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Fisher™ 3720 Electro-Pneumatic Positioner
Fisher 3720 Positioner
Fisher 3720 electro-pneumatic positioners are designed for use with either diaphragm or piston rotary actuators.
These positioners provide a valve ball or disk position for a specific input signal. The 3720 is created by the addition of a Fisher 3722 electro-pneumatic converter to the 3710 positioner. The positioner provides a valve position in response to a DC current input signal and can easily be configured as single- or double-acting for rotary actuators.
Fisher™ 3720 Electro-Pneumatic Positioner

Specs

Area Classification
Explosion Proof, Intrinsically Safe, Non-incendive, Dust
Certifications
CSA, FM, ATEX, IECEx, CUTR, Peso, KGS, INMETRO, NEPSI, RCM
Communication Protocol
4-20mA Analog
Data Interface
Wired
Diagnostics
No
Input Signal
Electric
Max Outlet Pressure
150 psi
Mounting Type
Actuator Mounted
Operating Temperature
Standard Temperature, High Temperature
Position Control
Modulating
Process Control
Flow, Pressure, Temperature, Level
Safety Certification
NIL
Supply Media
Air
Other Configurations
Contact your local Emerson business partner or sales office to learn about additional specifications or options for this product.

Features

  • 3720 positioners use field-proven spool valve technology for a simple design that gives accurate, fast-responding operation with high cycle life.
  • Case, components, and gasket materials withstand harsh environments.
  • With EPDM O-rings and input module diaphragm, 3720 positioners can be used in low temperature applications.
  • Can be used in applications with special material requirements, as in the food and beverage industry, pharmaceuticals, and tobacco processing.
  • With the cover removed, all internal components are easily accessed.
  • Changes in supply pressure and ambient temperature have minimal effect on positioner operation.
  • To support diagnostic testing of valve/actuator/positioner packages, connectors, piping, and other hardware can be installed between the positioner and the actuator.
  • Standard, low-profile indicator or optional beacon-style indicator mount easily to the positioner cover.