Fisher 3661 Electro-Pneumatic Positioner

Fisher 3661 Electro-Pneumatic Positioner

Any questions?

Taneli Luhanko
Inside Sales Engineer
Phone. 0207 416 202
Mob. 040 757 4208

Taneli.Luhanko@askalon.fi

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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. 

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.