Introduction
The Allen Bradley 1794-IF8IH is a high-precision thermocouple input module within the FLEX I/O system, designed for industrial temperature measurement applications. It provides 8 channels for thermocouple input, supporting multiple thermocouple types with high accuracy and noise immunitéy. This module is ideal for process monitoring, industrial ovens, chemical plants, and automated systems where reliable temperature data is critical for control and safety.
Technical Specifications
| Parameter | Specification | Description |
|---|---|---|
| Module Type | Thermocouple Input Module | 8-channel temperature input for FLEX I/O systems |
| Number sur Channels | 8 | Independent input channels |
| Supported Thermocouples | Types J, K, T, E, R, S, B, N | Wide compatibility for various industrial applications |
| Input Range | -200°C to +1820°C (-328°F to +3308°F) | Depending on thermocouple type |
| Resolution | 0.1°C | High-resolution temperature measurement |
| Accuracy | ±0.25% sur span | Ensures precise process control |
| Input Impedance | > 10 MΩ | Minimizes loading on thermocouple circuits |
| Filtering | Built-in noise rejection | Reduces electrical interference |
| Isolation | Channel-to-backplane | Prevents crosstalk and ground loops |
| Power Supply | 24 V DC (via FLEX I/O backplane) | No external power needed |
| Current Draw | 250 mA typical | Drawn from FLEX I/O backplane |
| Operating Temperature | 0°C to +60°C (32°F to 140°F) | Industrial-rated range |
| Storage Temperature | -40°C to +85°C (-40°F to 185°F) | For non-operational storage |
| Relative Humidity | 5%–95% non-condensing | Suitable for factory environments |
| Shock Resistance | 30 g operational | Meets IEC 60068-2-27 |
| Vibration Resistance | 5–2000 Hz @ 1 g | Industrial-grade durability |
| Dimensions (H × W × D) | 120 mm × 40 mm × 90 mm (4.7″ × 1.6″ × 3.5″) | Standard FLEX I/O module footprint |
| Poids | 0.35 kg (0.77 lbs) | Lightweight for easy chassis installation |
Applications
The 1794-IF8IH module is widely applied in systems requiring precise temperature monitoring:
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Process Plants – Chemical, food, and pharmaceutical processes requiring temperature control.
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Industrial Ovens and Furnaces – High-temperature monitoring for production quality.
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HVAC and Environmental Control – Temperature sensing for large-scale building automation.
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Laboratory Equipment – Data acquisition and precise thermal measurement.
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Safety Systems – Integration with safety PLCs to monitor temperature limits.
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OEM Machines – Embedded into custom machinery requiring thermocouple monitoring.
Advantages
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High-Precision Measurement: 0.1°C resolution ensures accurate readings for tight process control.
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Multiple Thermocouple Support: Compatible with J, K, T, E, R, S, B, and N types for flexibility.
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Channel Isolation: Independent channels minimize crosstalk and measurement errors.
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Robust Industrial Design: Shock, vibration, and environmental tolerance ensures reliable operation.
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Noise Rejection: Built-in filtering reduces electrical interference in industrial environments.
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Seamless FLEX I/O Integration: Works with all standard FLEX I/O chassis and I/O adapters.
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Compact and Lightweight: Small footprint for easy installation in distributed I/O systems.
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Low Power Consumption: Efficient backplane power usage reduces overall system load.
Informations sur l'entreprise
E-mail: [email protected]
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Add: Alishan Building, 2 Lvling Rd, District Siming, Xiamen, Fujian, Chine, 361006
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