Fisher™ 546 Series Electro-Pneumatic Transducers

Fisher™ 546 Series Electro-Pneumatic Transducers

Product Description

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 of Fisher™ 546 Series Electro-Pneumatic Transducers

• 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.