1794-IT8 | Allen-Bradley 8-Channel Flex I/O Thermocouple and Millivolt Input Module

Allen-Bradley · HMIs & Displays

Description  The Allen-Bradley 1794-IT8 is an eight-channel thermocouple and millivolt input module designed for precise temperature and low-level signal monitoring. It supports a wide range of thermocouple types and offers high-resolution measurement capabilities for industrial applications. This module is suitable for processes requiring accurate temperature acquisition using the Flex I/O platform.     Technical Specifications  Condition New/Never Used Surplus Brand Allen-Bradley Category PLCs and Accessories Part Number 1794-IT8 Subcategory PLC Input Modules Number of Inputs 8 thermocouple/mV channels Supported Sensors J, K, E, R, N, S, B, C, T, L Input Range –76.5 to +76.5 mV Resolution 16-bit (2.384 μV typical) Data Format 16-bit 2’s complement or offset binary Isolation Voltage 850 VDC Normal Mode Noise Rejection –60 dB @ 60 Hz System Throughput 325 ms Channel Bandwidth 0–2.62 Hz CJC Units Part number 969424-0 FlexBus Current Draw 20 mA Power Dissipation 3 W max @ 31.2 VDC Module Location 1794-TB2, -TB3, -TB3T terminal bases Indicator Red/green power status LED Nominal Input Range –7.65 to +7.65 mV (thermocouple CJC range) Thermal Dissipation 10.2 BTU/hr Weight 0.25 lb     Information About 1794-IT8  The 1794-IT8 is a Flex I/O thermocouple and millivolt input module designed for direct connection to industry-standard temperature sensors. It is part of the Flex I/O series, enabling modular installation with 1794 terminal base units and communication adapters. The module supports multiple thermocouple types and millivolt ranges, making it suitable for diverse temperature measurement environments. Built-in features such as cold junction compensation and noise rejection technology ensure stable and reliable sensor input performance. Key Features: Eight Analog Input Channels: Supports thermocouple and millivolt signals across a broad range of sensor types. Wide Sensor Compatibility: Accepts J, K, E, R, N, S, B, C, T, and L thermocouples for flexible temperature monitoring. High-Resolution Conversion: Provides 16-bit data acquisition for detailed and accurate signal measurement. Cold Junction Compensation: Integrated CJC units maintain accurate thermocouple readings across temperature variations. Noise Rejection: Normal mode noise rejection of –60 dB at 60 Hz ensures stable measurements in electrically noisy environments. Flex I/O Integration: Mounts on 1794 terminal bases and operates with any Flex I/O adapter for scalable system design. Millivolt Input Capability: Accepts ±76.5 mV signals for interfacing with low-level transducers and specialty sensors. Status Indication: Includes a red/green LED indicator to show power and module status at a glance. The 1794-IT8 delivers the reliability and precision required for industrial temperature monitoring and millivolt signal acquisition.

Brand: Allen-Bradley · Category: HMIs & Displays

Key features

• Eight Analog Input Channels: Supports thermocouple and millivolt signals across a broad range of sensor types.
• Wide Sensor Compatibility: Accepts J, K, E, R, N, S, B, C, T, and L thermocouples for flexible temperature monitoring.
• High-Resolution Conversion: Provides 16-bit data acquisition for detailed and accurate signal measurement.
• Cold Junction Compensation: Integrated CJC units maintain accurate thermocouple readings across temperature variations.
• Noise Rejection: Normal mode noise rejection of –60 dB at 60 Hz ensures stable measurements in electrically noisy environments.
• Flex I/O Integration: Mounts on 1794 terminal bases and operates with any Flex I/O adapter for scalable system design.
• Millivolt Input Capability: Accepts ±76.5 mV signals for interfacing with low-level transducers and specialty sensors.
• Status Indication: Includes a red/green LED indicator to show power and module status at a glance.

Specifications

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