Allen-Bradley 1746-NR8 RTD Resistance Input Module

The Allen-Bradley 1746-NR8 RTD Resistance Input Module is a rack-mounted, backplane-connected I/O module for SLC 500 PLC systems that converts RTD resistance into PLC process values for temperature sensing and control. It offers multiple RTD input channels and supports 2-wire, 3-wire, and 4-wire RTD configurations, depending on the model. This SLC 500 I/O module interfaces with the SLC chassis backplane and is designed for installation within a control enclosure, providing industrial-rated operation. Common applications include water and wastewater treatment, HVAC and building automation, chemical processing, material handling, and food and beverage processing lines where accurate RTD-based temperature monitoring is essential.