Designation:E1652−15StandardSpecificationforMagnesiumOxideandAluminumOxidePowderandCrushableInsulatorsUsedintheManufactureofBaseMetalThermocouples,Metal-SheathedPlatinumResistanceThermometers,andNobleMetalThermocouples1ThisstandardisissuedunderthefixeddesignationE1652;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisspecificationcoverstherequirementsformagne-siumoxide(MgO)andaluminumoxide(Al2O3)powdersandcrushableinsulatorsusedtomanufacturebasemetalthermocouples,metal-sheathedplatinumresistancethermom-eters(PRTs),noblemetalthermocouples,andtheirrespectivecables.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2B329TestMethodforApparentDensityofMetalPowdersandCompoundsUsingtheScottVolumeterC809TestMethodsforChemical,MassSpectrometric,andSpectrochemicalAnalysisofNuclear-GradeAluminumOxideandAluminumOxide-BoronCarbideCompositePelletsC832TestMethodofMeasuringThermalExpansionandCreepofRefractoriesUnderLoadD2766TestMethodforSpecificHeatofLiquidsandSolidsE228TestMethodforLinearThermalExpansionofSolidMaterialsWithaPush-RodDilatometerE235SpecificationforThermocouples,Sheathed,TypeKandTypeN,forNuclearorforOtherHigh-ReliabilityApplicationsE344TerminologyRelatingtoThermometryandHydrom-etryE585/E585MSpecificationforCompactedMineral-Insulated,Metal-Sheathed,BaseMetalThermocoupleCableE1137/E1137MSpecificationforIndustrialPlatinumResis-tanceThermometersE1225TestMethodforThermalConductivityofSolidsUsingtheGuarded-Comparative-Longit...
