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· Product image is representative; revision or series may vary. Contact us to request a specific version.
We provide 1 year warranty for all remaining parts.
The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
In the event of a defect, we will send new equipment, repair equipment or refund the purchase price based on our availability. You must contact us to obtain a return authorization and return the defective device to us within 14 days of reporting the defect.
In the event of a defect, we will send new equipment, repair equipment or refund the purchase price based on our availability. You must contact us to obtain a return authorization and return the defective device to us within 14 days of reporting the defect.
We have been working hard to update our inventory. If we have stock or parts available for new factory purchases, you can contact the order online.
If we do not currently have an inventory, the displayed quantity will show "Ask". Please create an online quote or contact us by phone, fax or email to check availability.
Amikon offers a wide range of components, products and services related to industrial automation. We have a large surplus of stocks and are also distributors of new products from a variety of quality manufacturers.
Technical specifications for 1794-IRT8
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Product Model1794-IRT8
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Spare Model1794IRT8
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Product ParametersFLEX I/O Thermocouple/RTD Input Analog Module
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Tariff Code8537101190
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Country of originUSA
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Place of shipmentXiamen, China
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In stock1 unit
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Estimated Shipping Size9.2x5.3x4.8cm
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ManufacturerAllen-Bradley
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Weight0.1 kg
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Number of inputs8 channels
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Nominal input voltage ranges-40…+100 mV DC for thermocouples
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Resolution14 bits
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Common mode input range, min+15V
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Overvoltage capability15V DC continuous at 25 °C
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Overall drift with temperature, max50 ppm/°C of span
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External DC power supply voltage24V DC nom
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Voltage range19.2…31.2V DC
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Supply current95 mA @ 24V DC
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Power dissipation, max3.0 W @ 31.2V DC
Description
The Allen-Bradley 1794-IRT8 FLEX I/O Thermocouple/RTD Input Analog Module is an 8-channel temperature input module for the FLEX I/O 1794 series remote I/O platform from Rockwell Automation. It provides high-accuracy temperature measurement by accepting signals from thermocouples, RTD sensors, and millivolt sources, allowing integration of temperature monitoring devices into Allen-Bradley PLC and control systems.
The module converts low-level analog temperature signals into digital data and communicates with the controller through a FLEX I/O adapter. It supports 2-wire, 3-wire, and 4-wire RTD connections, thermocouple inputs, and mV measurement applications. The 1794-IRT8 is commonly used in process control, machine automation, furnace systems, HVAC monitoring, and industrial temperature measurement applications.
The module converts low-level analog temperature signals into digital data and communicates with the controller through a FLEX I/O adapter. It supports 2-wire, 3-wire, and 4-wire RTD connections, thermocouple inputs, and mV measurement applications. The 1794-IRT8 is commonly used in process control, machine automation, furnace systems, HVAC monitoring, and industrial temperature measurement applications.
Revisions
Revision Part #
Also known as
Alternative Names
1794-1RT8
1794IRTB
I794IRT8
1794-IRTB
179A-IRT8
I79A-1RTB
17941RT8
179AIRT8
I79A1RTB
1794IRT8
I794-IRT8
Information
Overview
Manuals
Technical notes
Product Applications
Signal Wiring & Sensors
Features:
- FLEX I/O Thermocouple/RTD Input Analog Module
- Flex I/O 1794
- Wire-off, overrange, and underrange detection
The Allen-Bradley 1794-IRT8 is shipped with 2 cold junction compensators. This cold junction compensator increases the accuracy of the module for Thermocouple mode. 1794-IRT8 module has a nominal voltage rating of 24 Volts DC and 8 analog inputs. It can connect to up to 8 RTD or thermocouple inputs. The front panel of the 1794-IRT8 module has a nameplate that identifies the module, a removable label that the users can customize, a keyswitch position indicator, and LED status indicators.
The 1794-IRT8 Allen-Bradley FLEX I/O INPUT MODULE may still be available for purchase and support from Amikon Limited beyond End-Of-Life (EOL) by the manufacturer (OEM).
Allen-Bradley 1794-IRT8 FLEX I/O INPUT 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. All prices are shown in USD.
The module accepts up to eight thermocouple or RTD inputs. The inputs are nonisolated and areselected with analog multiplexers. The inputs accept millivolt or resistive inputs. Default inputspans are -40.00 mV… +100.00 mV or 0.0…500.0 Ω. Fault indicators are located field side.No switches or jumpers are used on the TC and RTD Input module. The inputs have both fixedhardware filters and selectable firmware digital filters
- Process Manufacturing:Precise heat regulation for kilns/ovens/furnaces quality
- Energy & Power:Gas turbine exhaust & boiler temp tracking
- Machinery & Equipment:Prevents diesel engine/compressor overheating.
- Oil, Gas, & Chemical:Piping/reactor temps in hazardous areas (FLEX I/O XT)
This content has been produced using multiple sources.Amikon takes no responsibility for the accuracy of this information. Always consult the original equipment manufacturer for the most up to date instructions and information.
Thermocouple Configurations: Attach the two provided 1794-CJC2 cold junction compensator sensors to the base terminals to actively adjust for localized temperature drifts. Use appropriate shielded thermocouple extension wire.
RTD Configurations: The hardware supports 2-wire, 3-wire, and 4-wire RTD options. For 3-wire variants, route the matching compensated leads directly to the dedicated return pins.
Millivolt (mV) Signals: Use high-quality shielded twisted-pair wiring (such as Belden 8761) to minimize industrial electromagnetic noise interference.
Technical notes
The 1794-IRT8 mounts on 1794-TB3G, 1794-TB3GS, or 1794-TB3GK terminal base units and communicates with the controller via the FlexBus backplane. It requires an external 24 V DC power supply (95 mA) and draws 40 mA from the FlexBus. Maximum power dissipation is 3.0 W at 31.2 V DC. The module supports Removal and Insertion Under Power (RIUP) for maintenance without system shutdown.
FAQs
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What is the 1794-IRT8？
+The Allen-Bradley 1794-IRT8 is an 8-channel, non-isolated thermocouple, RTD, and millivolt input module used in FLEX I/O systems. -
What are the primary input capabilities of the module?
+The module features 8 analog inputs divided into two isolated groups of four channels each. It handles nominal input voltage ranges from -40 to 100 mV DC for thermocouples and 0 to 325 mV for RTD sensors. -
Which terminal base units are compatible with the module?
+It mounts onto 1794-TB3G, 1794-TB3GS, and 1794-TB3GK terminal base units. -
Does the module utilize electrical isolation?
+Yes, it features a continuous isolation voltage rating of 50V (Basic Insulation Type) between the field side and the system backplane. -
What is the maximum current limit allowed through the terminal base?
+The total current draw passed through any single terminal base unit is strictly capped at 10 A. If your configuration draws more, you must isolate the lines and utilize separate power connections.
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