Fisher 3661 Electro-Pneumatic Positioner

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. 

Any questions?

Erik Rune
Solution Seller
Phone. +46 54-57 92 31

Kenneth Olsson
Account Manager
Phone. +46 54-57 92 04

Martin Pettersson
Solution Seller
Phone. +46 54-57 92 40

Patrik Andreasson
Account Manager
Mob. +46 72 222 76 31

Rickard Andersson
Account Manager
Phone. +46 40-33 02 34

Morten Noppenau
Country Manager Askalon Denmark
Phone. +45 2121 3491

Peder Hvidberg
Area Account Manager West
Phone. +45 2178 5053

Taneli Luhanko
Inside Sales Engineer
Phone. +358 207 416 202
Mob. +358 40 757 4208

Area Classification Intrinsically Safe, Non-incendive, Dust
Certifications CSA, FM, ATEX, IECEx, CUTR, Peso, KGS, INMETRO, RCM
Communication Protocol 4-20mA Analog
Diagnostics No
Input Signal Electric
Max Outlet Pressure 90 psi
Mounting Type Actuator Mounted
Operating Temperature Standard Temperature
Position Control Modulating
Safety Certification NIL
Supply Media Air
  • Positioner design provides accurate, fast-responding instruments able to withstand the vibrations of most plant environments. Low steady-state air consumption contributes to efficient operation.
  • Easily adjustable gain and damping adjustments fine tune the positioner stability to specific application requirements.
  • Positioner accepts a standard milliampere DC input signal from a control device. This positioner provides split range capabilities and adjustable zero and spans.
  • Most of the parts for 3661 positioners are interchangeable; requiring fewer spare parts to support these positioners.
  • The case and cover are designed to withstand mechanical vibration and rough handling.
  • Zero and span adjustments can be made with the cover in place.
  • To support diagnostic testing of valve/actuator/positioner packages with the FlowScanner™ valve diagnostic system, connectors, piping, and other hardware can be installed between the 3661 positioner and the actuator.

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