What is an electro valve positioner

What is an electro valve positioner?

The electro-pneumatic valve positioning device refers to changing the output signal of the electric controller into a pneumatic signal to drive the pneumatic actuator. It has two functions: an electric-pneumatic converter and a pneumatic valve positioning device.

On the one hand, the electric-pneumatic valve positioner has the function of an electric-pneumatic converter, and the 0~10 mA DC or 4~20 mADC signal output by the electric controller can be used to control the pneumatic actuator; on the other hand, it also has the function of a pneumatic valve positioner. The valve position can be accurately positioned according to the signal sent by the controller (that is, the input signal has a one-to-one correspondence with the valve position).

Electric valve positioner is used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media. It can play a certain role in regulating, diverting, and cutting off. The role of

The valve positioner bai, according to the structure, is divided into pneumatic valve du positioner, electric zhi-gas valve positioner and intelligent dao valve positioner. It is the main accessory for regulating zhuan valve. It is often used in conjunction with pneumatic regulating valve, and it accepts regulators. Then use its output signal to control the pneumatic control valve. When the control valve is actuated, the displacement of the valve stem is fed back to the valve positioner through the mechanical device, and the valve position status is transmitted to the upper system through electrical signals.