Allen-Bradley 1756-IRT8I

Allen-Bradley 1756-IRT8I | High-Resolution Analog Input Module for Temperature and Resistance Measurements

Overview

The Allen-Bradley 1756-IRT8I is a versatile analog input module designed for ControlLogix systems. It offers eight individually isolated channels capable of measuring RTD, thermocouple, millivolt, and resistance inputs. This module provides high-resolution data acquisition, making it ideal for precise temperature and resistance monitoring in industrial applications.

Key Features

• Input Channels: 8 individually isolated

• Supported Input Types:

  • RTD (e.g., Pt100, Pt1000, Ni120)

  • Thermocouple (Types B, C, E, J, K, N, R, S, T, TXK/XK, L)

  • Millivolt: -100 to +100 mV DC

  • Resistance: 1–500 Ω, 2–1000 Ω, 4–2000 Ω, 8–4000 Ω

• Resolution: 24-bit signed

• Cold Junction Compensation (CJC): Supports 2 channels

• Data Features:

  • On-board data alarming

  • Scaling to engineering units

  • Real-time channel sampling

• Configuration:

  • Electronic module keying (software configurable)

  • Mechanical RTB keying (user-defined)

• Mounting: Chassis-based installation

• Enclosure Type: Open-style (no enclosure)

• Certifications: UL, CE, CSA, ATEX, IECEx, RCM, CCC 

Technical Specifications

• Catalog Number: 1756-IRT8I

• Input Ranges:

  • Resistance: 1–500 Ω, 2–1000 Ω, 4–2000 Ω, 8–4000 Ω

  • Millivolt: -100 to +100 mV DC

• Operating Temperature: 0°C to 60°C (32°F to 140°F)

• Storage Temperature: -40°C to 85°C (-40°F to 185°F)

• Relative Humidity: 5% to 95% non-condensing

• Vibration: 2 g @ 10–500 Hz

• Shock: 30 g operating, 50 g non-operating

• Removable Terminal Block (RTB) Options:

  • 1756-TBCH (36-pin cage-clamp)

  • 1756-TBS6H (36-pin spring-clamp)

• Dimensions (HxWxD): Refer to datasheet

• Weight: Refer to datasheet 

Applications

• Industrial temperature monitoring

• Process control systems

• Resistance measurement applications

• Integration with RTD and thermocouple sensors

• Precise data acquisition in manufacturing environments

Why Choose the 1756-IRT8I?

• Versatility: Supports multiple input types including RTD, thermocouple, mV, and resistance

• High Resolution: 24-bit resolution for precise measurements

• Isolation: Individually isolated channels enhance signal integrity

• Integration: Seamlessly integrates with ControlLogix systems

• Flexibility: Configurable input ranges and types per channel

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Available and ready to ship globally.