Input Channels |
6 individually isolated thermocouple inputs, 2 cold-junction compensation (CJC) sensors |
Input Types |
Thermocouple, millivolt |
Supported Thermocouple Types |
B, C, D, E, J, K, L, N, R, S, T |
Input Range |
-12 to 78 mV (1.4 µV/bit), -12 to 30 mV (0.7 µV/bit, high-resolution range) |
Resolution |
16 bits |
Data Format |
Integer (left justified, 2’s complement) or IEEE 32-bit floating point |
Conversion Method |
Sigma-Delta |
Module Scan Time |
25 ms minimum (floating-point, millivolt), 50 ms minimum (floating-point, temperature), 10 ms minimum (integer, millivolt) |
Common Mode Rejection |
>80 dB at 60 Hz |
Normal Mode Rejection |
>60 dB at 60 Hz |
Accuracy |
Varies by thermocouple type, typically ±0.6°C (Type K) at 25°C |
Calibration |
Factory calibrated, user calibration supported |
Power Dissipation |
4.6 W maximum |
Backplane Current Load |
200 mA @ 5.1 V DC, 120 mA @ 24 V DC, 2 mA @ 24 V DC (auxiliary) |
Isolation |
250 V (continuous), reinforced insulation type, inputs to backplane and channel-to-channel |
Cold Junction Compensation |
2 CJC sensors, accuracy ±0.3°C |
Terminal Connections |
20-pin removable terminal block (RTB), 1756-TBNH or 1756-TBSH |
Wire Size |
0.2–2.5 mm² (22–14 AWG), solid or stranded shielded copper wire |
Operating Temperature |
0°C to 60°C (32°F to 140°F) |
Storage Temperature |
-40°C to 85°C (-40°F to 185°F) |
Humidity |
5% to 95% (non-condensing) |
Vibration Tolerance |
2 G @ 10–500 Hz |
Shock Tolerance |
30 G (operating), 50 G (non-operating) |
Dimensions |
145 mm x 35 mm x 140 mm (5.71 in x 1.38 in x 5.51 in) |
Weight |
0.4 kg (0.88 lb) |
Standards Compliance |
CE, UL, CSA (Class I, Div 2, Groups A, B, C, D), FM, RCM |
Certifications |
TUV certified for functional safety (SIL 2) |