Designation:D7962−21StandardPracticeforDeterminationofMinimumImmersionDepthandAssessmentofTemperatureSensorMeasurementDrift1ThisstandardisissuedunderthefixeddesignationD7962;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thispracticedescribestwoproceduresforusewithtemperaturemeasurementdevices.Methodologyisdescribedfordeterminingminimumimmersiondepthforthermalsensors,inparticularRTDsorsimilartemperaturesensors.Includedisaprocedureforconsistentlypreparingareferencebathforthepurposeofmonitoringmeasurementdriftofthermalsensorssuchasliquid-in-glassordigitalcontactthermometers.1.2Thispracticefocusesontemperaturemeasurementdriftinalaboratory.Iftheuserrequiresgreatermeasurementaccuracy,thentheyshouldfollowtheinstructionsinPracticeE563.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.5Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2E563PracticeforPreparationandUseofanIce-PointBathasaReferenceTemperature3.Terminology3.1Definitions:3.1.1digitalcontactthermometer(DCT),n—anelectronicdeviceconsistingofadigitaldisplayandassociatedtemperature-sensingprobe.3.1.1.1Discussion—Thisdeviceconsistsofatemperaturesensorconnectedtoameasuringinstrument;thisinstrumentmeasuresthetemperature-depe...
