fisher_846_im操作说明书手册

Instruction Manual846 TransducersD102005X012January 2013Fisher 846 Current-to-Pressure TransducersContentsFigure 1-1.Fisher 846 Current-to-Pressure1.IntroductionTransducerScope of Manual2Description…SpecificationsRelated Documents .........................22Educational Services ........................62.InstallationHazardous Area Classifications and SpecialInstructions for Safe-Use and Installationin Hazardous Locations.....................PCSA.…9FM..ATEX.…10IECEx..…1ATEX/IECEx12Mounting.....。…13Pressure Connections13Supply Pressure.........................155.TroubleshootingOutput Pressure19Diagnostic Features ........33Electrical Connections9Stroke Port.............3VentingPorts..............................20Remote Pressure Reading (RPR)33Signal Interruption .........20Using the HART Communicator to3.CalibrationRead the RPR Signal33Standard Performance:Using a Frequency Counter toFull Range Input,Direct Action23Read the RPR Signal..·35Multirange Performance:In-service Troubleshooting ..................35Full Range Input,Direct Action23Troubleshooting in the Shop38Standard Performance:6.MaintenanceSplit Range Input,Direct Action24Module Final Assembly474 to 12 mA Input Signal24Removing the Module Final Assembly412to 20 mA Input Signal24Replacing the Module Final Assembly45Standard Performance:Electronic Circuit Board......................46Full Range Input,Reverse Action25Remote Pressure Reading(RPR)Jumper.....46Multirange Performance:Range Jumper.…47Full Range Input,Reverse Action25Action.47Standard Performance:Removing the Electronic Circuit Board47Split Range Input,Reverse Action26Replacing the Electronic Circuit Board484 to 12 mA Input Signal26Pilot/Actuator Assembly4812 to 20 mA Input Signal26Action.......4810to 50 mA Input Signal。。。。。。27Removing the Pilot/Actuator Assembly9Transporting the Module Final Assembly27Replacing the Pilot/Actuator Assembly504.Principle of OperationModule Subassembly .......................50Electronic Circuit...........................29Terminal Compartment50MagneticActuator30Exhaust and Stroke Port ScreensPilot Stage.……307.Parts List ...........Booster Stage318.Loop Schematics/Nameplates57FISHEREMERSON.www.Fisher.comProcess Management