 / 1000 °C 23 -150 / 1830 °F  
-100 / 1370 °C 24 -150 / 2500 °F  
-200 / 400 °C 25 -330 / 750 °F  
-100 / 800 °C 26 -150 / 1470 °F  
-100 / 1400 °C 27 -150 / 2550 °F  
-50 / 1760 °C 28 -60 / 3200 °F  
-50 / 1760 °C 29 -60 / 3200 °F  
K
T
E
N
S
R
B
L
C) LINEAR INPUTS  
Read-out: keyboard programmable between  
-1999 and +9999.  
Decimal point: programmable in any position  
Burn out: the instrument shows the burn out  
condition as an underrange condition for 4-20  
mA, 1-5 V and 2-10 V input types.  
0 / 1820 °C 30  
32 / 3300 °F  
-100 / 900 °C 31 -150 / 1650 °F  
-200 / 600 °C 32 -330 / 1110 °F  
U
It shows the burn out condition as an underrange  
or an overrange condition (selectable by  
soldering jumper) for 0-60 mV and 12-60 mV  
input types. No indication are available for 0-20  
mA, 0-5 V and 0-10 V input types.  
G(W) 10  
D(W3) 11  
C(W5) 12  
0 / 2300 °C 33  
0 / 2300 °C 34  
0 / 2300 °C 35  
0 / 4170 °F  
0 / 4170 °F  
0 / 4170 °F  
P.(*) 13 -100 / 1400 °C 36 -150 / 2550 °F  
(*) P. equal to Platinel II  
22  
LHL-1-NEUTRO.pmd  
22  
19/04/2004, 15.07  
 
STANDARD RANGES TABLE  
Input type impedance  
0 - 60 mV  
                                                                                                                                                                                                                             
O
                                                                                                                                                                                                                              
                                                                                                                                                                                                                                
U
                                                                                                                                                                                                                                
                                                                                                                                                                                                                                   
T
                                                                                                                                                                                                                                   
                                                                                                                                                                                                                                     
P
                                                                                                                                                                                                                                     
                                                                                                                                                                                                                                        
U
                                                                                                                                                                                                                                        
                                                                                                                                                                                                                                          
T
                                                                                                                                                                                                                                          
                                                                                                                                                                                                                                            
S
                                                                                                                                                                                                                                            
Accuracy  
Output updating time :  
- 250 ms when a linear input is selected  
- 500 ms when a TC or RTD input is selected.  
15  
16  
17  
18  
19  
20  
21  
22  
> 1 MΩ  
< 5 Ω  
12 - 60 mV  
0 - 20 mA  
4 - 20 mA  
0 - 5 V  
1 - 5 V  
0 - 10 V  
2 - 10 V  
OUTPUT 1  
Type: relay SPDT contact .  
Contact rated: 3 A at 250 V AC on resistive load.  
Function: Safety limiter output.  
Action: reverse (fail-safe).  
0.2 % + 1 digit  
@ 25°C  
> 400 kΩ  
> 400 kΩ  
(77 °F)  
OUTPUT 2  
Type: relay SPST contact .  
Contact rated: 2 A at 250 V AC on resistive load.  
Function: Alarm output  
D) LOGIC INPUTS  
Action: direct/reverse programmable by front  
keyboard.  
(for models with RS-485 only)  
This instrument is provided of 1 logic input used  
for remote acknowledgement.  
NOTES  
1) Use an external dry contact capable of  
switching 0.5 mA, 5 V DC.  
ALARM  
2) The instrument needs 100 ms to recognize a  
contact status variation.  
3) The logic inputs are NOT isolated by the  
measuring input.  
Action: Direct or reverse acting.  
Alarm functions: configurable as process alarm,  
band alarm or deviation alarm.  
Alarm reset: automatic reset, manual reset or  
"Silence" function is programmable.  
Stand by (mask) alarm: the alarm can be  
configured with or without stand by (mask)  
function.  
Process alarm:  
Operative mode : High or low programmable.  
Threshold : programmable in engineering unit within  
the readout span.  
Hysteresis: programmable from 0.1 % to 10.0 % of  
the readout span.  
23  
LHL-1-NEUTRO.pmd  
23  
19/04/2004, 15.07  
 
Band alarm  
                                                                                                                                                                                                                             
M
                                                                                                                                                                                                                              
                                                                                                                                                                                                                                 
A
                                                                                                                                                                                                                                 
                                                                                                                                                                                                                                   
IN  
                                                                                                                                                                                                                                   
                                                                                                                                                                                                                                    
                                                                                                                                                                                                                                    
                                                                                                                                                                                                                                       
TEN  
                                                                                                                                                                                                                                       
                                                                                                                                                                                                                                         
                                                                                                                                                                                                                                         
                                                                                                                                                                                                                                           
                                                                                                                                                                                                                                           
                                                                                                                                                                                                                                              
A
                                                                                                                                                                                                                                              
                                                                                                                                                                                                                                                
N
                                                                                                                                                                                                                                                 
                                                                                                                                                                                                                                                   
C
                                                                                                                                                                                                                                                   
                                                                                                                                                                                                                                                      
E
                                                                                                                                                                                                                                                      
Operative mode: Inside or outside band  
programmable.  
Threshold: programmable from 0 to 500 units.  
Hysteresis : programmable from 0.1 % to 10.0 % of  
the readout span.  
1) REMOVE POWER FROM THE POWER  
SUPPLY TERMINALS AND FROM RELAY  
OUTPUT TERMINALS  
2) Remove the instrument from case.  
3) Using a vacuum cleaner or a compressed air  
jet (max. 3 kg/cm2) remove all deposit of dust  
and dirt which may be present on the louvers  
and on the internal circuits trying to be careful  
for not damage the electronic components.  
4) To clean external plastic or rubber parts use  
only a cloth moistened with:  
Deviation alarm  
Operative mode : High or low programmable.  
Threshold : programmable from - 500 to +500  
units.  
Hysteresis : programmable from 0.1 % to 10.0 % of  
the readout span.  
- Ethyl Alcohol (pure or denatured) [C2H5OH] or  
- Isopropil Alcohol (pure or denatured)  
[(CH3)2CHOH] or  
- Water (H2O)  
SERIAL COMMUNICATION INTERFACE  
(OPTION)  
Type: insulated RS-485.  
Protocol type: MODBUS or JBUS.  
Baud rate: programmable from 600 to 19200  
BAUD.  
5) Verify that there are no loose terminals.  
6) Before re-inserting the instrument in its case,  
be sure that it is perfectly dry.  
7) re-insert the instrument and turn it ON.  
Byte format: 8 bit.  
Parity: even, odd or none programmable.  
Stop bit: one.  
Address: from 1 to 255.  
Output voltage levels: according to EIA  
standard.  
24  
LHL-1-NEUTRO.pmd  
24  
19/04/2004, 15.07  
 
procedure is complete and the instrument reverts  
to the “Normal Display Mode.” The following is a  
list of the default operating parameters loaded  
during the procedure:  
APPENDIX A  
DEFAULT PARAMETERS  
DEFAULT PARAMETERS  
Default Operating Parameters List  
Loading Default Operating Parameters  
The control parameters can be loaded with  
predetermined default values. These are the  
settings loaded into the instrument prior to  
shipment from the factory. To load the default  
values proceed as follows:  
Parameter  
Default Value  
Alarm Acknowledge OFF  
Software Key  
Unlock  
Setpoint Threshold  
Low range value (if low limit)  
High range value (if high or  
high/low limit)  
Setpoint1 Threshold Low range value  
Setpoint Threshold  
a) Press and hold the key and press the  
key; the displays will show:  
Hysteresis  
0.1%  
Alarm Threshold  
Low range (if process alarm)  
100 (if deviation or band  
alarm)  
Alarm Hysteresis  
0.1%  
b) Press either the or  
show:  
key; the display will  
c) Press the "FUNC" key; the display will show:  
This indicates that the loading procedure has  
been initiated. After about 3 seconds the loading  
Appendix A.1  
LHL-A-NEUTRO.pmd  
1
19/04/2004, 15.28  
 
Loading Default Configuration Parameters  
The configuration parameters can be loaded with  
predetermined default values. These are the  
settings loaded into the instrument prior to  
shipment from the factory. To load the default  
values proceed as follows:  
f) Press the FUNC key; the display will show:  
a) Internal switch V101 must be open.  
b) The upper display will show:  
This indicates that the loading procedure has  
been initiated. After about 3 seconds the  
procedure is complete and the instrument reverts  
to the “COnF” display. The following is a list of the  
default configuration parameters loaded during  
the procedure:  
c) Press the  
the firmware version.  
key; the lower display will show  
d) Still holding the key, press the key; the  
display will show:  
e) Press the  
key to select Table 1 (Euro-  
pean) or Table 2 (American) default  
parameters; the display will show:  
Appendix A.2  
LHL-A-NEUTRO.pmd  
2
19/04/2004, 15.28  
 
PARA.  
Table 1  
Table 2  
European  
American  
L1  
L2  
L3  
L4  
r1  
nbUS  
nbUS  
1
1
19200  
19200  
8E  
8E  
Type J  
Type J  
(-100 to 1000 °C)  
(-150 to 1830 °F)  
r2  
----.  
----.  
r3  
-100  
1000  
0
-150  
1830  
0
r4  
r5  
r6  
1 second  
uP  
1 second  
uP  
r7  
c1  
c2  
c3  
c4  
c5  
P1  
P2  
P3  
P4  
PF  
n1  
t1  
Hi  
Hi  
1
0
Auto  
0
Auto  
0
1 second  
nonE  
H.A.  
rEV  
1 second  
nonE  
H.A.Ac  
rEV  
OFF  
1 second  
0
OFF  
1 second  
0
10 seconds  
30 seconds  
Appendix A.3  
LHL-A-NEUTRO.pmd  
3
19/04/2004, 15.28  
 
APPENDIX B  
THERMOCOUPLE COMPENSATING CABLE COLOR CODES.  
Thermocouple  
Material  
T Copper Constantan  
British  
BS 1843  
White  
Blue  
Blue  
Yellow  
Blue  
Black  
Brown  
Blue  
Red  
White  
Blue  
Green  
White  
Blue  
Green  
Brown  
Blue  
American  
ANSI MC 96.1 DIN 43710  
German  
French  
NFE 18-001  
Yellow  
Blue  
Blue  
+
-
+
-
Blue  
Red  
Blue  
White  
Red  
Black  
Yellow  
Red  
Yellow  
Black  
Red  
Green  
Black  
Red  
Green  
Violet  
Red  
+
-
Red  
+
-
Brown  
Brown  
Red  
Blue  
Blue  
Red  
Green  
Green  
Red  
White  
White  
Red  
J/L Iron Constantan  
+
-
+
-
+
-
+
-
Yellow  
Black  
Black  
Yellow  
Purple  
Yellow  
White  
Green  
Green  
White  
Green  
Green  
K Nickel Chromium  
Nickel Aluminum  
+
-
+
-
+
-
+
-
R Platinum/Platinum  
13% Rhodium  
+
-
+
-
+
-
+
-
S Platinum/Platinum  
10% Rhodium  
+
-
+
-
+
-
+
-
White  
White  
E Chromel  
Constantan  
+
-
+
-
Brown  
Violet  
Grey  
Red  
Grey  
B Platinum 30% Rh  
Platinum 6% Rh  
+
-
N Nicrosil / Nisil  
LHL-B-NEUTRO.pmd  
1
19/04/2004, 15.30  
 
RETURN REQUESTS / INQUIRIES  
Direct all warranty and repair requests/inquiries to the OMEGA Customer Service Department. BEFORE RETURNING ANY  
PRODUCT(S) TO OMEGA, PURCHASER MUST OBTAIN AN AUTHORIZED RETURN (AR) NUMBER FROM OMEGA’S CUSTOMER  
SERVICE DEPARTMENT (IN ORDER TO AVOID PROCESSING DELAYS). The assigned AR number should then be marked on the  
outside of the return package and on any correspondence. The purchaser is responsible for shipping charges, freight,  
insurance and proper packaging to prevent breakage in transit.  
FOR NON-WARRANTY REPAIRS, consult OMEGA for current  
repair charges. Have the following information available  
BEFORE contacting OMEGA:  
1. Purchase Order number to cover the COST of the repair,  
2. Model and serial number of the product, and  
3.Repair instructions and/or specific problems relative to the  
FOR WARRANTY RETURNS, please have the following  
information available BEFORE contacting OMEGA:  
1.Purchase Order number under which the product was  
PURCHASED,  
2.Model and serial number of the product under warranty,  
and  
3.Repair instructions and/or specific problems relative to the  
product.  
product.  
OMEGA’s policy is to make running changes, not model changes, whenever an improvement is possible. This affords our  
customers the latest in technology and engineering.OMEGA is a registered trademark of OMEGA ENGINEERING, INC.  
© Copyright 2003 OMEGA ENGINEERING, INC. All rights reserved. This document may not be copied, photocopied, reproduced,  
translated, or reduced to any electronic medium or machine-readable form, in whole or in part, without the prior written  
consent of OMEGA ENGINEERING, INC.  
WARRANTY/DISCLAIMER  
OMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and workmanship for a period  
®
of 37 months from date of purchase. The OMEGA Warranty adds an additional one (1) month grace period to the normal  
three (3) years product warranty to cover handling and shipping time. This ensures that OMEGA’s customers receive maximum  
coverage on each product.  
If the unit malfunctions, it must be returned to the factory for evaluation. OMEGA’s Customer Service Department will issue an  
Authorized Return (AR) number immediately upon phone or written request. Upon examination by OMEGA, if the unit is found  
to be defective, it will be repaired or replaced at no charge. OMEGA’s WARRANTY does not apply to defects resulting from any  
action of the purchaser, including but not limited to mishandling, improper interfacing, operation outside of design limits,  
improper repair, or unauthorized modification. This WARRANTY is VOID if the unit shows evidence of having been tampered  
with or shows evidence of having been damaged as a result of excessive corrosion; or current, heat, moisture or vibration;  
improper specification; misapplication; or misuse or other operating conditions outside of OMEGA’s control. Components which  
wear are not warranted, including but not limited to contact points, fuses, and triacs.  
OMEGA is pleased to offer suggestions on the use of its various products. However, OMEGA neither assumes responsibility for any  
omissions or errors nor assumes liability for any damages that result from the use of its products in accordance with information  
provided by OMEGA, either verbal or written. OMEGA warrants only that the parts manufactured by it will be as specified and  
free of defects. OMEGA MAKES NO OTHER WARRANTIES OR REPRESENTATIONS OF ANY KIND WHATSOEVER, EXPRESS OR  
IMPLIED, EXCEPT THAT OF TITLE, AND ALL IMPLIED WARRANTIES INCLUDING ANY WARRANTY OF MERCHANTABILITY AND  
FITNESS FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. LIMITATION OF LIABILITY: The remedies of purchaser set forth  
herein are exclusive, and the total liability of OMEGA with respect to this order, whether based on contract, warranty,  
negligence, indemnification, strict liability or otherwise, shall not exceed the purchase price of the component upon which  
liability is based. In no event shall OMEGA be liable for consequential, incidental or special damages.  
CONDITIONS: Equipment sold by OMEGA is not intended to be used, nor shall it be used: (1) as a “Basic Component” under  
10 CFR 21 (NRC), used in or with any nuclear installation or activity; or (2) in medical applications or used on humans. Should  
any Product(s) be used in or with any nuclear installation or activity, medical application, used on humans, or misused in any  
way, OMEGA assumes no responsibility as set forth in our basic WARRANTY/ DISCLAIMER language, and, additionally,  
purchaser will indemnify OMEGA and hold OMEGA harmless from any liability or damage whatsoever arising out of the use  
of the Product(s) in such a manner.  
CN3271-add2.pmd  
3
19/08/2004, 16.36  
 
Where Do I Find Everything I Need for Process Measurement  
and Control? OMEGA…Of Course!  
TEMPERATURE  
DATA ACQUISITION  
Thermocouple, RTD  
Panels & Assemblies  
&
Thermistor Probes, Connectors,  
Data Acquisition  
&
Engineering Software  
Communications-Based Acquisition Systems  
Plug-in Cards for Apple, IBM & Compatibles  
Datalogging Systems  
Wire: Thermocouple, RTD & Thermistor  
Calibrators & Ice Point References  
Recorders, Controllers & Process Monitors  
Infrared Pyrometers  
Recorders, Printers & Plotters  
HEATERS  
PRESSURE, STRAIN AND FORCE  
Heating Cable  
Transducers  
&
Strain Gages  
Cartridge & Strip Heaters  
Load Cells & Pressure Gages  
Displacement Transducers  
Instrumentation & Accessories  
Immersion  
Flexible Heaters  
Laboratory Heaters  
&
Band Heaters  
ENVIRONMENTAL MONITORING  
AND CONTROL  
FLOW/LEVEL  
Rotameters, Gas Mass Flowmeters & Flow Computers  
Air Velocity Indicators  
Metering & Control Instrumentation  
Refractometers  
Turbine/Paddlewheel Systems  
Totalizers & Batch Controllers  
Pumps  
Air, Soil & Water Monitors  
Industrial Water Wastewater Treatment  
pH, Conductivity & Dissolved Oxygen Instruments  
&
Tubing  
&
pH/CONDUCTIVITY  
pH Electrodes, Testers & Accessories  
Benchtop/Laboratory Meters  
Controllers, Calibrators, Simulators & Pumps  
Industrial pH  
&
Conductivity Equipment  
M4084  
CN3271-add2.pmd  
4
19/08/2004, 16.36  
 

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