fisher_646_im操作说明书手册

Instruction Manual646 TransducerD101351X012May 2017FisherTM 646 Electro-Pneumatic TransducerContentsFigure 1.Fisher 646 Electro-Pneumatic TransducerIntroduction.................................Mounted on a Sliding-Stem ActuatorScope of Manual.............................Description……SpecificationsEducationalServices ........................4Installation....4Hazardous Area Classifications andSpecial Instructions for "Safe Use"andInstallation in Hazardous Locations...........5MountingPneumatic Connections......................Supply Pressure Requirements ............6Diagnostic Connections...................VentElectrical Connections .......................7Operating Information.........................9Calibration…gEquipment Required......................Calibration Procedure.....................9Principle of Operation .......................10Maintenance,,,,,,,,,,,··11Troubleshooting......12Converter Module ReplacementRelay Maintenance,,.............,·,·,,....13621-1Parts Ordering.…15Parts List.,,,………Parts Kits...,..,.,,,,,,,.,.,,,,,,15IntroductionScope of ManualThis instruction manual provides installation,operation,maintenance,and parts ordering information for the Fisher646 transducer.Refer to separate manuals for instructions covering equipment used with the transducer.Do not install,operate or maintain a 646 electro-pneumatic transducer without being fully trained and qualified invalve,actuator and accessory installation,operation and maintenance.To avoid personal injury or property damage itis important to carefully read,understand,and follow all of the contents of this manual,including all safety cautionsand warnings.If you have any questions about these instructions,contact your Emerson sales office or Local BusinessPartner before proceeding.FISHEREMERSONwww.Fisher.com