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Fisher 846 Electro-Pneumatic Transducer

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.

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Product bulletin Fisher 846 Electro-Pneumatic Transducer

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Area Classification	Explosion Proof, Intrinsically Safe, Non-incendive, General Purpose, Flame Proof
Certifications	CSA, FM, ATEX, IECEx, CUTR, Regional
Communication Protocol	4-20mA Analog
Data Interface	Wired
Diagnostics	No
Input Signal	Electric
Max Outlet Pressure	35 psig
Mounting Type	Remote Mount, Actuator Mount
Operating Temperature	Standard Temperature
Position Control	Modulating Control
Power Source	Local
Supply Media	Air

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.

Fisher 657 and 667 Diaphragm Actuators

Brands

Fisher 846 Electro-Pneumatic Transducer

Fisher 657 and 667 Diaphragm Actuators

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