Technical Specifications 4-20mA analog input, HART protocol, pneumatic power output, local display and configuration keys.
Functional Features Automatic valve stroke calibration, valve position closed-loop control, HART remote parameter setting, fault diagnosis and alarm.
Application Scenarios Oil refinery, chemical plant, power station, natural gas pipeline pneumatic control valves.
Performance Parameters High control accuracy, good vibration resistance, wide ambient temperature adaptation, reliable long-term field operation.
Material Composition Aluminum alloy die-cast housing, transparent plastic display cover, piezoelectric pneumatic components, position sensor and PCB.
Structural Characteristics Field mounted structure, integrated local operation panel, air connection ports and electrical signal terminals.
Working Principle Compare the set control signal and real valve feedback position, adjust the output air pressure of pneumatic amplifier to drive the valve actuator to reach target stroke.
Installation Requirements Install on valve actuator, connect dry and clean instrument air, connect control signal cable and perform auto calibration.
Usage Notes Prevent dust and moisture entering the housing. Check air supply pressure regularly during operation.
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