Pneumatic positioner position control device for use in process automation, has pneumatic bypass booster that is switched and adjusted such that bypass booster operates with small changes of signals of position controller-reference value

摘要

The device has a pneumatically adjustable actuator (5), and a pneumatic servo drive (6) for adjusting the actuator. An electro-pneumatic position controller (1) is provided for controlling the drive based on a position controller-reference value and a control variable. A pneumatic bypass booster (11) is switched and adjusted such that the bypass booster operates with small changes of signals of the position controller-reference value.