KROHNE 涡街流量计 技术资料.pdf

《KROHNE 涡街流量计 技术资料.pdf》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、DWM2000DOperatinginstructionsDWM 2000ElectromagneticFlowmeterwithLCDIndicatorContents1Displaydatainoperatingmode…………………………………………………………………..32FunctionsoftheLCDindicatorfortheDWM2000D………………………………………..42.1Programmableparameters………………………………………………………………………..

2、42.1.1Flowcalibration………………………………………………………………………42.1.2Currentoutputadjustment………………………………………………………….42.1.3Timeconstant………………………………………………………………………..42.2Electronicsmodulechecks……………………………………………………………………..52.3Programmingstructure(Softwaren°1.02)……………………………

3、…………………………52.3.1Userinterfacebuttons………………………………………………………………52.3.2Menunaviagation……………………………………………………………………62.3.3Summaryofprogrammingmenus…………………………………………………82.4ParametersstoredintheEEPROM(menu2.4.3)…………………………………………….102.5Errormessagelist………………………………………

4、………………………………………..112OperatingInstructionsDWM2000D1DisplaydatainoperatingmodeOperatingInstructionsDWM2000D32FunctionsoftheLCDindicatorfortheDWM2000D2.1Programmableparameters2.1.1FlowcalibrationTheGKcanbemodifiedinmenu2.1.3inordertoobtainthemaximumaccurac

5、yatoperatingconditions.Afieldcalibrationrequiresanaccuratereferenceofvelocity.Themeterrecalibration(GKmodification)isalsorecommendedafteranexchangeofelectronicsmodule.Thevalueofthenewcalibrationconstant(GKnew)canbecalculatedasfollows:GKnew=GKoldxVaVmwit

6、h:Va=actualvelocityVm=measuredvelocity(referencevalue)2.1.2CurrentoutputadjustmentTheminimumvalue(i0%)andthemaximumvalue(i100%)ofthecurrentoutputatnormaloperatingconditionscanbeadjustedfrommenus2.2.2.and2.2.3.Theactualvaluesofthei0%andthei100%mustbemeas

7、uredwithanaccuratemilliammeterina4...20mAloop.i0%mustbeintherange3....12mA.Thefactorysettingis4mA.i100%mustbeintherange12....21mA.Thefactorysettingis20mA.2.1.3TimeconstantThetimeconstantvaluecanbesetinmenu2.2.4.Thisvaluerepresentsthetimeneededtodetect63

8、%ofasimulatedflowrateinstantaneouslyraisedfrom0to100%.Timeconstantrange:5,10,15,20,25,30,50m.4OperatingInstructionsDWM2000D2.2ElectronicsmodulechecksVariousparametersfromtheelectronicsmodulecanbevieweddirectlyfortroubleshootingpu