Allen-Bradley 1746-NT4 Thermocouple/mV Input Module

Allen-Bradley 1746-NT4 is a four-channel thermocouple and millivolt input module for the SLC 500 PLC family. Catalog Number 1746-NT4, Series B, this unit is listed as NO COVER in some listings, indicating the enclosure is not included. It accepts inputs from thermocouples of types J, K, T, E, R, S, B, and N, as well as millivolt signals, with input ranges of ±50 mV or ±100 mV. Each channel feeds into the SLC 500 backplane, converting temperature or low-level voltage signals into digital data stored in the module’s image table for access by the processor. The NT4 supports multiple data formats, including Raw/Proportional, Engineering Units, Engineering Units x 10, and Scaled-for-PID, enabling straightforward integration into temperature control and process monitoring applications. This four-channel module is well suited for temperature sensing, laboratory or industrial process measurements, and any application requiring direct thermocouple or millivolt inputs to an SLC 500 controller.