【英文标准名称】:StandardSpecificationandTemperature-ElectromotiveForce(EMF)TablesforStandardizedThermocouples
【原文标准名称】:标准化热电偶用标准规范和温度-电动势(EMF)图表
【标准号】:ASTME230-2003
【标准状态】:现行
【国别】:
【发布日期】:2003
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:E20.04
【标准类型】:(Specification)
【标准水平】:()
【中文主题词】:温度;温度测量;表;热电偶;温差电器件
【英文主题词】:emfcomputation;compensatingextensionwire;inversepolynomial;polynomialcoefficient;referencetables;thermocouple;thermocoupleextensionwire;thermoelement;uppertemperaturelimit
【摘要】:1.1Thisspecificationcontainsreferencetables(Tables8-23)thatgivetemperature-electromotiveforce(emf)relationshipsforTypesB,E,J,K,N,R,S,andTthermocouples.Thesearethethermocoupletypesmostcommonlyusedinindustry.1.2Alsoincludedarelistsofstandardandspecialtolerancesoninitialvaluesofemfversustemperatureforthermocouples(Table1),thermocoupleextensionwires(Table2),andcompensatingextensionwiresforthermocouples(Table3).1.3Tables4-5,includedherein,givedataoninsulationcolorcodingforthermocoupleandthermocoupleextensionwiresascustomarilyusedintheUnitedStates.1.4Recommendationsregardinguppertemperaturelimitsforthethermocoupletypesreferredtoin1.1aregiveninTable6.1.5Tables24-43givetemperature-emfdataforsingle-legthermoelementsreferencedtoplatinum(NISTPt67).ThetablesincludevaluesforTypesBP,BN,JP,JN,KP(sameasEP),KN,NP,NN,TP,andTN(sameasEN).1.6TablesforTypesRP,RN,SP,andSNthermoelementsarenotincludedsince,nominally,Tables18-21representthethermoelectricpropertiesofTypeRPandSPthermoelementsreferencedtopureplatinum.1.7PolynomialcoefficientsthatmaybeusedforcomputationofthermocoupleemfasafunctionoftemperaturearegiveninTable7.Coefficientsfortheemfofeachthermocouplepairaswellasfortheemfofindividualthermoelementsversusplatinumareincluded.1.8CoefficientsforsetsofinversepolynomialsaregiveninTable44.Thesemaybeusedforcomputingacloseapproximationoftemperature(oC)asafunctionofthermocoupleemf.Inversefunctionsareprovidedonlyforthermocouplepairsandarevalidonlyovertheemfrangesspecified.1.9Thisspecificationisintendedtodefinethethermoelectricpropertiesofmaterialsthatconformtotherelationshipspresentedinthetablesofthisstandardandbeartheletterdesignationscontainedherein.Topicssuchasorderinginformation,physicalandmechanicalproperties,workmanship,testing,andmarkingarenotaddressedinthisspecification.TheuserisreferredtospecificstandardssuchasSpecificationsE235,E574,E585,E608,E1159,orE1223,asappropriate,forguidanceintheseareas.1.10Thetemperature-emfdatainthisspecificationareintendedforindustrialandlaboratoryuse.
【中国标准分类号】:N11
【国际标准分类号】:17_200_20
【页数】:192P.;A4
【正文语种】: