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The 1794-IT8 is a high-density, non-isolated analog temperature input module manufactured by Rockwell Automation. It is mainly used in industrial automation control systems to convert field thermocouple or millivolt (mV) signals into digital signals, which are then transmitted to the PLC.
Universal Sensor Compatibility
High-Precision 16-Bit Resolution
Hot-Swappable RIUP Technology
The Allen-Bradley FLEX I/O system offers a flexible, modular, and cost-effective solution for your industrial automation and control. The space-saving design offers rack-based I/O functionality of up to eight modules and provides digital, analog, HART analog, and specialty I/O with 4...32 points per module with flexible mounting and wiring options.Within this versatile platform, the Allen-Bradley 1794-IT8 stands out as a high-density, 8-channel temperature input solution that seamlessly brings thermocouple and millivolt signals into the distributed architecture. Built with an advanced 16-bit analog-to-digital converter (ADC), the module supports up to 9 distinct industrial thermocouple types (B, C, E, J, K, N, R, S, T) alongside two raw millivolt spans, allowing precise, software-configurable temperature logging per channel.
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
Allen Bradley 1794-IT8 Thermocouple MV Module Manuals, Datasheets, Drivers, 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.
Fossil Fuel Power
Monitors superheater boiler tubes and flue-gas duct temperatures via high-temperature thermocouples to optimize combustion efficiency.
Petrochemical & Refining
Tracks high-accuracy multi-point temperatures along massive distillation columns and catalytic cracking reactors.
Pharmaceutical Manufacturing
Validates heat distribution inside steam sterilization autoclaves and cleanroom temperature-controlled chemical reactors.
Iron & Steel Manufacturing
Logs thermal profiles of blast furnace hearths, ladles, and reheating furnaces that exceed thousands of degrees.
Semiconductor
Controls the thermal ambient within high-temperature diffusion, oxidation, and chemical vapor deposition (CVD) furnaces.
Pulp & Paper Mills
Monitors steam-heated yankee drying cylinders and black liquor recovery boiler thermal profiles.
When using the 1794-IT8 module, it must be plugged into a dedicated terminal base with Cold Junction Compensation (CJC)—strongly recommended 1794-TB3T—otherwise, severe temperature measurement deviations will occur. Since the channels are non-isolated, field thermocouple probes must be properly insulated and grounded against noise to prevent ground loop currents from damaging internal chips. Additionally, when performing Removal and Insertion Under Power (RIUP), ensure the latching mechanism is securely locked and the external 24V DC power is stable to avoid communication disruptions caused by transient electrical arcing.
The 1794-IT8 is an 8-channel Thermocouple/Millivolt input module belonging to the Allen-Bradley FLEX I/O distributed system. It is designed to interface temperature sensors directly with PLCs like ControlLogix or CompactLogix.
Does the 1794-IT8 require a terminal base for installation?
Yes, the 1794-IT8 is a plug-in module and cannot be used alone. It must be mounted on a compatible FLEX I/O terminal base, such as the 1794-TB3 or 1794-TB3T.
What is the signal resolution of the 1794-IT8 module?
The module features a high-precision 16-bit analog-to-digital converter (ADC), providing excellent measurement resolution for subtle industrial temperature variations.
How many channels are available on a single 1794-IT8 module?
It provides 8 non-isolated input channels per module, allowing you to monitor up to 8 independent temperature points simultaneously.
What communication adapters work with the 1794-IT8?
As part of the FLEX I/O family, the 1794-IT8 works seamlessly with EtherNet/IP (e.g., 1794-AENTR), ControlNet (1794-ACN), or PROFIBUS network adapters.
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Disclaimer: We are not an authorized distributor or distributor of the product manufacturer of this website, The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because our company is not an authorized distributor of this product, the Original Manufacturer`s warranty does not apply.While many DCS PLC products will have firmware already installed, Our company makes no representation as to whether a DSC PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. Our company also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from our company, its distributors, or any other source. Our company also makes no representations as to your right to install any such firmware on the product. Our company will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.
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