EURAMETProjectN°1098ComparisonoftherealisationsoftheITS-90overtherange83.8058Kto692.677KTheEURAMETprojectN°1098isorganisedusingthesametechnicalprotocolusedintheEUROMETcomparisonP.5521.SCOPETheaimofthisintercomparisonismainlytocomparethenationalhighestaccuracyrealizationofITS-90betweentherangefromtriplepointofAr(83.8058K)tothefreezingpointofZn(692.677K)usinglong-stemSPRTastheparticipatinglaboratoriesroutinelyestablishthemandatthesametimetosupporttheCalibrationandMeasurementCapabilities(CMC)entriesoftheparticipatinglaboratories.Eachlaboratory,therefore,mustcalibrate(atleast)oneSPRTaccordingitscustomaryprocess.2.PARTICIPANTSLaboratoryAddressPersonresponsiblefortheintercomparisonDirectoryofMeasuresandPreciousMetalsMikeAlasa1411000Belgrade,SerbiaMsSlavicaSimicPhone:00381112024425e-mail:temperature@szmdm.sv.gov.yuHellenicInstituteofMetrology80,MihalakopoulouStr.10192AthensGreeceDr.MittiadisAnagnostouPhone:003017713156Fax:003017716305e-mail:miltiadis.anagnostou@eim.org.grNationalInstituteforStandardsTersaSt.AlAhramElGizaP.O.Box:136codeno.:12211ElGizaEgyptDr.KhalidAliPhone:Fax:0020233867451e-mail:khalidali@nis.sci.egTUBITAKUlusalMetrolojiEnstitusuTUBITAKUME,P.O.Box54,41470Gebze-KocaeliAliyeKartalDoğanPhone+902626795000Fax+90226795001e-mail:aliye.kartal@ume.tubitak.gov.trTable1–ListofParticipants3.TRANSFERSTANDARDTwoStandardPlatiniumResistanceThermometer(SPRT)aresuppliedasthecirculatedtransferstandardsbypilotlaboratory.Thesecondoneiskeptforsafety.TheSPRTsusedforthiscomparisonwillbeselectedbythepilotduetotheirverygoodstability.TheSPRTssupportingthecomparisonswillbecarefullyselectedbythepilotlaboratoriespayingaspecialattentiontothestabilityoftheinstrument.TheSPRTsareexpectedtobequartzsheathed25OhmsLong-StemPlatinumResistanceThermometers.Thethermometerisveryfragilesoitmustbehandledwithextremecare.Whennotinuse,itshouldbestoredinasafeplaceinthegrooveoftheprotectingfoam.TheSPRTwillbehand-carriedfromUMEtoNISandviseversa.4.PROVISIONALSCHEDULEItisanticipatedthatthecomparisonwillbestartedby1March,2009.Atthebeginningofthecirculation,UMEwillmakethefirstcalibrationwiththeSPRT.Foragivenlaboratory,thetimeallowedforacalibration(overtherange83.8058Kto692.677K)isapproximatelyestimatedtobe6weeks.Thetravellingtimebetweentwoinstitutescouldberatedat2weeks.PeriodTaskLab.1February-15May,2009Selectionandcalibrationof2SPRTsUMEStartingthecirculationofaSPRT15August-15October,2009CalibrationofthecirculatingSPRTNIS15October–8November,2009CalibrationofthecirculatingSPRTUME10November2009–10January,2010CalibrationofthecirculatingSPRTDirectoryofMeasuresandPreciousMetals15January–15March,2010CalibrationofthecirculatingSPRTEIM20March–10April,2010CalibrationofthecirculatingSPRTUMETable2.Scheduleofcomparison4.MEASUREMENTSThegoalofthecomparisonistocomparethenationalhighestaccuracyrealizationofITS-90astheparticipatinglaboratoriesroutinelyestablishthem.Eachlaboratory,therefore,mustcalibrate(atleast)oneSPRTaccordingitscustomaryprocess..UponreceiptoftheSPRT,theparticipatedlaboratorymustinspectthedevicesfordamage.Thenthehostlaboratorymustcompleteandforward(bye-mailorfax)theattached“ArtefactReceivedForm”topilottoreporttheconditionoftheartefact.Ifthereisdamage,thepilotlaboratorywillgiveinstructionsonhowtoproceed.CalibratetheSPRTatallofthefixedpointsintherangeofcomparison,i.e.,measurementsatTPW,Zn,TPW,Sn,TPW,In,TPW...