Allen-Bradley 1794-IRT8XT
Allen-Bradley 1794-IRT8XT
Allen-Bradley 1794-IRT8XT
Allen-Bradley 1794-IRT8XT
Allen-Bradley 1794-IRT8XT
Allen-Bradley 1794-IRT8XT
Ask our team:
  • Phone: +86 181 0690 9650
  • E-Mail sales1@apterpower.com

1794-IRT8XT

/ 4.9
1001 reviews | Need a Specific Revision?
The Allen-Bradley 1794-IRT8XT is an eight-channel analog input module tailored for processing precise temperature signals from thermocouples and Resistance Temperature Detectors (RTDs).
Get a quick price for 1794-IRT8XT
Quantity
*E-mail
Company
*Mobile
*Content
Upload (gif, jpg, jpeg, png, bmp, doc, docx, xls, xlsx, ppt, pdf, csv)

Technical specifications for 1794-IRT8XT

  • Manufacturer:
    Allen-Bradley
  • Part Number:
    1794-IRT8XT
  • Product Family:
    Flex I/O
  • Product Type:
    Thermocouple/RTD Input Analog Module
  • Number of inputs:
    8 channels (2 groups of 4)
  • Resolution:
    14 bits
  • Open input detection time Immediate:
    detection (max 2 scans)
  • Common mode input range,min:
    +15V
  • Common mode rejection:
    -80 dB @ 5V peak-to-peak, 50…60 Hz
  • Accuracy vs. filter cutoff:
    0.05% of full range in millivolt mode with filtering selected,Hardware only = 0.10% of full range in millivolt mode
  • Overvoltage capability:
    15V DC continuous at 25 °C
  • Weight:
    0.1 kg
  • Estimated shipping dimensions:
    9.2x5.5x5cm
  • Tariff Code:
    8537101190
  • Country of origin:
    USA
  • Place of shipment:
    Xiamen,Fujian,China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Specifications Applications Communication & Connectivity Monitoring & Control

Features:

  • 8-Channel Thermocouple/RTD Input Interface for Flex I/O Terminal Base Units
  • Integrates 14-Bit Resolution Signal Conversion with Open-Circuit Fault Detection
  • Functions with 1794-TB3G, 1794-TB3GS, and 1794-TB3GK Terminal Bases
The 1794-IRT8XT operates as the dedicated temperature input module in a Flex I/O rack, providing precise analog-to-digital conversion for thermocouple and RTD signals. This 1794-IRT8XT module, specifically designed for industrial temperature measurement challenges, solves the problem of interfacing diverse temperature sensors directly with control systems without external signal conditioners. It continuously processes incoming low-level voltage inputs ranging from -40 to +100 mV DC for thermocouples and 0 to 325 mV for RTDs, converting these sensor signals into accurate digital data and distributing this information through the rack backplane to the controller.

The 1794-IRT8XT provides essential temperature measurement functions for the entire Flex I/O rack and is a critical component of the process monitoring path, directly affecting the accuracy and reliability of thermal control systems. One 1794-IRT8XT module is required per terminal base unit depending on the number of temperature points to be monitored.

For flexible temperature monitoring applications, the 1794-IRT8XT organizes its eight input channels into two isolated groups of four, allowing independent configuration of sensor types and measurement ranges. Primary application areas include chemical processing, food and beverage manufacturing, pharmaceutical production, and HVAC control, where precise thermal regulation is essential. In addition to standard continuous sampling, the module performs real-time fault monitoring through its internal circuitry. Using this method, the 1794-IRT8XT continually monitors the health of all input channels.

The 1794-IRT8XT Allen-Bradley Thermocouple/RTD Input Analog Module may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
Allen-Bradley 1794-IRT8XT Thermocouple/RTD Input Analog Module Manuals,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.
Allen-Bradley 1794-IRT8XT Thermocouple/RTD Input Analog Module Specs

General

  • Manufacturer Allen-Bradley
  • Model 1794-IRT8XT
  • Condition New Original ready stock
  • Product Family 1794-IRT8,1794-IR8
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.
  • Extreme Environments: Operates reliably in harsh oil pipelines and petrochemical facilities under severe temperatures (-20 °C to 70 °C).
  • Thermal Management: Tracks high temperatures inside manufacturing furnaces, industrial kilns, and large commercial baking ovens.
  • Safety Integration: Integrates directly into SIL 2 industrial safety architectures when deployed in dual-channel configurations.
  • Power Systems: Measures real-time turbine bearing temperatures and generator core thermal shifts across utilities plants.
  • Multi-Protocol Support: Connects to EtherNet/IP, ControlNet, and DeviceNet protocols using standard FLEX I/O network adapters.
  • Backplane Integration: Links directly to the primary controller via the internal slide-in FlexBus backplane network.
  • Universal Sensors: Accepts direct wiring from 2-wire, 3-wire, or 4-wire RTD sensors and millivolt signals.
  • Thermocouple Types: Processes native voltage inputs from Type B, C, E, J, K, N, R, S, and T thermocouples.
  • Cold Junction Compensation: Uses external 1794-CJC2 thermistor sensors attached at the terminal base block for error correction.
  • High Resolution: Converts analog sensor inputs into precise 16-bit digital values for PLC data tables.
  • Fast Sampling: Executes rapid channel updates to provide immediate data feedback for closed-loop control applications.
  • Noise Suppression: Combines built-in fixed hardware filters with selectable digital filters to remove industrial electrical interference.
  • Channel Diagnostics: Detects open-circuit sensor wire breaks, over-range value limits, and critical module hardware faults.
  • Visual Status: Shows operational health and specific channel faults immediately via front-facing LED diagnostics indicators.
  • Live Maintenance: Allows Removal and Insertion Under Power (RIUP) to swap modules without interrupting system power.
Description
The 1794-IRT8XT is a specialized thermocouple/RTD input analog module developed by Allen-Bradley, designed specifically for industrial temperature measurement and signal acquisition. This 1794-IRT8XT module is engineered to process low-level analog signals from temperature sensors, solving the critical challenge of accurately converting raw thermocouple and RTD inputs into reliable digital data for programmable logic controller systems. By integrating multiple input channels into a single compact unit, the 1794-IRT8XT eliminates the need for external signal conditioning equipment, streamlining temperature monitoring architectures and reducing overall system complexity.

Designed for open-style installation, the 1794-IRT8XT comes without a protective enclosure, making it suitable for mounting within controlled industrial enclosures. The 1794-IRT8XT maintains an isolation voltage rating of 50 Volts continuously and requires an external 24 Volts DC power supply, drawing approximately 95 milliamperes at this voltage. Power dissipation is maintained at a maximum of 3 Watts at 31.2 Volts DC, ensuring efficient thermal management. The 1794-IRT8XT includes local status indicators comprising eight red input status lights and one green power status light, providing immediate visual feedback on module performance and input channel states.

Engineered for reliability in demanding environments, the 1794-IRT8XT identifies open inputs within two scan cycles, enabling rapid fault detection and minimizing process downtime. The module exhibits a maximum thermal dissipation capability of 10.2 British Thermal Units per hour at 31.2 Volts DC and provides an overvoltage tolerance of 15 Volts DC at 25 degrees Celsius, ensuring robust operation under fluctuating electrical conditions. These characteristics make the 1794-IRT8XT a dependable component for continuous temperature monitoring in industrial automation systems.

For installation and integration, the 1794-IRT8XT is designed to mount onto compatible terminal base units including the 1794-TB3G, 1794-TB3GS, and 1794-TB3GK, facilitating straightforward wiring and secure mechanical attachment within Flex I/O racks. The 1794-IRT8XT integrates seamlessly into Allen-Bradley control architectures, communicating directly with the backplane for efficient data transfer to the main processor. When upgrading existing temperature monitoring systems, the 1794-IRT8XT serves as a direct replacement for older analog input modules, offering improved resolution and broader sensor compatibility while maintaining compatibility with established 1794-series terminal bases.

Alternative Names
1794-1RT8XT 1794-IRTBXT 17941RT8XT 1794IRT8XT 1794IRTBXT 179A-IRT8XT 1794-IR8 1794-IRT8
Technical notes
This 1794-IRT8XT product is specially designed for handling severe temperature fluctuations and signal noise in harsh conditions, solving the problem of signal degradation over long wire runs in heavy industrial environments.
Exceptional Service

Our Mission

  • 100% Satisfaction

    We believe expertise is priceless. With over 20 years of experience, and top engineers on staff, we can help you solve or avoid problems that threaten your business.
  • Trust Guaranteed

    Not only do we have a vast inventory, our team makes sure every piece of equipment is in working condition. Your purchases are also backed by our Warranty.
  • Expertise

    Time is money, especially when your equipment is down. We work quickly to get your equipment on its way so you can get it back up and running.

FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
What is the Allen-Bradley 1794-IRT8XT?
The Allen-Bradley 1794-IRT8XT is an eight-channel analog input module from the FLEX I/O series. It is designed to process temperature signals from thermocouples, RTDs, and millivolt input devices, providing accurate temperature measurement for industrial automation systems.
Which thermocouple types are compatible with the 1794-IRT8XT?
The 1794-IRT8XT supports a variety of thermocouple types, including B, E, J, K, TXK/XK (L), N, R, S, and T. This broad compatibility enables integration into numerous industrial temperature measurement systems.
What terminal base units are required for installation?
The 1794-IRT8XT is designed for use with FLEX I/O terminal base units, including the 1794-TB3G, 1794-TB3GS, and 1794-TB3GK. These bases provide proper wiring termination, grounding, and mechanical support.
What isolation protection does the 1794-IRT8XT provide?
The module features a continuous isolation voltage rating of 50V, helping protect connected devices and maintain signal integrity in industrial environments.

Product Browsing History