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ABB AWT420 4-Wire Dual Input Transmitter  

1. Key Parameters

• Product Model: AWT420
• Product Series: ABB AWT-Series Industrial Process Transmitters (Dual Input Signal Conversion)
• Core Function: Dual independent inputs; supports RTD/thermocouple/4-20mA sensors; 4-wire power supply; standardized output; compatible with ABB 800xA DCS/AC800M PLC.

2. Core Features

• Dual Input Design: Monitors two process parameters simultaneously (e.g., tank temperature + pressure), reducing transmitter quantity and installation cost.
• Multi-Sensor Compatibility: Supports RTD, thermocouple, and 4-20mA sensors, adapting to diverse process measurement needs.
• High Precision: ±0.1% full-scale accuracy ensures reliable process data for critical control loops.
• Industrial Durability: IP65 protection and -40℃~+85℃ operating range withstand harsh field conditions (dust, moisture, temperature fluctuations).

3. Application Fields

• Chemical/Petrochemical: Measures reactor temperature + pressure, transmitting data to ABB 800xA DCS for process regulation.
• Water Treatment: Monitors water level + pH sensor signals (via 4-20mA) for pump control systems.
• Manufacturing: Tracks oven temperature + conveyor line pressure in food processing or plastic molding plants.

4. Precautions

• Compatibility: Ensure sensor type (RTD/thermocouple) matches transmitter input settings; use 4-wire power supply only.
• Installation: Mount in sheltered areas (or use IP65 housing for outdoor use); avoid direct exposure to corrosive gases/liquids.
• Maintenance: Calibrate annually (per ABB guidelines); check wiring connections quarterly to prevent signal loss.
• Spare Parts: Use genuine ABB AWT420 accessories—non-genuine sensors/cables may compromise measurement accuracy.

The structure and details of the product：

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