Fisher™ 546 Series Electro-Pneumatic Transducers

Fisher

Fisher™ 546 Series Electro-Pneumatic Transducers

Fisher

Fisher 546, 546S, and 546NS transducers receive a direct-current input signal and use a torque motor, nozzle-flapper, and pneumatic relay to convert the signal to a proportional pneumatic output signal. Nozzle pressure, which operates the relay, is also piped to the torque motor feedback bellows. This provides a comparison between input signal and nozzle pressure and corrects errors in nozzle pressure.

Specifications

Area Classification
Explosion Proof, Non-incendive
Certifications
CSA, FM
Communication Protocol
4-20mA Analog
Data Interface
Wired
Diagnostics
No
Input Signal
Electric
Mounting Type
Remote Mount, Actuator Mounted
Operating Temperature
Standard Temperature
Position Control
Modulating Control
Process Control
Pressure
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

  • High natural frequency of torque motor moving parts results in negligible vibration influence. Meets typical seismic requirements for nuclear service.
  • Screw driver adjustments for span and zero are conveniently located and have arrows indicating rotation to increase settings.
  • No additional are parts required to reverse action.
  • Integrated pneumatic relay is mounted outside case and can be removed without disturbing electrical or pressure connections or impairing explosion safety.

Documents & Drawings