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Product image is representative; revision or series may vary. Contact us to request a specific version.

1794-IT8

Thermocouple Input Module

Product Information

Product Describe

Flex I/O . This module is Thermocouple

and millivolt input module that has Eight (8)

channels compatible with Thermocouple

sensors J, K, E, R, N, S, B, C, T and L sensors

and accepts +/-76.5m voltage range

Technical specifications for 1794-IT8

  • Manufacturer:
    Allen-Bradley
  • Product Category:
    PLC System
  • Spare Part Number:
    1794IT8
  • Estimated shipping dimensions:
    13x13x8.8cm
  • Weight:
    0.2 kg
  • Tariff Code:
    8537101190
  • Country of origin:
    USA
  • Place of shipment:
    Xiamen, Fujian, China
  • Product Line:
    Flex I/O 1794
  • Power Dissipation:
    3W maximum @ 31.2V
  • Resolution:
    16 bits (2.384 microvolts typical)
  • No. of Inputs:
    8 Inputs
  • Nominal Input Ranges:
    -76.5 to 76.5 mV
  • Isolation Voltage:
    850 Volts DC
  • Channel Bandwidth:
    0 to 2.62 Hertz
  • Flexbus Current:
    20 mA
  • Stock:
    30
  • New and original with factory sealed packing

    Brand new and 100% original unit, supplied in factory-sealed packaging, ensuring untouched condition and full manufacturer integrity.
  • New in opened package

    These parts are new. They have not been used, but their original packaging has been opened or the packaging is significantly aged.
  • New surplus

    New surplus item in unused condition, originally manufactured for distribution but not deployed in service.
  • Refurbished

    This product has been repaired by an authorized service center, and worn or aged parts have been replaced with qualified genuine parts. Warranty terms are subject to refurbishment certification and service policies.

More Information

Overview Manuals Principle Core Applications Revisions

Features:

  • Flex I/O Thermocouple and millivolt input module
  • Its acceptable voltage range is ±76.5mV, and its resolution is 16 bits
  • This module has eight channels and is compatible with J, K, E, R, N, S, B, C, T, and L type thermocouple sensors
The 1794-IT8 is a Flex I/O analog input module. Specifically, it is a thermocouple and millivolt input module. This module features eight (8) analog input channels for direct connection to thermocouple sensors of types J, K, E, R, N, S, B, C, T, and L, with a millivolt range of +/-76.5 mV.

Before inserting the 1794-IT8 module into the terminal block base, the user should rotate the key switch on the base to position 3, as this position is crucial for the safe installation and operation of the thermocouple/millivolt module.

The 1794-IT8 Allen Bradley Thermocouple Input Module may still be available for purchase and support from Moore Automated Company beyond End-Of-Life (EOL) by the manufacturer (OEM).
Allen Bradley 1794-IT8 Thermocouple Input Module manual(Datasheets), Link Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
The Allen-Bradley 1794-IT8 FLEX I/O thermocouple module communicates with the PLC via a block transfer option. Block transfer programming relies on moving input signal data words between a designated area in the thermocouple module's memory and the PLC datasheet. Block transfer programming also supports transferring configuration words from the PLC datasheet to the thermocouple module. The Allen-Bradley 1794-IT8 module comes with two cold junction compensators designed for installation in designated locations within the terminal block base unit. The module accepts both grounded and ungrounded thermocouples.
Industrial Automation: Used in factories to accurately monitor the temperature of multiple areas using various types of thermocouples.
Process Control: Ideal for managing temperature-sensitive operations such as chemical, pharmaceutical, or food processing, which require reliable data acquisition.
Data Logging: Provided for technicians to collect and analyze thermal data for research or long-term industrial monitoring.
Millivolt Monitoring: Can be connected to sensors and instruments that generate non-standard millivolt signals (±76.5 mV range).

Revision Part #

Also known as

1794-IT8/A
1794-IT8 Ser A, Series A, Rev A
By purchasing this item, you agree to the Terms & Conditions
Moore Automated is NOT an authorized distributor of Allen-Bradley
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FAQ

  • In a distributed I/O architecture, what are the main signal acquisition functions provided by the 1794-IT8?
    The Allen-Bradley 1794-IT8 is a high-density thermocouple input module designed to acquire and process microvolt-level signals from temperature sensing devices in industrial automation systems.
  • How does the 1794-IT8 achieve high-precision temperature measurement across multiple input channels?
    The 1794-IT8 performs cold junction compensation and high-resolution analog-to-digital conversion, enabling accurate temperature measurement for various types of thermocouples.
  • Why is the 1794-IT8 considered an essential tool for process industries requiring multi-zone temperature monitoring?
    The 1794-IT8 supports simultaneous acquisition of signals from multiple thermocouple inputs, making it ideal for applications requiring distributed temperature monitoring, such as furnaces, reactors, and heat treatment systems.
  • In which industrial sectors is the 1794-IT8 most commonly used?
    The 1794-IT8 is widely used in industries such as metal processing, chemical production, power generation, and food processing, where precise temperature control is crucial.
  • What installation considerations are critical when deploying the 1794-IT8?
    Correct thermocouple wiring, correct polarity, shielding of low-voltage signal lines, and proper module grounding are crucial for maintaining the measurement accuracy of the 1794-IT8.
  • Why is the 1794-IT8 considered a high-performance solution for industrial temperature acquisition?
    The 1794-IT8 integrates multi-channel thermocouple acquisition, high-resolution conversion, and powerful diagnostics, making it a reliable component for precision temperature monitoring in industrial automation.

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