Rockwell Automation T3431-CA ICS Regent Thermo Couple Input Assembly - Manual (Page 26)

Thermocouple Input Assembly (T3431)
2 6
Industrial Control Services
Thermocouple Accuracy
Maximum error (0 ° to 60 ° C).
Add ±0.5 LSB resolution error to
the following:
Type J, Full range:
Type K
< -100 ° C:
> -100 ° C:
Type S
< 540 ° C:
> 540 ° C:
Type T
< 0 ° C:
> 0 ° C:
±1.6
° C (3.0 ° F)
±4.2
° C (7.6 ° F)
±2.4 ° C (4.3 ° F)
±13
° C (24 ° F)
±7 ° C (12.5 ° F)
±4.8
° C (8.7 ° F)
±2.1 ° C (3.8 ° F)
Wire Resistance Effects
Type J, Full range:
Type K
< -100 ° C:
> -100 ° C:
Type S
< 540 ° C:
> 540 ° C:
Type T
< 0 ° C:
> 0 ° C:
-0.0020
° C/ohm (.0036 ° F)
-0.0066
° C/ohm (0.0120 ° F)
-0.0033 ° C/ohm (0.0060 ° F)
-0.0200
° C/ohm (0.0360 ° F)
-0.0100 ° C/ohm (0.0180 ° F)
-0.0066
° C/ohm (0.0120 ° F)
-0.0025 ° C/ohm (0.0045 ° F)
Adjacent Channel Effects
Channel n = top of range
channel; n-1 = bottom of range
Type J:
Type K:
Type S:
Type T:
-1.0
° C (1.7 ° F)
-1.5 ° C (2.7 ° F)
-4.0 ° C (7.2 ° F)
-0.8 ° C (1.5 ° F)
Channel n = bottom of range; n-1
= open circuit
Type J:
Type K:
Type S:
Type T:
-3.0
° C (5.4 ° F)
-4.0 ° C (7.2 ° F)
-30 ° C (54 ° F)
-4.5 ° C (8.1 ° F)