Product Description

1746NR8 RTD INPUT MODULE 8 CHANNEL SLC-500 OPEN STYLE 55 MA @ 24 VDC 100 MA @ 5 VDC The Allen-Bradley 1746-NR8 is a thermocouple/mV input module designed for the SLC 500 series, offering eight channels for thermocouple or millivolt signal input. This module is ideal for temperature measurement and monitoring in industrial applications, providing high accuracy and flexibility to accommodate a variety of thermocouple types. The 1746-NR8 supports cold junction compensation and offers comprehensive diagnostic features, making it a reliable choice for precise temperature control in process automation systems.

Technical Specifications

• Input Channels: 8 differential inputs
• Input Signal: Thermocouple types (J, K, T, E, R, S, B, N) or millivolt (±50 mV, ±100 mV, ±500 mV)
• Resolution: 16 bits
• Input Impedance: >10 MΩ (thermocouple), >10 kΩ (millivolt)
• Cold Junction Compensation: Internal, with automatic compensation
• Accuracy: ±0.5°C for J, K, T, E thermocouples; varies by thermocouple type and range
• Update Time: 512 ms for all channels
• Power Requirements:
• 105 mA at 5V DC (from backplane)
• 45 mA at 24V DC (from backplane)
• Operating Temperature: 0 to 60 °C (32 to 140 °F)
• Storage Temperature: -40 to 85 °C (-40 to 185 °F)
• Dimensions: 5.5 x 1.4 x 5.0 in (140 x 35 x 127 mm)
• Weight: 0.23 kg (0.5 lbs)
• Certifications: UL, CE, and cULus certified
• Application: Ideal for precise temperature measurement in process control and automation systems using the SLC 500 platform