PT878超声波流量计原理与安装课件

超声波的概念与书语及超声波流量计测量的原理PT878液体超声波流量计的组成PT878液体超声波流量计安装考虑因素PT878液体超声波流量计的故障判断PT878液体超声波流量计的操作超声波的概念与书语及超声波流量计测量的原理超声波的概念与书语频率:次声波 0to20Hz声波 20Hzto20kHz(Humanhearing)超声波 >20kHz超声波的概念超声波的概念与书语超声波的概念传感器工作原理

传感器电能

机械能机械能

电能压电晶体的变化每个传感器能发射和接受发射接收传感器工作原理传感器发射接收超声波流量计原理：时差法传感器既发送信号又接收信号V

tup=超声波被流体减速

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LP

声信号传播时间逆流传播,tup顺流传播,tdn超声波流量计原理：时差法传感器既发送信号又接收VtupV

LP声速

c=

Ptavg,ttt2avg=

dnup+Q = Velocity

AreaQ = V

A体积流量tt

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×Δt超声波流量计原理：时差法VLP声速c=Ptavg,ttt2avg夹装式传感器

折射原理Snell’sLawc1 = 传感器内传播速度c2 = 管壁的传播速度c3 = 流体内的传播速度S = 传感器的间距c1

1c2

2

3c3LSW.T.Classic“clamp-on”approach夹装式传感器c1 = 传感器内传播速度c11c2PT878液体超声波流量计的组成1主机传感器信号线充电器红外线转RS232测厚探头偶合剂仪器包PT878液体超声波流量计的组成1主机PT878液体超声波流量计的组成21.OKS传感器夹具2.CRS和CPT传感器夹具3.CF-LP传感器夹具PT878液体超声波流量计的组成21.OKS传感器夹具所配传感器的特性及用途传感器代码型号C-RS402C-RS401C-PT116CF-LP23OKSSpecial(91)形状频率1.0MHz0.5MHz1.0MHz4.0MHz2.0MHz发射角度42423559.5传播时间17.320.327.55.85传播速度248424842674.63328使用温度-40to150C-40to150C-20to210C-40to230C-200to360C所配传感器的特性及用途传感器代码C-RSC-RSC-PTCF传感器选用原则1.温度要求.2.信号要求.导声较差的介质和大的管道选择低频探头.3.精度要求.频率越高精度越高.2寸以下一般用CF-LP探头.传感器选用原则1.温度要求.管道要求1.直管段要求:前10后5.即在传感器安装位置前10倍直径长度和后5倍的直径长度无弯头,阀门等引起流体扰动的装置.2.准确测量管经外径周长或直径.3.确定管道材质和壁厚及接触温度.4.确定是否有内衬及种类和厚度.管道要求1.直管段要求:前10后5.即在传感器安装位置前10介质要求1.已列出的介质直接选择2.未列出的介质需输入声速或选择跟踪窗口测试3.确定声速的目的是在窗口中央将信号检出..ENDOFTRANSMITGOODSNRWINDOW介质要求1.已列出的介质直接选择ENDOFTRANSMI安装方式1.根据管道大小和信号强度选择安装方式A.单声程:大管道和复杂应用B:双声程:首选方式,安装简单.C:多声程:小管道,信号特强.安装位置:水平管道3点和9点位置垂直管道必须是介质向上流安装方式1.根据管道大小和信号强度选择安装方式测量管道的直径和壁厚一般在传感器安装位置测量五个直径,平均值用超声波测厚仪测量八个点的厚度,取平均值测量管道的直径和壁厚一般在传感器安装位置测量五个直径,平均值单声程传感器的安装(侧视)单声程传感器的安装(侧视)单声程传感器的安装(侧视)单声程传感器的安装(侧视)单声程传感器的安装(侧视)单声程传感器的安装(侧视)单声程传感器的安装(侧视)单声程传感器的安装(侧视)单声程传感器的安装(俯视)单声程传感器的安装(俯视)单声程传感器的安装(俯视)单声程传感器的安装(俯视)双声程传感器的安装(侧视)双声程传感器的安装(侧视)双声程传感器的安装(侧视)双声程传感器的安装(侧视)双声程传感器的安装(侧视)双声程传感器的安装(侧视)双声程传感器的安装(俯视)双声程传感器的安装(俯视)双声程传感器的安装(俯视)双声程传感器的安装(俯视)传感器的安装传感器的安装传感器的安装传感器的安装PT878超声波流量计原理与安装课件校准1.标定后输入校验系数2.雷诺数修正.Re = 雷诺数#V = 流体流速ID = 内径

= 运动粘度 (ft2/secorm2/sec)校准1.标定后输入校验系数进行信号诊断介质充满管道后需检测的参数和信号流向是否正常信号强度SSup;SSdn声速SNSP波型等根据诊断参数调整有关输入参数得到准确结果进行信号诊断介质充满管道后需检测的参数和信号进行信号诊断信号强度SSup;SSdn50-55偏低可能不稳定55-60低一点,可以接受60-65好65-75非常好75-99信号饱和,分辨率可能降低0.电缆线开路100.控制器故障声速SNSP应在合理范围内.如水1500m/s左右进行信号诊断信号强度SSup;SSdn进行信号诊断错误代码E0:无错误E1:信号太低E2:声速错误E3:流速超出范围E4:信号质量太差E5:流速变化太大进行信号诊断错误代码FeaturesLarge,BacklitLCDSimplifiedKeypadGraphicalUserInterface(GUI)FasterUpdateRateImprovedPeakDetectionLarger,morepowerfulDataLoggerXML-formatSiteFilesFlashmemory–SimpleUpgradesPT878UltrasonicFlowmeterIrDA™-compatiblewirelessdatatransferUpto11hoursruntimeperchargeFeaturesPT878UltrasonicFlowmLCDDisplay240x200resolutionRoomfor1to4measurementsLargesignalwaveformdisplaysWhiteELBacklightPT878UltrasonicFlowmeterLCDDisplayPT878UltrasonicFlLCDDisplay240x200resolutionRoomfor1to4measurementsLargesignalwaveformdisplaysWhiteELBacklightPT878UltrasonicFlowmeterLCDDisplayPT878UltrasonicFlKeypadRubberizedkeysClickactionSimpleuniversallayout"Soft"FunctionKeysPT878UltrasonicFlowmeterKeypadPT878UltrasonicFlowmetGraphicalUserInterface(GUI)KeepsrelatedinformationtogetherAllchoicesvisibleatthesametimePT878UltrasonicFlowmeterGraphicalUserPT878UltrasonicGUIControlsMenusRelateditemsgroupedtogetherUse

tomovethroughchoicesUse

tochangemenusPressEnter

toselectPT878UltrasonicFlowmeterGUIControlsPT878UltrasonicFGUIControlsTabsQuickaccesstorelatedformsUse

toselectformPressEntertoopentheformPT878UltrasonicFlowmeterGUIControlsPT878UltrasonicFGUIControlsButtonsSelectsbetweenmutuallyexclusivechoicesUse

toselectbuttonPressEntertoactivatePT878UltrasonicFlowmeterGUIControlsPT878UltrasonicFPT878UltrasonicFlowmeterGUIControlsListsChoosefromallapplicablesettingsUse

tomoveoneitemUse

toscrollthelistPT878UltrasonicFlowmeterGUIPT878UltrasonicFlowmeterGUIControlsNumericEntryPressEntertobeginenteringdigitsPress

toeraseadigitPressEsctocancelandrestoreoriginalvaluePressEntertoacceptthenewvalueValuescanbeenteredordisplayedineitherMetricorEnglishunitswithouthavingtochangemeterdefaultsPT878UltrasonicFlowmeterGUIPT878UltrasonicFlowmeterGUIControlsCheckBoxesUsedtoturnanoption:On

Off

PressEntertotogglePT878UltrasonicFlowmeterGUIGUIControlsFunctionKeysChangeaccordingtoformormenuactivePressF1,F2,orF3

toselectPT878UltrasonicFlowmeterGUIControlsPT878UltrasonicFGUIControlsLocale-SpecificChangedate,time,anddecimalformatsforlocalcustom:MM/DD/YYYYDD-MM-YYYYYYYY-MM-DD11:59PM23:59123.45123,45PT878UltrasonicFlowmeterGUIControlsPT878UltrasonicFDataLogger1Megabytestorage>100,000recordsFrom1to12itemsperlogMultiplelogscanrunsimultaneouslyLogintervalfrom1secondto99minutesProgrammableStartandEndDate/TimeCyclicLogsErrorlogsPT878UltrasonicFlowmeterDataLoggerPT878UltrasonicFlFlashMemoryInstallnewprograminminutesoverIRNoEPROMstochangePT878UltrasonicFlowmeterFlashMemoryPT878UltrasonicFIrDA

-CompatibleWirelessCommunicationsInfrareddatatransferUpto115KbpsUpto1meterrange"Drag&Drop"filetransfersAutomaticNosettingsNocableadaptersrequiredPT878UltrasonicFlowmeterIrDA-CompatibleWirelessPT8BatteryNiMHrechargeable9to11hourruntime(longerthanNiCd)6hourrechargeNoneofthememoryproblemsassociatedwithNiCdFewerchargecyclesthanNiCdNiCdperformsbetterincoldNiCdordisposableAAalkalinecellscanbeusedinsteadofNiMHPT878UltrasonicFlowmeterBatteryPT878UltrasonicFlowmeBatteryContinuousbatterylevelgaugeSimpleiconindicateschargeUniversalcharger100-250VACPT878UltrasonicFlowmeterBatteryPT878UltrasonicFlowmeBatteryRuntimeupto11hours,dependingonfeaturesselected.Runtimeisreducedby:ProlongeduseofthebacklightLoop-powered4-20mAtransmittersHighresistanceloadson4-20mAoutputRuntimeisincreasedby:UsingSleepmodePT878UltrasonicFlowmeterBatteryPT878UltrasonicFlowmePT878UltrasonicFlowmeterEnvironmentalMeetsIP67ratingWithstandssubmersioninwaterDurablepolymer"boot"PreventsdamageifdroppedIntegratedwirestandPT878UltrasonicFlowmeterEnviPT878UltrasonicFlowmeterMeterSetupSelectUnitsSelectTransducerSelectPipeSelectLiningSelectFluidAdjustPathCorrectionFactorsSavetoaSitePT878UltrasonicFlowmeterMetePT878UltrasonicFlowmeterSelectUnitsThePT878candefaulttoeitherMetricorEnglishunits.FromtheMetermenu,selectUnits.PressOKtousethenewsettings.PT878UltrasonicFlowmeterSelePT878UltrasonicFlowmeterSelectTransducerSelectWettedorClamp-onChooseTransducerfromListListonlyshowsapplicabletransducersAllparametersfilledinautomaticallyChoose"SPECIAL"toentercustomerparametersAllowseachparametertobespecifiedPT878UltrasonicFlowmeterSelePT878UltrasonicFlowmeterSelectPipeSelectPipeMaterialfromListPipeSoundSpeedautomaticallyfilledinSelect"OTHER"forunlistedmaterialEnterSoundSpeedEnterDimensionsOuterDiameter(OD)orCircumference(ODxPI)WallthicknessPT878UltrasonicFlowmeterSelePT878UltrasonicFlowmeterSelectPipeIfpipematerialhasaschedule,IDcanbeusedtoautomaticallyenterdimensions.UsesANSI(English)orDIN(metric)schedule.ScheduleMaterials:StainlessSteelCarbonSteelCastIronPVCCPVCPT878UltrasonicFlowmeterSelePT878UltrasonicFlowmeterSelectLiningChooseliningmaterialfromlist,or"Other"tospecifyLiningoptionisnotavailablewhenusingWettedtransducersPT878UltrasonicFlowmeterSelePT878UltrasonicFlowmeterSelectFluidEnable/DisableTrackingWindowsUseforfluidswithunknownorhighlyvariablesoundspeedSpecifyminimumandmaximumsoundspeedChoosefluidfromlistor"Other"forunlistedfluidIffluidnotlisted,specifythenominalsoundspeedonlyPT878UltrasonicFlowmeterSelePT878UltrasonicFlowmeterSelectFluidForEnergyapplicationswithwaterasfluid,specifythe%GlycolconcentrationPT878UltrasonicFlowmeterSeleAdjustPathForclamp-on,PathlengthPandAxiallengthLareautomaticallycalculated.Selectthenumberoftraverses.Spacingisautomaticallyrecalculated.Spacingcanbechangedbyenteringanewvalue.PT878UltrasonicFlowmeterAdjustPathPT878UltrasonicFlFinishUpYourchangeswill

not

takeeffectuntilyou:Press

OK

tokeepallchangesPress

CANCEL

todiscardallchangesPT878UltrasonicFlowmeterFinishUpPT878UltrasonicFlowCorrectionFactorsReynoldsCorrectionUseasinglevalueforKineticViscosity(K/V).TableoptionisnotavailablePT878UltrasonicFlowmeterCorrectionFactorsPT878UltrasCorrectionFactorsK-FactorCorrectionUseasinglevalueforK-FactormultiplierUseaTabletorelateK-Factortoanothermeasure.OnlyVelocitycanbeusedtointerpolatetheK-Factor.PT878UltrasonicFlowmeterCorrectionFactorsPT878UltrasSavetoaSiteFileTokeepthenewsettings,youmustsavethemtoaSiteFile:Choose"SaveNow"toreplacethesettingsinthecurrentsite.Choose"Manager"tocreateanewsite.PT878UltrasonicFlowmeterSavetoaSiteFilePT878UltraSiteManagerUsetheSiteManagerto:Savesettingstoanewsite.Useandexistingsite.Deletesites.Renamesites.PrintorTransfersites.PT878UltrasonicFlowmeterSiteManagerPT878UltrasonicFSiteManagerOpentheSiteManagermenubypressing

Menu,

Enter.ChooseSaveAstonamethesiteandstoreit.PT878UltrasonicFlowmeterSiteManagerPT878UltrasonicFSiteManagerEnterafilenameofupto8characters:Usearrowstomovearoundthegrid.Press

Enter

toselectthecharacter.Use

Delete

toeraseacharacter.Press

OK

whendone.Hint:AdescriptiveSiteMessagecanbeenteredfromtheSiteMenuPT878UltrasonicFlowmeterSiteManagerHint:AdescriptiSiteFilesUpto32sitesstoredinPT878Canbetransferredto/fromPCforunlimitedcapacitySoftwareversionsneedtomatchtoensurecompatibilityXML*FormatFilesprintasshownhere

SomeoutputsarecodedSet-upsarebestviewedthroughameterSiteFilesshouldnotbeeditedwithaPCorlaptop*eXtensibleMarkupLanguage

<PipeMaterial='5'Sound_Speed='3120.0'