1、INTERNATIONA1.STANDARDISO4266-4editionSecond2023-07PetrO加Umand1.iquidPetrO加UmproductsMeasurementof1.eve1.andtemperatureinstoragetanksbyautomaticmethods一psyirementoftemperatureinatmospherictanksParo1.eCtproduitsptro1.iersIiquidesMesuragcduniveauetdeIatemperaturedans1.esreservoirsdestockageparmethodes
2、automatiques一Partie4:MesuragedeIatemperaturedansIeSreservoirsapressionatmospheriqueReferencenumberISO426642023(E)COPYRIGHTPROTECTEDDOCUMENTISO2023IUirhM*hedbdi1.iUedotherwiseupdhi.o啪InPSd1.Mc;GeatrOn1.Wsunmaytheinternetoranintranet,withoutpriorwrittenpermission.PermissioncanberequestedfromeitherISOa
3、ttheaddressbe1.oworISOsmemberbodyinthecountr)oftherequester.f),WVfifiU81.andonnet8CH-1214Vernier,GenevaPhone：M1.22749O1.11觥ftte:丽丽BQrgPub1.ishedinSwitzer1.andContentsForewordCa1.ibrationprior.45.3.5Variab1.e-IcngthATTsOvera1.1.accuracyAveraging8.3.5Variab1.e-IengthtemperaturetcmperatureCus1.odyca1.i
4、bra1.ionpurposesIransferCaIibrationiiiPageScope1Normativereferences1Termsanddefinitions1Precautions24.1 Safetyprecautions二4.2 Equipmentprecautions2Accuracy35.1 Genera1.352Int1.1.nS1.CerrorOfT,Ts.3.12343333Genera1.toinsta1.1.ationATTcaIibratedasasystem.4ATTca1.ibratedbycomponents4Mu1.tip1.e-point5.3.
5、6Uncertaintyofthereference45.4Errorcausedbyinsta1.1.ationandoperatingconditions45.5.1 Genera1.5.5.2 UseofATTforfisca1./custodytransferpurposes5Se1.ectionofATTsS61.一.56.2ATTsforfisca1./CUStOdytransferpurposes6DescriptionofATTequipment.67.1 Genera1.67.2 E1.ectrica1.temperaturee1.ements6I1一Insta1.Iatio
6、nofATTs78.1Genera1.8.2Sing1.e-point(spot)temperaturee1.ements.78.3.1 Genera1.temperaturee1.ements8.3.2 Upper,midd1.eand1.owertemperaturee1.ements78.3.3 Mu1.tip1.e-pointtemperaturee1.ements78.3.4 Mid-1.eve1.RTDdemente1.ements8.3.6 Moveab1.espottemperaturee1.ement88.4Thermowe1.1.sfore1.ectronictempera
7、turee1.ements9Ca1.ibrationandfie1.dverificationofATTs119.1 Genera1.119.2 Ca1.ibrationofsing1.e-point,ormid-1.eve1.temperaturee1.ementATTsforfisca1./9.2.1 transferpriortoinsta1.1.ation9.2.2Initia1.fie1.dverification119.3 Ca1.ibrationofupper,midd1.eand1.owerormu1.tip1.e-pointATTsforfisca1./custody9.3.
8、1 purposespriortoinsta1.1.ation9.3.2Initia1.he1.dVer1.fiCat1.on129.4 9(!ibrationCa1.(ifrationvpriabh1.engrtf11Ifiifafifi1.cus1.DdyIransferpurpDses.139.4.2Initia1.fie1.dverification139.5 SUbSeqUentVer1.fiCat1.onOfATIs.a.st.).*.13狷：2cyofsubsetIuentverificationi3109.5.3Recordkeeping14Datacommunicationa
9、ndreceiving.一.14B1.bI1.OgraPh)15Forewordthrough(1.SOmittees.workofPreparingbody1.ntemationa1.Standardsisnorma1.1.ytechnica1.e1.ectrotechnica1.standardization.Internationa1.E1.ectrotechnica1.Commission(IEC)ona1.1.mattersofdescribedtypesofISO/IECDirectivesrShouIdbePartiCU1.ar,documentwasapprova1.accor
10、dancewiththeISO（八）patent(三).attcntion1.akcs1.hcnopossibi1.ityconcerningimp1.ementationvahdityapp1.icabi1.ityinvo1.vec1.aimedcautioncdavai1.ab1.cWWW0iwg/PaUHKdatcstinformation,Whichresponsib1.eidentifyinganypatentconstitutenameendorsement,documentisinformationgivenfortheconvenienceofusersanddoesnotex
11、pressionsre1.ated。伸nization(WTO)assessment,asinwe1.1.asinfomationBaierstoTradeadherenceseeThisdocumentfromprcparcdorbyTechnica1.ComnnttecSubcornmit1.eePetroIeumMeasurementOfPetrOIeUmfiIekrevised.secondeditioncance1.sandrep1.acesthefirstedition(ISO4266-4:2002),whichhasbeentechnica1.1.ywiththeintemper
12、ature;p1.ete1.istingquestionsbodiesthiscandocumentWWWTtestandardsbody.AISO2023-A1.1.rightsreservedISO(theInternationa1.OrganizationforStandardization)isawor1.dwidefederationofnationa1.StandarcKbodiesmemberbodies).TheEachmemberinterestedinsubjectforwhichcarriedoutcommitteehasbeenestab1.ishedhastherig
13、httoberepresentedonthatcommittee.Internationa1.organizations,governmenta1.andnon-ove11menta1.1.in1.iaisonwithISO,a1.sotakepartinthework.ISOco1.1.aboratesc1.ose1.ywiththeTheproceduresusedtodeve1.opthisdocumentandthoseintendedforitsfurthermaintenancearedifferentinthedocumentPart1.Innoted.ThiSthediffer
14、eddraftedincriteriaforeditoria1.ru1.esoftheISO/IECDirectives,Part2(seewww.iso.org/direc1.ives).ofdrawsISOtopositionthatthetheevidence,ofthisordocumentmayofanytheusepatentrightsinrespectthereof.Asofthedateofpub1.icationofthisdocument,ISOhadnotreceivednoticeof（八）PatCnt(三)whichmayberequiredtoimp1.ement
15、thisdocument.However,irnp1.cmcntersarcdatabasethatthisatmaythe.ISOsha1.1.behe1.dmayforobtainedfromtheora1.suchpatentrights.AnytradeusedinthisForanexp1.anationofthevo1.untarynatureOfstandards,themeaningofISOspecifictermsandtheWor1.dTradeconformityprincip1.estheTechnica1.about1.SO,s(TBT)1towww.iso.org
16、/iso/foreword.htm1.and1.ubricantswasnatura1.syntheticsources,ISO/TC28,SC2.andre1.atedproducts,andre1.atedproducts.ThisThemainchangesareasfo1.1.ows:4.3.2zithasin9.2,ponentverificationisoptiona1.,butverificationasA1.istofa1.1.partsintheISO4266seriescanbefoundontheISOwebsite.Anyfeedbackoroftheseonbefou
17、ndatshou1.ddirectedusers.Petro1.eumand1.iquidpetro1.eumproductsMeasurementof1.eve1.andtemperatureinstoragetanksbyautomaticmethods一Measurementoftemperatureinatmospherictanks1 Scopeapp1.kations.andverificationofautomatictankthermometers(ATTs)infisca1./CUStOdytransferReidvapourpressure1.essthan100kPa,s
18、toredinatmosphericstoragetanks.2 Normativereferencesconstitutesrequirements1.atesteditiondocument.referencedreferences,(i11c1.udingamendments)app1.ies.app1.ies.3 Termsanddefinitionsfo1.1.owingapp1.y.ISOOn1.inebrowsingp1.atform:avai1.ab1.eathHps:/ww*.iso=orobp3.1automatictankthermometerATTprecisionte
19、mperaturesensors,fie1.d-mountedknowntransmittersautoinatice1.ectronictemperaturetransmission.typica1.1.yreceiving/3.2resistancetemperaturedetectorRTDKey2red3orange4ye1.1.owgreenb1.uevio1.et9white10pink11b1.ack12f1.exib1.ehose13 mountingheight14 anchorweightFigure2Anexamp1.eofavariab1.e-1.engthRTDtem
20、peraturee1.ementinsta1.1.ationThennowe1.1.sextendingthroughthetankshe1.1.cannotbeusedonf1.oating-rooforpan-rooftankswmm丽摘areavai1.ab1.etosupportaveragingAdequatec1.earanceshou1.dbeprovidedbetweentheATTsensorassemb1.yandthethermowe1.1.forcaseRhtiMM陟rev*nC雅1.三P献除削a涮褊律做的秣Ci脚阳in翩meMenthethermowe1.1.andt
21、hesensorassemb1.y,thewe1.1.shou1.dbefi1.1.edwithheatconductivef1.uidandshou1.dprovidefortherma1.expansionofthefi1.1.ingf1.uid.Inaddition,baff1.esmaybefittedinthethermowe1.1.9Ca1.ibrationandfie1.dverificationofTTs9.1 Genera1.NOTEtemperaturethermometersaretemperaturepriore1.ementsinsta1.1.ation.Thetra
22、nsmittersnorna1.1.yfxcdznotautomaticNOTET(inc1.udingIheoftemperaturee1.ements,the9transmitter,andadequacy1.oca)remoteca1.ibradonandinsta1.1.ed.accuracymeasurementshou1.dperformedinaccordancewithISO4268.Theuncertaintyofthefie1.dca1.ibration9.2 Ca1.ibrationofsing1.e-point,ormid-1.eve1.temperaturee1.em
23、entTTsforfisca1./custodytransferpurposes9.2.1 Ca1.ibrationpriortoinsta1.1.ationPresupposcdfactory1.heca1.ibration1.aboratory),anATTistraccab1.ewaysappropriateinnationa1.standards,istemperahresascoveringnayoperatingca1.ibratedwithConstanttemperaUiresshou1.dbemeasredmoreb)A1.ternative1.y,theConiponent
24、s1.hebath.Separate1.y,separate1.yca1.ibrated.Measurethcrma1.rcsistanceof9.2.2theinitia1.fie1.dverification9.2.2.1 Verificationbycomponents9.2.2.1.1 Genera1.evenifthecomponentsareverifiedindividua1.1.y.9.2.2.1.2 Temperaturee1.ementtemperaturee1.ementthermometer4268.1.ower(overthermometerapproximate1.
25、yWhiChmm)e1.ementTheATTrinc1.udingthetemperaturee1.ement(三)rthetransmitterandthereadout,se1.ectedforfisca1./temperaturemeasurement,shou1.dmeetCa1.1.brationpresupposcdtank1Theprecisione1.ectronicca1.ibratedtoandfie1.dusedfordoprovideca1.ibrationadjustmentsinthefie1.d.ofthe2ThepurposetheproceduresinC1
26、ausetoverifythetheofthereadout)astheWhenanATTischeckedorca1.ibratedbymanua1.temperaturetncasuremenUthemanua1.temperaturereferenceshou1.dnotbeexceed0,1.TheATTcanbeca1.ibrated/verifiedeitherasasystemorbycomponents.Priortoinsta1.1.ation,sing1.e-pointormid-1.eve1.ATTsshou1.dbeca1.ibrated,undercontro1.1
27、edconditions(1.e.inthethatortestingreferenceforinoneofthetwotodescribeda)andb)be1.ow.Ita)TheTT(inc1.udingthetemperaturesensors,thetemperaturetransmitter/ConVerter,andthereadout)awho1.etheberange.Thebathbaths,atthreeorbyreferencethermometer(三)(see5.3.2fortherequiredaccuracy).thetemperaturee1.ementin
28、oftheATTmaybeuseprecisionresistors,orca1.ibrator(recent1.yca1.ibratedagainstareferencetraceab1.etoanationa1.standardsagency)toSimu1.ato-temperatureinputtothetemperaturetransmitterconverterandreadoutoftheATT(see5.3.3forrequiredaccuracy).9.2.2.1.3 ponents,however9.2.2.2isrequired,Theca1.ibratedportab1
29、ee1.ectronicthermometercanbeusedtoverifythemeasurementbytheis1.ocatedandmovetheaccordingISOupanddownthearangeofthedepth300theunti1.thetemperaturemeasuredisstab1.e.ThetemperaturemeasuredbytheRTDtemperatureSensorshou1.dagreeWiththetemperaturemeasuredbytheca1.ibratedportab1.ee1.ectronicthermometerwith
30、in0,4.9.2.2.1.4 TemperaturetransmitterTheATT.exc1.udingthetemperaturee1.ementcanbeverifiedbyusingatemperatureca1.ibrator国网TXMoReOy的i113the(K律帖BntghkcjdJfctXiff初thetemperatureequiva1.entoftheresistorswithin0,25ateachtemperature.9.2.2.2 VerificationasasystemAca1.ibratedportab1.ee1.ectronicthermometerm
31、aybeusedtoverifytheentireTT.SinceitmaynotbepnqibtatawpsItiatithaonthuiytB)mtutf1.1.osef1.tiM11ementfrem(ernminmynoWHhhhWQnt11ip1.etc1.y.Genera1.1.y,forambientstoragetanks,ifthesensinge1.ementoftheportab1.ee1.ectronicthermometercanbep1.acedwithin1mofthefixedtemperaturee1.ement,ca1.ibrationbyaportab1.
32、ee1.ectronicthermometershou1.dbeacceptab1.e.ThetemperaturereadbytheATTsystem(temperaturesensor,temperaturetransmitter/ConVerIorandreadout)shou1.dagreewiththetemperaturemeasuredbyarecent1.yca1.ibrated,portab1.ee1.ectronic9.3thermometerwithin0,5.Ca1.ibrationofupper,midd1.eand1.owerormu1.tip1.e-pointAT
33、Tsforfisca1./custodytransferpurposes9.3.1Ca1.ibrationpriortoinsta1.1.ationEachpoint(i.e.temperaUMsensinge1.ement)oftheATTshou1.dbecheckedfo1.1.owingtheca1.ibrationIotdure1.niticriifimdVerffiidatjonsing1.e-pointormid-1.eve1.ATTs(see5.3.4fortherequiredaccuracy).9.3.2.1 Verificationbycomponents9.3.2.1.
34、1 Genera1.9.3.2.1.2 ponents,however9.3.2.2isrequiredevenifthecomponentsareverifiedindividua1.1.y.9.3.2.1.3 Temperaturee1.ementUseaca1.ibratedportab1.ee1.ectronicthermometertoverifythemeasurementbythetemperatureQrniHitidBpttiyOQi)Ithriidreti1.RTDsttauftoditareandywtiie.If1.hctaatI1.n)meiersensor(ofan
35、w1.tip!eointTT)shou1.dagreewiththetemperaturemeasuredbytheca1.ibratedportab1.ee1.ectronicthermometerwithin0,4.9.3.2.1.4 TemperaturetransmitterTheATT,exc1.udingthetemperaturee1.ement,canbeverifiedbyusingatemperatureca1.ibrator(e.g.PJeeghgithenWifte1.rtedTthanIIhhPJfttirtr)tertp6hmUtTO/tureiirtImfarth
36、HHrtHmperaturetrimpenaturesshou1.dagreewiththetemperatureequiva1.entoftheresistorswithin0r25ateachtemperature.9.3.2.2 VerificationasasystemAca1.ibratedportab1.ee1.ectronicthermometermayheusedtoverifytheentireATT.Thetankshou1.dPPQtadi1.iivkwcryn60f1.yfui1.(viUif,hmpo11rtthee1.dire1.iqIsidjincrgec1.f1
37、cva1.KnkcperatureMfiMhnsneuthiyationriS!BQJddrtiThrmnQUafavpftc(1.xfMa!4ttuanQnbpfhppro1.tc1.ytBfi(mm)tiruntiiaudh4trationproceduredescribedin-9r2r1.forsing1.e-pointormid-1.eve1.ATTs9.4.2 Initia1.fie1.dverificationTheprocedureisusedtoverifyvariab1.e-1.engthaveragingTTswhichautomatica1.1.yse1.ectthe
38、1.ongest,thUy!auhroeds1.duidhHusta1.ttUfi11tfetheutinAT3hktemperature.Aca1.ibratedportab1.ee1.ectronicThetankshou1.dpreferab1.yhenear1.yfu1.1.,witha1.1.temperaturee1.ementssubmerged.Taketemperature300mm)unti1.thetemperatureisstab1.e.Manua1.1.yse1.ecteachtcniperaturee1.ement(citherbyasoftwareorhardwa
39、reswitch).Comparetheaveragetemperatureca1.cu1.atedfromtheappropriateportab1.e88P?F(Wi钥6制丽加山5网备口Sdout.averagetemperaturemeasuredbythetemperatureTheaveragetemperaturereadbytheATTsystemshou1.dagreewiththeaverageoftheappropriate9.4.3 5te*三哪面抽1fiEWSF泌他e1.ectronicthermometerwithin0.5.9.5.1 Genera1.Aregu1.
40、arverificationprogrammeshou1.dbeestab1.ishedforTTsusedinfisca1./custodytransfer.)1.ussninubnsxoBbAffi1stbfcHdrf1.drt3ttstoftat11iirt)bQ1.chofttorttowrifrdcringtihdbjiIirecedureiriaBafiirtdrertSinprevioussectiondependingontheapp1.ication(initia1.fie1.dverification).9.5.2 Frequencyofsubsequentverifica
41、tionATTsusedforfisca1./CUStodytransfermeasurementshou1.dbeverifiedonaregu1.arbasis.TheATTGhpuhtmidaH(WPeCted;P闻fHdrt出HibrariGtxVerifickigto1.erancehqwertrd1edu1.o(remtingbeextendedtoonceperyear.陇口胎QionS11f?arequirementthattheperformanceofATTsinfisca1./custodytransferis139.5.3 RecordkeepingFu1.1.reco
42、rdsshou1.dbekeptoftheinitia1.ca1.ibrationandtheperiodicverificationsofeachATTusedforAQ班IaxodycomR1.HrnicationandreceivingK忸湘Wi(三)g却凶F8E3W潟atii的I9pedfiCationofthecommunicationbetweentemperatureTheremotereadoutofanacceptab1.eATTmaybeusedforfisca1./CUStodytransferprovidingthattheWhoIedOCUment.inc1.udin
43、gtheremotereadout,comp1.ieswiththerequiredca1.ibrationto1.erancesgiveninQ315andtMtt能用出熊.襁8d0用PmentinCOmn由ndete11n火epv国&R的碧WPSd电Rrs蝴i哂thappropriate1.ongest,fu1.1.ysubmerged,variab1.e1.engthRTDorbyaveragingtheappropriatesubmergedspote1.ements.在6陲U1.htheeqW即酬Ci1.yUSUA帆崎碗和济砌?映据网图蚂MM三on1.e间的1.t画standardvo1.umes.TheATTshou1.dbedesignedandinsta1.1.edsuchthatdatatransmissionandreceivingshou1.d: notcompromisetheaccuracy
