Control valve positioner working principle. Types of sov.

Question

Accepted Answer

Control valve positioner is a device used to control the position of a control valve based on the input signal.

Control valve positioner ensures accurate control of the valve position.
It receives a control signal from the controller and adjusts the valve position accordingly.
The positioner compares the valve position with the desired position and sends a pneumatic signal to the actuator to adjust the valve accordingly.
There are different types of control valve positioners such as pneumatic positioners, electro-pneumatic positioners, and digital positioners.
Pneumatic positioners use air pressure to control the valve position.
Electro-pneumatic positioners use an electrical signal to control the air pressure and valve position.
Digital positioners use digital signals and advanced algorithms to control the valve position with high precision.

Accepted Answer

It' working 4 to 20 ma signal

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