Ultrasonic Flow Meter

UltrasonicFlowMeterFHCIND.LIMITED1.BriefIntroductionTheUFLO2000SeriesultrasonicflowmeteristhenewestproductresearchedandmanufacturedbytheFHCIND.LIMITED.ThistypeflowmeterappliestheMSP430FG4618low-powerMCU,andselectsthenewestandadvancedintegratedcircuitsandmicroprocessorsmanufacturedbytheworld-famousmanufacturersofsemiconductorcomponents,suchasPhilips,Maxim,TI,Winbond,andXilinx.Thehardwaredesignissimple,whilethesoftwareprovidesaveryuserfriendlyinterfaceandmuchmorefunctions.Byapplyingthepatentlow-voltageandmulti-pulsebalancedtransmittingandreceiving,itcanincreasestheanti-frequencyinterferenceabilityinworkingtoachievemorestableandreliablemeasurement.Theultrasonicflowmetersaremainlyusedformeasuringwater、seawater、acidandalkali、foodoil、gas、coaloil、dieseloil、petroleum、alcohol、beeretc.thesesingleandpureliquidwhichcantransmitultrasonicbeam.2.PrincipleofMeasurementTheflowmeteroperatesbyalternatelytransmittingandreceivingafrequencymodulatedburstofsoundenergybetweenthetwotransducersandmeasuringthetransittimethatittakesforsoundtotravelbetweenthetransducers.Thedifferenceinthetransittimemeasuredisdirectlyandexactlyrelatedtothevelocityoftheliquidinthepipe,asshownflowing:downupTTTMDV•Δ×=θ2sinWhere,ΘistheanglebetweentheultrasonicbeamandflowdirectionMisthetransmittingtimesoftheultrasonicbeamDisthepipediameterTupisthetransmittingtimeofbeamfromupstreamsensortothedownstreamoneTdownisthetransmittingtimeofbeamfromdownstreamsensortotheupstreamoneΔT=Tup–Tdown3.Characteristics●Theself-adaptingperformanceofsignalreceivingcircuitsensurethattheusercaneasilyoperatetheinstrumentwithoutanyadjustment.●Thebuilt-inrechargeableNi-Hbatterycanworkcontinuouslyformorethan12hourswithoutrecharge.●Themeasuringperformanceisgoodinsewers,formostofthesewagepipesthemeasurementisstableandreliable.●TheparametersofflowmeterinworkingcanbeintotheFLASHmemoryofmachine,thusdonotworrythelossofparameters.Thesolidifiedparameterscanbetransferredoutautomaticallybychoosingthepower-ontime.●Hardwaremodulardesign.Therearemotherboardmodule,4-20mAoutputmodule,pulseoutputmodule,theprintermodule,parallelportkeyboardanddisplaymodule,keyboarddisplaymodule,userscanchooseaccordingtoactualneeds.●Parallelinterfacewithakeyboard,monitor,connectingtothedisplaycomponentmaybecomposedofthesimpleflowmeter.●Havethefunctionofdeterminingthetypeofliquidaccordingtotheflowvelocity.4.TechnicalParametersTypesPortableTypeHandholdTypeFixedTypeMeasuringPrincipleWhentheultrasonicbeamistransmittingintheliquid,itstransmittimeisproportionaltotheliquidflow.ApplicationForcontinuouslymeasuringtheflowofmostclear,singleandpureliquidwhichdonothavelargeconsistencesuspendedmatterorbubbles.LinearityBetterthan0.5%AccuracyBetterthan1.0%RepeatabilityBetterthan0.2%VelocityRange0～±32m/sPipeMaterialsSteel、stainlesssteel、castiron、PVC、cementpipeandotherpipeswhosematerialsareclose.LinerareOptional（therecannotbetheinterspacebetweenthelinerandthepipeexine)PipeSizeSmodelsensor(withmagnetism:15-100mmMmodelsensor(withmagnetism:50-700mmLmodelsensor(nomagnetism:300-6000mmSensorInstallationMethodClamp-onMeasuredLiquidwater、seawater、acidandalkali、foodoil、gas、coaloil、dieseloil、petroleum、alcohol、beeretc.thesesingleandpureliquidwhichcantransmitultrasonicbeamAmbientTemperatureConvertor：-10-70℃，TemperatureFluidTemperatureNormalsensor：-30~+80℃Hightemperaturesensor：-30~+160℃（onlyforSmodelandMmodel，nomagnetism）Display2linesdisplaytheinstantaneousflow,totalizeflowandsignalstate2×10LCDdisplay.Displaytheinstantaneousflowandthepositive、negative、nettotalizerflowandvelocityetc.SignalInputNosignalinputNosignalinput●4-20mAanalogsignalinput,accuracy0.1%,caninputpressure,liquidlevel,temperatureandsoon.●PT100platinumresistor.SignalOutputRS4854~20mAsignaloutput(Optional)RS485●4-20mAor0-20mAcurrentsignaloutput●OCToutput(pulsewidth6~1000ms，factorysettingis200ms)●relaycanputoutpositive,negative,netaccumulativepulseandthealarmsignal.●RS485outputIP:IP65,IP68CommunicationProtocolMODBUSProtocolPowerSupply220VAC(Standard)Battery:built-inNi-MHaccumulatorwhichcanworkformorethan12hourscontinuously.220VAC(Standard),24VDC(Optional)StraightpipelengthUpstream≥10D，Downstream≥5D，Lengthfrompumpexit≥30DIngressProtectionRatingsConvertor:IP65，Sensor:IP65Convertor:IP65，Sensor:IP65Convertor:IP65，Sensor:IP68ExplosionProofRatingNoexplosionproofNoexplosionproofEXdⅡBT4CrustMaterialsDie-castingaluminumPVCDie-castingaluminumbuilt-inwholethermalprinter，whichcanrealizein-timeandset-timeprint------------------OtherfunctionsSelf-diagnose:tellthecurrentworkingstatewhetheritisnormalornot.●Auto-memorythepositive,negative,netaccumulativeflowandheatofformer512days、formermonths,former10year;●Auto-memorythepower-onandpower-offtimeandtheflowofformer30times,andalsocanrealizeautoandmanualadding;●canreadoutthedatabyMODBUSprotocol，self-diagnosetotellthecurrentworkingstate.5Connection5.1Fixedtypeconnection:5.2Portabletypeandhandholdtypeconnection:6.Installationofsensor:6.1SensorlocationTheinstallationofultrasonicflowmeteristhemostsimpleandconvenientinalltheflowmeters,aslongasselectingasuitablemeasuringpoint,theninputtingthepipeparametersofthemeasuringpoint,atlastbindingthesensoronthepipeline.Inordertoensuretheaccuracy,shouldchoosethemeasuringpointwherethefluidisfluentanduniformlydistributed.Generally,shouldabidebythefollowingprinciples:●Choosethepipepositionfullyfilledwithfluid,suchastheverticalpipepositionorthehorizontalpositionfullyfilledwithfluid.●Measuringpointsshouldbeonthestraightpipewhichis10DNfromtheupstreamand5DNfromthedownstream,andnovalvesandotherinterference.●Thetemperatureandpressureininstallationpositionshouldbewithintherangeforsensorworking.●Totakeconditionofthefoulingsituationinthepipe,trybesttomeasureonthenonfoulingpipeline;ifcannotfindanonfoulingposition,shouldconsiderthefoulingastheliningtoachievethebestaccuracy.Shouldchoosethepipelinewhosematerialsisuniformandeasyforultrasonictransmission.Sensorinstallationexamples:6.2Clamp-onsensorinstallationBeforeinstalling,shouldchooseauniformanddensepartofthepipeline,andthencleartheareaofthesensorinstallation:togetridofrustpaint,rust-prooflayershouldalsoberemovedifhave,thenusingtheragdippedinacetoneoralcoholtowipegreaseanddust,andthenwipeadequateultrasonicspecialcouplingagentsurroundingthecentreofthesensorinstallationposition,andfinallybindthesensortightlyonthepipewall,andbetweenthesensorandthepipewallthereshouldnotbeemptybubblesandgravel.Notes:1.Twosensorsinstalledinthepipelinearetotheaxishorizontaldirection;2.Sensorinstallationdirections.Fivemodelsofclamp-onsensor:SensorSsensorMsensorLsensorHTSsensorHTMsensorBasicmodelTS-1TM-1TL-1THS-1THM-1SizerangeDN15-100mmDN50-1000mmDN300-6000mmDN15-100mmDN50-1000mmLiquid-30-90℃-30-90℃-30-90℃-30-160℃-30-160℃temperature6.2.1InstallationdistanceTheinstallationdistanceofclamp-onsensoristhedistancebetweenthemostinneredgeoftwosensors.Themethodofcalculatingdistanceistoinputtherequiredparametersintothemenu,thencheckthedatadisplayedinthewindow25,andlastinstallthesensorsaccordingtothisdata.6.2.2InstallationmethodsTherearetwowaystoinstallthesensors,calledVmethodandZmethod.MethodsV:Undernormalcircumstances,Vmethodisrelativelystandardinstallationmethod,becauseitiseasytouseandtheaccuracyisgood.Wheninstalling,twosensorsshouldbehorizontallyalign,itscenterlinelevelwiththepipeaxis.ThemeasurablediameterrangeisDN15mm-DN400mm.MethodsZ:Whenthepipeisverylargeorthereisliquidsuspendedsubstanceintheliquid,orthefoulingisverythick,ortheliningistoothick,usingVmethodinstallationthesignalisweak,andtheflowmetercannotwork,itneeduseZmethodinstallation.Zmethodischaracterizedbythedirecttransmissionofultrasoundinthepipeline,andthereisnoreflection(referredtoasmono-way),thesignalattenuationissmall.ThemeasuringrangeofZmethodisfrom100mmto6000mm.Inactualinstallation,ifthediameterismorethan200mmormeasuringthecastpipe,Zmethodispriortobeselected.(togetthebestsignal)7.PoweronWhentheUFLO2000seriesultrasonicflowmeterpoweron,themeterwillworkautomaticallyaccordingtothepreviousinputparametersbytheuser.Keyboardoperationdoesnotaffectthemeasurement,becauseUFLO2000applyuseofthetime-sharingtechnologytoachieveParallelprocessing.Measurement,computing,inputting,display,printing,serialportoperation,inputandoutputareallcalled"incident",andeveryincidentisindependentofeachother.Forexample,iftheuseramendtheDateandTime,itwillnotaffecttheothertaskswhichareunrelatedtothedateandtime..Whenitpoweron,ifthemachinehasbeeninstalled,theusercanseethatmachineisadjustingtheamplifiersfromtheM01window.Onthetopleftoftheindicator,therewillshowS1,S2,S3,S4thesefoursteps,thenthemachinewillgotothenormalmeasuringstateautomatically,whileonthetopleftofindicator,therewillshowthe"*R"word.Ifitisthefirsttimetouseoronanewinstallationpoint,itneedstoinputtheparametersofthenewinstallationpoint.Alloftheinputparameters,UFLO2000willrecordthemintheRAMtillthenextparameterschanging.Iftheuserchangetheparametersormovetheprobe,themachinewillre-calculateandadjustingautomatically,thenstarttoworkaccordingtonewparameters.Whenworking,UFLO2000cancompleteallthetasksatthesametime,ontheeveryindicationwindow,themeasuring,output,andothertaskswillworknormally.8.KeypadinstructionUFLO2000Ultrasonicflowmeterkeypadoperationasshownastherightchart,andtheinstructionasbellow:﹡0~9and.keysareusedtoinputnumbersormenunumber.﹡◄keyisleftbackspacekeyorusedtodeletethecharacterontheleft.﹡▲/+and▼/-keysareusedtogototheformermenuandnextmenu,andwheninputtingthenumbers,theyarealsousedas”+”/”-“keys.﹡MENU（Mkey）isusedforgettothemenu.Firstlyinputthiskey,theninputthe2-digitnumbers,youcangetintothemenucorrespondingtothenumber.﹡ENTisthekeyforanyinputtingorselection.Theotherfunctionistoentermodifystatebeforeinputtingtheparameters.SpeedyinputtingparametersIngeneralmeasurement,theparametersUFLO2000needtoinput:1.Pipediameter2.Pipewallthickness3.Pipematerials4.Liningmaterialparameters(Ifpossible,theparametersincludeliningthicknessandliningmaterialvelocity),5.Liquidtypes6.Sensortypes7.Sensorinstallationmethods1.PressMENU11enteredonthe11thwindow,inputthepipediameterthenpressENT2.Press▼/-enteredonthe12thwindow,inputthepipewallthicknessthenpressENT3.Press▼/-enteredonthe14thwindowENT,▲/+or▼/-SelectpipematerialsthenpressENT4.Press▼/-enteredonthe16thwindowENT,▲/+or▼/-SelectliningmaterialsthenpressENT5.Press▼/-enteredonthe20thwindowENT,▲/+or▼/-SelectfluidtypesthenpressENT6.Press▼/-enteredonthe23rdwindowENT,▲/+or▼/-SelectsensortypesthenpressENT7.Press▼/-enteredonthe24thwindowENT,▲/+or▼/-SelectinstallationmethodsthenpressENT8.Press▼/-enteredonthe25thwindow，accordingtotheinstallationdistanceandmethodshownaboveinstallthesensor(seechapterinstallationsection)9.PressMENU01Enterthe1stwindowdisplaymeasurementresults9.SizeoftheconvertorFHCIND.LIMITED