ControlLogix | Allen-Bradley | 1756-IRT8I 8PT RTD Thermocouple Input ControlLogix -SA

Product Description: Allen-Bradley 1756-IRT8I

The Allen-Bradley 1756-IRT8I is an 8-channel analog input module for the ControlLogix platform. It supports both RTD (Resistance Temperature Detector) and thermocouple (TC) inputs, providing high-resolution and isolated temperature measurements. Each channel is individually isolated, allowing for greater flexibility and improved signal integrity. The module is designed for demanding temperature monitoring and process control applications in industrial automation systems.

Key Features

• 8 individually isolated analog input channels
• Supports RTD (Pt100, Pt1000, etc.) and thermocouple types (J, K, T, E, R, S, B, N)
• High accuracy and resolution for precise temperature measurements
• Channel-to-channel isolation for noise reduction and signal integrity
• Configurable per channel for RTD or thermocouple use
• Overrange and underrange detection
• Integrated open circuit detection for TCs
• Status and diagnostic indicators per channel
• Requires 1756 ControlLogix chassis and power supply

Technical Specifications

• Number of Channels: 8 (individually isolated)
• Input Types: Thermocouple (J, K, T, E, R, S, B, N) and RTD (Pt100, Pt1000, Ni100, etc.)
• Input Range: Sensor-dependent
• Resolution: 16 bits nominal
• Accuracy: ±0.1% of full scale (sensor and configuration dependent)
• Channel Isolation: 250V RMS channel-to-channel and channel-to-backplane
• Update Rate: Programmable per channel
• Operating Temperature: 0°C to 60°C
• Storage Temperature: -40°C to 85°C
• Enclosure: Fits standard 1756 chassis
• Certifications: UL, CE, CSA, ATEX, IECEx

Application Areas

• Industrial temperature monitoring
• Process control systems (chemical, food & beverage, pharmaceutical)
• Machine condition and thermal management
• Multi- zone furnace and oven control
• High-accuracy thermal profiling systems
• Any environment requiring isolated analog input measurements

Advantages

• Individual channel isolation improves safety and signal quality
• Supports multiple sensor types for flexible deployment
• Enhanced diagnostics reduce downtime and troubleshooting time
• High accuracy ideal for precision process control
• Seamless integration into ControlLogix systems for scalable applications