Electro-pneumatic transducer 546

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.