Product Details
Product Description
The 1794-IT8 is a high-precision thermocouple input module from Allen-Bradley’s FLEX I/O series, offering reliable temperature measurement for industrial control systems. It supports up to 8 thermocouple channels and is designed for integration with 1794-TB2, -TB3, and -TB3T terminal bases. The module provides robust protection, accurate signal conversion, and industrial-grade durability for demanding environments.
Technical Specifications
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Manufacturer: Allen-Bradley
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Model Number: 1794-IT8
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Product Type: Thermocouple Input Module
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Number of Inputs: 8 channels
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Compatible Terminal Bases: 1794-TB2, -TB3, -TB3T
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Nominal Input Voltage Range: -76.5 to +76.5 mV
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Resolution: 16 bits (2.384 µV typical)
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Indicators: 1 red/green power status LED
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Flexbus Current: 20 mA
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Power Dissipation: 3 W maximum @ 31.2 VDC
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Thermal Dissipation: 10.2 BTU/hour maximum @ 31.2 VDC
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Keyswitch Position: 3
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Isolation Voltage: Tested 850 VDC for 1 s (inputs and user power to logic)
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Data Format: 16-bit 2’s complement or offset binary (unipolar)
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Channel Bandwidth: 0–2.62 Hz (-3 dB)
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Operating Humidity: 5–95% non-condensing, IEC 60068-2-30
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Vibration Resistance: 5 g @ 10–500 Hz, IEC 60068-2-6
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Dimensions (L×W×H): 5.33 × 9.4 × 4.57 cm
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Weight: 2 kg
Key Features
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High Accuracy: 16-bit resolution ensures precise thermocouple readings.
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Compact Form Factor: Small footprint for easy integration into FLEX I/O systems.
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Visual Status: Red/green LED for power and module activity monitoring.
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Industrial Durability: Tested for vibration, temperature, and isolation withstand.
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Flexible Data Output: Supports 2’s complement and offset binary formats.
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Easy Installation: Mounts on standard FLEX I/O terminal bases.
Applications
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Process temperature monitoring in manufacturing and chemical plants
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Integration in distributed FLEX I/O control systems
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HVAC and environmental control requiring precise temperature input
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Industrial automation requiring multiple thermocouple channels
FAQ
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Q: How many thermocouple inputs does 1794-IT8 support?
A: The module provides 8 independent channels for temperature measurement. -
Q: What is the isolation capability?
A: Inputs and user power are tested to withstand 850 VDC for 1 second.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
The Shift to Flexible IO Modules in Modern Industrial Automation
Traditional control systems rely on dedicated Input Output (IO) cards for industrial automation. Each conventional module processes a single signal type, such as Digital Input (DI), Digital Output (DO), Analog Input (AI), or Analog Output (AO). A standard 16-channel card accepts only one specific channel type across all ports. This inflexible hardware design often creates severe engineering bottlenecks during project execution. Engineers frequently must install entirely new cards to accommodate a single extra sensor. Consequently, late design changes increase control cabinet space requirements and drive up project costs.
DCS Commissioning Steps in Industrial Automation Projects
Commissioning a Distributed Control System (DCS) represents a crucial milestone when deploying modern process automation infrastructure. Field engineers must execute systematic verification steps to transition complex control hardware from static installation to dynamic plant control. Proper commissioning ensures that controllers, I/O modules, network switches, and HMI software operate in strict compliance with engineering design specifications before introducing live process fluids.
PLC and DCS Control System Spares Strategy: Engineering Guidelines
Modern factory automation relies on high-speed fiber optic backbones to link distributed control systems across noise-intensive industrial environments. Unlike copper wiring, optical fibers transmit data via light pulses, making them completely immune to electromagnetic interference (EMI). Field engineers must master optical cable joining and fusion splicing techniques to guarantee low-loss data transmission across critical Programmable Logic Controller (PLC) and Distributed Control System (DCS) nodes.