Explosion-Proof Smart Valve Positioner
The Smart Explosion-proof Valve positioner is a digital field control instrument used to precisely adjust the opening of pneumatic control valves in hazardous explosive environments. It receives the 4-20mA DC analog control signal from the DCS system and converts the electrical signal into a corresponding pneumatic output pressure to drive the actuator, so that the actual valve opening is consistent with the control set value.
Product Definition
The Smart Explosion-proof Valve positioner is a digital field control instrument used to precisely adjust the opening of pneumatic control valves in hazardous explosive environments. It receives the 4-20mA DC analog control signal from the DCS system and converts the electrical signal into a corresponding pneumatic output pressure to drive the actuator, so that the actual valve opening is consistent with the control set value.
This positioner features one-touch automatic calibration, valve position feedback, surge lightning protection and anti seismic structure design. Designed with Ex db IIC T6 flameproof enclosure and IP67 ingress protection rating, the product can stably operate within a wide range of ambient temperature from -40°C to +80°C.
It effectively eliminates positioning deviation induced by medium pressure change and stem friction, greatly improving the control linearity and positioning repeatability of the regulating valve system. Fail-safe functions including fail open, fail close and fail lock are optional to guarantee process safety when air supply or power is interrupted.
Core Features
Ex d flameproof certified, safe for hazardous areas.
High precision closed-loop valve position control, stable modulation.
Vibration & temperature resistant for harsh industrial conditions.
Low air consumption, energy saving.
Our Products
Related Products
YT1000 L Precision Electric-pneumatic Valve Positioner
1000 series Electric-pneumatic Valve Positioner is used with the pneumatic control valve to form a closed loop control loop. The DC current signal given by the control system is converted into a gas signal that drives the regulating valve to control the action of the regulating valve. At the same time, feedback is made according to the opening degree of the regulating valve, so that the valve position can be correctly positioned according to the control signal outputted by the system. The electric positioner can be used for single-acting (spring-return type) and double-acting pneumatic actuators.
Smart Valve Positioner uses sensor technology for temperature and position compensation, and has the outstanding characteristics of anti-vibration capacity up to 10g, 10-150Hz. Temperature range -40~+85°C. Through HART or Profibus/FF communication interface, real-time connection between the scene and the control room can be established. Parameter adjustment and status monitoring can be carried out. The output characteristics of free configuration can improve the output characteristics of the ball valve/butterfly valve to the greatest extent.
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