PRIME – Positioner WIP

     WIP smart valve positioner is a two-wire system instrument made by Prime. The positioner is a control accessory of pneumatic valve. It is widely used in automatic control systems of petroleum, chemical, electricity, metallurgy, paper and pulp industry and other fileds.

WIP smart valve positioner accepts the 4~20mA valve setting analog signal from the control system. This valve setting value will be converted by an analog to digital converter (ADC) to digital signal then input to CPU. At the same time, instrument gets the actual valve position from location sensors. The two signals are compared by the instrument software so as to control the intake and exhaust of the pneumatic actuator, and drive the valve to reach setpoint (refer to Figure 2-1).

WIP smart valve positioned is based on microprocessor technology. It can overcome friction and the imbalance power on the control valve well, and improve the response speed of control valve, which makes the position set rapidly and accurately. It is not only able completely substitute conventional valve positioner, but also is able to directly access HART network, exchanging information between control system and positioner.