DCS系统和现场智能仪表的检修及校准方案.pptVIP

针对在线仪表的现场校验检修方案现场仪表及设备的检修校验方案压力变送器现场经济型校准检修压力变送器现场便携式校准检修温压液流变送器连续量及离散量输出校准标定温度、压力变送器的现场标定检修防爆0区在线过程校准F754Hart过程校验仪F750P数字压力模块F700PTPK及HTPK压力手泵套装客户需求解决方案F719Pro电动压力校验仪及PAK套管F721双压力过程校验仪PTPK压力手泵套件HTPK压力手泵套装F754Hart过程校验仪连续量标定及校准F725S中文多功能校验仪脉冲和频率校准F725Ex(ia)F700PEx(ia)F718Ex(ia)F707Ex(ia)F721Ex（ia）F750PEx(ia)温度变送器现场经济性校准检修F724综合温度校验仪；F712C热电阻校验仪；F714C热电偶校验仪F754Hart自动动校验仪*谢谢大家!祝大家生活工作愉快!资料下载请点击Fluke示波表对现场总线的诊断TimeVoltageFieldbusSignal0.75to1.0Vp-pPower9to32VoltsDeviceCurrentReceivingTransmitting15to20mAp-pPowerSupply50Ohm1mf基金会现场总线/ProfibusPA总线物理层,曼彻斯特半相解码Fluke示波表对现场总线的诊断Fluke示波表对现场总线的诊断****Whentemperaturetransmittersareinaprocessloop,themeasuredPVorprimary/processvariableisthetemperatureoftheprocessmedium,suchasfluid.回路中的温度变送器通常通常测量的是过程介质，如流体等的温度值；Typically,eitherathermocoupleorRTDsensorsensesthetemperatureandconvertsthemeasurementtoa

4to20mAsignal.通常情况下，我们会把TC或者RTD信号转换为4-20mA然后再输出；The4to20mAsignalisinterpretedbythecontrollerasameasuredtemperature,baseduponthecurrentintheloop.DCS控制器再将4-20mA反译为具体的温度值；Fromthere,thecontrolleroutputiscommonlyusedtocontroladditionalequipmentintheprocess,suchasflowcontrolvalves.基于此温度值，DCS控制回路给阀门发送指令，控制阀门的开度；References3622237,slide6-8/wiki/Current_loopAudienceInteractionPrompt:Askparticipantstodescribetheirexperienceworkingwithprocesstemperaturemeasurement.*Whenpressuretransmittersareinaprocessloop,themeasuredPVorprimary/processvariableisthepressureoftheprocessmedium,suchasfluid.控制回路中的压力变送器，通常用来测量过程介质的压力值，例如流体；Thepressuresensorsensesthepressureandconvertsthemeasurementtoa4to20mAsignal.传感器感知压力，又由变送器将信号转换为4-20mA信号；The4to20mAsignalisinterpretedbythecontrollerasameasuredpressure,baseduponthecurrentintheloop.DCS再将4-20mA信号反译为压力值；Fromthere,thecontrolleroutputiscommonl