There are many types of locations. The types of knowing are: slot machine positioner mobile phone positioner gaming machine positioner valve positioner GPS positioner. The positioner is the primary attachment of the scheduling valve. It is usually used to use the pneumatic scheduling valve. It to withstand the output signal of the scheduler, and then use its output signal to control the dynamic scheduling valve. The device response to the positioner, and the valve position is passed to the upper system through the electrical signal.

　　The positioner is the primary attachment of the control valve. It uses the valve stem displacement signal as the input response measurement signal, and the output signal of the controller is used as a set signal to stop the comparison. , Make the action of the execution agency, set the corresponding connection between the valve pole displacement and the controller output signal. Therefore, the positioner composition uses the valve stem displacement as the measurement signal, and the controller output as the response control system for setting the signal. The distribution variable of the control system is the output signal of the positioner to execute the mechanism.

　　The important dispatching system for scheduling quality is high, and the positioning valve has accurate and reliable positioning. For places with large pressure differences (△ P> 1MPa) at both ends of the valve. By improving the output force of the execution agency by improving the pressure of the gas source, the unbalanced force generated by the liquid to the valve core is to reduce the itinerary error.

　　When the agglutination is high -temperature, high pressure, low temperature, toxic, flammable, explosive, in order to avoid leakage, the filler is often pressed very tightly. Therefore, the friction between the valve stem and the filler is large. Inhibition time stagnation. When the adjusted medium is viscous fluid or contains solid suspension, the positioner can inhibit the resistance of the medium on the valve stem movement. Used for large -caliber (DG> 100mm) scheduling valve to increase the output thrust of the execution agency. When the interval between the scheduler and the actuator is above 60m, the positioner can suppress the transmission of the control signal with a positioning device and improve the action response speed of the valve.

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