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1794-IR8 AB Allen-Bradley PLC FLEX Thermocouple and RTD Input Module 1794 Series Original brand new1794-IR8 AB PLC FLEX Thermocouple and RTD Input Module 1794 Series Original brand new
FLEX Thermocouple and RTD Input Modules
Cat. No.
Number of Inputs
Input Signal Range
Input Resolution
External DC Supply Current, Nom.
Power Dissipation, Max.
Terminal Base Unit
1794-IR8
8 RTD, Strain Gauge
1…433 W
16 bits across 435W
140 mA at 24V DC
3 W at 31.2V DC
1794-TB2, 1794-TB3, 1794-TB3S, 1794-TB3T, 1794-TB3TS, 1794-TBKD
The 1794-IR8 is a temperature-measuring module that accepts 2-, 3-, and 4-wire RTDs. Use the 1794-IR8 in applications where channel fast-update rate is not required. If you need channel fast-update rates, use the 1794-IRT8 module.
1794-IRT8
1794-IRT8K
1794-IRT8XT8 RTD, Thermocouple, Millivolt, Strain Gauge
-40…100 mV DC for thermocouples
0…325 mV for RTDs14 bits
95 mA at 24V DC
3.0 W at 31.2V DC
1794-TB3G, 1794-TB3GS, 1794-TB3GK
The 1794-IRT8 and -IRT8K (conformal coated version) are high-speed, high-accuracy temperature/mV measuring module that accepts thermocouple inputs, 2-, 3-, and 4-wire RTD inputs, and mV source inputs. The 1794-IRT8 also offers wire-off, over-range, and under-range detection. Use cold-junction compensators (1794-CJC2) in thermocouple mode. Two cold-junction compensators are shipped with the these modules.
The 1794-IRT8XT is the extreme environment version, rated for operation at temperatures of -20…70 °C (-4…158 °F).1794-IT8
8 Thermocouple, Millivolt
±76.5 mV
16 bits (2.384 mV typical)
150 mA at 24V DC
3 W at 31.2V DC
1794-TB3T, 1794-TB2, 1794-TB3, 1794-TB3S, 1794-TB3TS
The 1794-IT8 is a temperature/mV measuring module that accepts inputs from a variety of thermocouples and from the mV source in the range of ±76.5 mV. Use cold-junction compensators (1794-CJC2) in thermocouple mode. Two cold-junction compensators are shipped with the 1794-IT8.
Catalog numbers ending in (K) = Conformal Coated, (XT) = extreme environment.
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