Allen-Bradley | 1794-IRT8 |FLEX I/O (1794 Series)

Product Description: Allen-Bradley 1794-IRT8

The Allen-Bradley 1794-IRT8 is an 8-channel analog input module from the FLEX I/O series, specifically designed for temperature sensing applications. It supports RTD (Resistance Temperature Detector) and thermocouple inputs, offering flexible, high-density temperature input for distributed control systems. This module integrates seamlessly into remote I/O architectures using FLEX adapters and is ideal for process automation requiring compact, scalable solutions.

Key Features

• 8 individually configurable channels
• Supports RTD (Pt100, Ni100) and thermocouple (Type J, K, T, etc.) inputs
• High accuracy and 16-bit resolution for precise temperature measurement
• Configurable for °C or °F units, and linear scaling
• Diagnostic features include open sensor detection
• Compatible with 1794 FLEX I/O terminal bases and adapters
• Hot-swappable in compatible systems

Technical Specifications

• Input Types: RTD (Pt100, Ni100), Thermocouples (J, K, T, etc.)
• Number of Channels: 8
• Resolution: 16-bit
• Input Range: Sensor-specific, auto-scaled via configuration
• Accuracy: ±0.5°C typical (sensor dependent)
• Conversion Time: ~250 ms per channel
• Backplane Current Load: 70 mA @ 5V DC
• Power Supply: Provided via terminal base unit
• Mounting: DIN rail using FLEX I/O terminal base
• Operating Temperature: 0°C to 55°C
• Protection Rating: IP20
• Certifications: UL, cUL, CE, ATEX (when used in approved systems)
• Dimensions: Approx. 94 x 94 x 40 mm (H x W x D)

Application Areas

• Industrial temperature monitoring systems
• Process control in food & beverage, chemical, and pharmaceutical industries
• Distributed control architectures in manufacturing plants
• SCADA-integrated remote I/O applications
• OEM machinery requiring compact thermal input modules

Advantages

• High-density temperature input reduces system footprint
• Supports multiple sensor types for flexible use
• Diagnostic capabilities improve system reliability
• Modular and scalable with other FLEX I/O components
• Easy integration into EtherNet/IP, ControlNet, or DeviceNet networks via FLEX adapters