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1、INTERNATIONA1.STANDARDISO3455editionThrd2021-01HydrometryCa1.ibrationofcurrentmetersinstraightopentanksHydromtrieEta1.onnagedesmou1.inetsenbassinsdecouvertsrecti1.ignesOISO2021COPYRIGHTPROTECTEDDOCUMENTISO2021岫rkdea/山thUcdOthcnviscjftc三orrtmcehDVBiwixuioiti08phnn11UatiocBhrhotocp)Mng,ptbcatonposting
2、ontheinternetoranintranet,withoutpriorwrittenpermission.PermissioncanherequestedfromeitherISOattheaddressbe1.oworIS.*.*97.2 Ca1.ibrationofe1.ectromagneticcurrent-meters10Mountingtheforca1.ibrationcurrent-meter7.2.3 Numberofca1.ibrationpoints107.2.4 Performanceofca1.ibration-117.2.6 Dataana1.ysisofre
3、su1.ts7.3 Ca1.ibrationofacousticcurrent-metersforpointve1.ocitymeasurement111.1.1 forca1.ibration11MountingtheoIacousticcurrent-meter7.3.4 Dataana1.ysis127.3.5 Presentationofresu1.ts12ForewordISO(theInternationa1.OrganizationforStandardization)isawor1.dwidefederationofnationa1.standardsttiugh(ISOtnn
4、hnfaaibif1.iniKhMcekWpraptafigbodyhitttCTOtidaiibtanddjttet4OK)Whtdbkanteh0mitteehasbeenestab1.ishedhastherighttoberepresentedonthatcommittee.Internationa1.organizations,governmenta1.andnon-governmenta1.,in1.iaisonwithISO,a1.sotakepartinthework.ISOco1.1.aboratesc1.ose1.ywiththee1.ectrotechnica1.stan
5、dardization.Internationa1.E1.ectrotechnica1.Commission(IEC)ona1.1.mattersofTheproceduresusedtodeve1.opthisdocumentandthoseintendedforitsfurthermaintenancearc蜩魄雌of1.SO1.ECtM1.如。t制蝴麻肝的蝴ferrdance圳htheeditoria1.ru1.esofthe1SOIECDirectives,Part2(seewwwjso.org/dncc1.ives).ReionrigMs.d隘的n捌虱福破脚8ns曲F球阴R瞄晒啦H曲
6、oc1.三&鼠犍赧.subjectofanypatentrightsidenti11edduringthedeve1.opmentCfthd4mwUw川beintheIntroductionand/orontheISO1.istofpatentdec1.arationsreceived(seewwsv.iso.org/pa1.ents).Anytradeusedinthisconstitutenameendorsement.documentisinformationgivenfortheconvenienceofusersanddoesnotForanexp1.anationofthevo1.
7、untarynatureofstandards,themeaningofISOspecifictermsand哪蝴徐醐fi%ticnc。曲福P奥丧融Mth2阍辆解出tior研R箝2崛SOisoforeword.htn1.TfBM锹确中惶ftft三f!efcmmitteeISO/TC113,HydrometrySubcommitteeSC5rThisthirdeditioncance1.sandrep1.acesthesecondedition(ISO3455:2007),whichhasbeentechnica1.1.yrevised.Themainchangescomparedtothepr
8、eriouseditionsareasfo1.1.ows: asubc1.auseforca1.ibrationofacousticcurrent-metersforpointve1.ocitymeasurementhasbeenadded; c1.ausesreferringtooutdatedtrackingsystems1.iketracksystemsusingtoothbe1.tshavebeenremoved; c1.ttIratwi1.xnyrfcnrtMttdhtedtechniquefordataacquisition1.ikestripchartrecorderormagn
9、etic thec1.auseforcomputerizeddataacquisitionandprocessingsystemhasbeenremoved; thec1.ausediscussingtheEppereffecthasbeenremoved.AnyfeedbackorquestionsonthisdocumentShouidbediFeuUoIheus*nationa1.standardsbody.Acomp1.ete1.istingofthesebodiescanbefoundatwww.iso.org/members.htm1.HydrometryCa1.ibrationo
10、fcurrent-metersinstraightopentanks1 Scopercquireshydrometriccurrent-metersthroughpointVe1.ocityameasurenientofowinginc1.udesmeasuring2 NormativereferencesconstitutesrequirementSIateStcditiondocument.referencedreferences,(1.nc1.udingamendments)app1.ies.app1.ies.ISO2537,Hydrometryr-Rotating-e1.ementcu
11、rrent-metersmeasurement(GUM:1995)3 TermsanddefinitionsISOandIECmaintaintermino1.ogica1.databasesforUSeinStiandardiZatiOnatthefo1.1.owingaddresses:E1.ectroPedia:CaIibrati1.hpJ*wwUecoPedii4.1Statementoftheprincip1.eve1.ocitycurrent-meter,ratethisrevo1.utionthecurrent-meterHiountedtheve1.ocitydirect1.yandindicatedCM*ki研林n3*w3即mu1.a(e)rthespeedtoknowtheerrorinmeasurement1ISO2021-A1.1.rightsresenedThisdocumentspecifiesaca1.ibrati
