Fisher 846 Electro-Pneumatic Transducer
Fisher
产品编号: 846
生产厂家: Fisher
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Description for 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.FeaturesThe 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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