Fisher® 3620JP electro-pneumatic, double-acting positioner is used with rotary actuators to accurately position control valves used in throttling applications. The positioner mounts integrally to the actuator housing. These rugged positioners provide a valve position proportional to a DC current input signal.


Features & Benefits
Accurate, Efficient, Vibration-Resistant Operation—The positioner provides accurate, fast-response and can withstand the vibrations of most plant environments. Low steady-state air consumption contributes to efficient operation.
Modular Design— The pneumatic 3610J positioner easily converts to an electro-pneumatic 3620J positioner by replacing the existing gauge block with the 3622 electro-pneumatic converter assembly. The converter assembly attaches to the existing positioner providing a simple, compact, and cost-effective conversion.
Versatility—3610J and 3610JP positioners accept a pneumatic input signal and 3620J and 3620JP positioners accept a DC current input signal from a control device. The pneumatic and electro-pneumatic positioners provide split range capabilities and adjustable zero and span. The rangeability of the positioner zero and span permits using a single range spring for all standard input signals including split ranges.
Fewer Spare Parts—Most of the parts for 3610J and 3610JP or 3620J and 3620JP positioners are interchangeable, requiring fewer spare parts to support these positioners.
Easy Positioner Adjustments—With the cover removed, zero, span, and cross-over adjustments are easily accessible and can be made with a screwdriver.
Application Flexibility—Easily adjustable minor loop gain fine tunes the positioner to optimize dynamic response for each specific actuator size and application.
Stable Operation—Changes in supply pressure have minimal effect on positioner operation.
Corrosion Resistant—Case, components, and gasket materials withstand harsh environments. Positioner bleed air purges internal parts and actuator housing for additional protection.
Field Reversible—Simple adjustments permit switching between direct and reverse action; no additional parts are required.