Cold junction compensation, Trusted, Temperature fta t8840 – Rockwell Automation T8840 Trusted Temperature FTA User Manual
Page 13
Trusted
TM
Temperature FTA T8840
Issue 4 Apr 10
PD-T8840
13
0 to 100 I
Not available
SCM7B36-01
0 to 200 I
Not available
SCM7B36-02
0 to 500 I
Not available
SCM7B36-03
0 to 1K I
Not available
SCM7B36-04
0 to 5K I
Not available
SCM7B36-05
Isolated
Potentiometer
0 to 10K I
Not available
SCM7B36-06
-100 to +760
o
C (-148 to +1400
o
F)
7B37-J-01-1
SCM7B37J-01
0 to +200
o
C (+32 to +392
o
F)
7B37-J-10-1
SCM7B37J-10
0 to +400
o
C (+32 to +752
o
F)
7B37-J-11-1
SCM7B37J-11
0 to +600
o
C (+32 to +1112
o
F)
7B37-J-12-1
SCM7B37J-12
Isolated
Thermocouple
Type J
+300 to +600
o
C (+572 to +1112
o
F)
7B37-J-13-1
SCM7B37J-13
-100 to +1350
o
C (-148 to +2462
o
F)
7B37-K-02-1
SCM7B37K-02
0 to +300
o
C (+32 to +572
o
F)
7B37-K-20-1
SCM7B37K-20
0 to +600
o
C (+32 to +1112
o
F)
7B37-K-21-1
SCM7B37K-21
0 to +1200
o
C (+32 to +2192
o
F)
7B37-K-22-1
SCM7B37K-22
Isolated
Thermocouple
Type K
+600 to +1200
o
C (+1112 to +2192
o
F)
7B37-K-23-1
SCM7B37K-23
0 to +760
o
C (+32 to +1400
o
F)
7B47-J-01-1
SCM7B47J-01
Isolated
Thermocouple
Type J
Linearized
-100 to +300
o
C (-148 to +572
o
F)
7B47-J-02-1
SCM7B47J-02
0 to +1300
o
C (+32 to +2372
o
F)
7B47-K-03-1
SCM7B47K-03
Isolated
Thermocouple
Type K
Linearized
0 to +600
o
C (+32 to +1112
o
F)
7B47-K-04-1
SCM7B47K-04
Additional standard ranges, including custom are available. Information and datasheets can be
supplied upon request.
3.1.4. Cold Junction Compensation
The Trusted
TM
Temperature FTA includes a Cold Junction Compensation (CJC) resistor for each of
the inputs. This makes the FTA compatible with Thermocouple conditioning units. For information in
determining compatible Thermocouple Units the CJC resistor specification is as follows:
GE Thermometrics Part D95G104W
NTC, 100K at 25KC
For further information see the manufacturer’s data sheet.