Fisher Controller and Instrument
Fisher 3661 Electro-Pneumatic Positioner
Fisher 3661 electro-pneumatic single-acting positioners are used with various actuators on sliding-stem valves for throttling applications. These rugged positioners provide a valve position proportional to a pneumatic input or a standard millampere DC input signal received from a control device.
- 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.