Allen-Bradley 1794-IRT8XT FLEX I/O Thermocouple/RTD Input Module
$123.00
$320.00
Description
Allen-Bradley 1794-IRT8XT FLEX I/O Thermocouple/RTD Input Module
Configured for thermocouple and RTD signal acquisition in FLEX I/O 1794 systems, the Allen-Bradley 1794-IRT8XT (1794-IRT8XT Thermocouple/RTD Input Module) provides direct temperature measurement interface through eight isolated input channels.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 1794-IRT8XT |
| Brand | Allen-Bradley |
| Origin | United States |
| Product Type | Thermocouple/RTD Input Module |
| Series | FLEX I/O 1794 |
| Input Channels | 8 channels, divided into two groups of 4 channels |
| Supported Inputs | Thermocouple and RTD temperature inputs |
| Thermocouple Types | Type B, E, J, K, TXK/XK(L), N, R, S, T |
| Input Range | -40 to 100 mVDC for thermocouples; 0 to 325 mV for RTDs |
| Resolution | 14 bits |
| Isolation Voltage | 50 V continuous |
| External Power Supply | 24 VDC |
| Supply Current | 95 mA at 24 VDC |
| Power Consumption | 3 W maximum at 31.2 VDC |
| Weight | 0.44 lbs |
| Operating Temp | -20 to 70 deg C |
| Enclosure Style | Open-style enclosure |
| Mounting Type | DIN rail mounting |
| Protection Rating | IP20 |
| Status Indicators | 8 red input status indicators and 1 green power status indicator |
| Open Input Detection | Immediate detection, maximum 2 scans |
Profinet / EtherNet-IP Deterministic Networks and I/O Density Scaling
The 1794-IRT8XT is designed for FLEX I/O distributed control architectures where analog temperature channels are integrated through the remote I/O platform. The eight-channel configuration supports I/O density scaling within compact field stations while maintaining channel-level signal processing. The module receives thermocouple and RTD input signals, performs analog conversion at 14-bit resolution, and transfers processed values through the FLEX I/O communication adapter interface.
Frequently Asked Questions
Q: Can the 1794-IRT8XT be installed as a hot-swappable module during system operation?
A: Hot-swap capability depends on the installed FLEX I/O adapter, terminal base configuration, and system operating requirements. Module replacement procedures must follow the applicable Allen-Bradley FLEX I/O installation documentation.
Q: What type of temperature sensors are supported by this input module?
A: The module supports multiple thermocouple types including B, E, J, K, TXK/XK(L), N, R, S, and T, as well as RTD inputs within the specified millivolt range.
Q: How is field signal isolation handled on the 1794-IRT8XT?
A: The module provides a 50 V continuous isolation rating for the input circuitry. Field wiring should follow recommended shielding and grounding practices for analog temperature measurement circuits.
Field Installation Guidelines
- Install the module on the FLEX I/O terminal base assembly using the specified DIN rail mounting arrangement.
- Verify that the 24 VDC external supply polarity and voltage level meet the module power requirements before energizing the circuit.
- Separate thermocouple and RTD signal wiring from high-current power conductors and switching loads to reduce electrical interference.
- Use appropriate shielded instrumentation cable for low-level temperature signals where required by the installation environment.
- Terminate cable shields according to the control system grounding practice to prevent ground loops.
- Confirm terminal base connections and channel assignments before commissioning input scaling.
- Maintain IP20 enclosure protection by installing the module inside a suitable control cabinet or protected panel.
Features
Minimum Order Quantity (MOQ)
We welcome bulk orders and have a minimum order quantity of just one unit.
Certificates and Documentation
Upon request, we can provide all necessary documentation, including Certificates of Origin/Conformance and other required export documents.
Delivery Time
For items in stock, we aim to deliver within 1-3 days after payment confirmation. Items with specified lead times will be delivered according to the quoted schedule.
Payment Methods
We accept 100% T/T (Telegraphic Transfer) payment before shipping. For items with lead times, a 30% deposit is required upfront, with the remaining 70% due before shipment. For RMB transfers, please contact us if you have an agent in China.
Warranty
We offer a standard one-year warranty on all new and original items. If you require an extended warranty, please contact us for additional cost details.
Refund and Return Policy
Your satisfaction is important to us. If you need to return an item, it must be done within 30 days of the order date. The product must be unused, unopened, and in its original packaging with all accessories included. Refunds are processed within 5-7 business days after we receive the returned item. Please note that shipping and related charges are non-refundable.
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