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Fisher846Electro-PneumaticTransducer-AhwazAutomation|ProcessControls|AhwazMeasurementInstruments

Fisher Positioner/

Fisher 846 Electro-Pneumatic Transducer

Product Description

The Fisher 846 transducer converts an electrical output signal from a controller to a pneumatic signal necessary to operate a control valve actuator or pneumatic positioner. Using electronic feedback, the transducer can correct for error-producing effects, such as variations in supply pressure and downstream leakage.

  • Product Details

Specifications

Area ClassificationExplosion Proof, Intrinsically Safe, Non-incendive, General Purpose, Flame Proof
CertificationsCSA, FM, ATEX, IECEx, CUTR, Regional
Communication Protocol4-20mA Analog
Data InterfaceWired
DiagnosticsNo
Input SignalElectric
Max Outlet Pressure35 psig
Mounting TypeRemote Mount, Actuator Mount
Operating TemperatureStandard Temperature
Power Source
Local
Supply Media
Air
Position ControlModulating Control

Features

  • The low-mass pilot stage, mechanically damped deflector bar, and rugged construction provide stable performance in vibration.
  • Large diameter nozzles, free-flow pilot stage design, and large internal pneumatic supply passages provide excellent tolerance to reducing the effects of contaminant build-up and erosion.
  • The electronic feedback control network monitors the pneumatic output signal, detects any input-output deviations and corrects them.
  • Major mechanical and electrical components are incorporated into a single field-replaceable master module.
  • With Stroke Port, a constant bleed from the pilot stage vents through a hole in the module cover. Covering the hole increases the transducer output to confirm the proper operation of the pilot and booster stages and stroke the actuator.

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