Fisher 3661 electro-pneumatic single-acting positioners are used with various actuators on sliding-stem valves for throttling applications.
Fisher 3661 Electro-Pneumatic Positioner
Types
Fisher Controller and Instrument, Fisher 3661 Electro-Pneumatic Positioner
Fisher 3661 Electro-Pneumatic Positioner
Features
Most of the parts for 3661 positioners are interchangeable; requiring fewer spare parts to support these positioners.
Fisher 3661 Electro-Pneumatic is easily adjustable gain and damping adjustments fine tune the positioner stability to specific application requirements.