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【英文标准名称】:StandardSpecificationforThermocouples,Sheathed,TypeKandTypeN,forNuclearorforOtherHigh-ReliabilityApplications
【原文标准名称】:核设施或其他高度可靠性设施用K型和N型铠装热电偶标准规范
【标准号】:ASTME235-2006
【标准状态】:现行
【国别】:
【发布日期】:2006
【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】:核能;核技术;可靠性;温度测量;热电偶;温差电敏器件
【英文主题词】:groundedjunction;high-reliabilitythermocouple;metal-sheathed;mineralinsulated;thermocouple;ungroundedjunction
【摘要】:1.1Thisspecificationcoverstherequirementsforsheathed,TypeKandNthermocouplesfornuclearservice.Dependingonsize,thesethermocouplesarenormallysuitableforoperatingtemperaturesto1652176;F(900176;C);specialconditionsofenvironmentandlifeexpectancymaypermittheiruseattemperaturesinexcessof2012176;F(1100176;C).Thisspecificationwaspreparedspecificallytodetailrequirementsforusingthistypeofsheathedthermocoupleinnuclearenvironments.Thisspecificationcanbeusedforsheathedthermocoupleswhicharerequiredforlaboratoryorgeneralcommercialapplicationswheretheenvironmentalconditionsexceednormalservicerequirements.Theintendeduseofasheathedthermocoupleinaspecificnuclearapplicationwillrequireevaluationbythepurchaserofthecompatibilityofthethermocouple,includingtheeffectofthetemperature,atmosphere,andintegratedneutronfluxonthematerialsandaccuracyofthethermoelementsintheproposedapplication.Thisspecificationdoesnotattempttoincludeallpossiblespecifications,standards,etc.,formaterialsthatmaybeusedassheathing,insulation,andthermocouplewiresforsheathed-typeconstruction.TherequirementsofthisspecificationincludeonlytheausteniticstainlesssteelsandotheralloysasallowedwithSpecificationE585/E585Mforsheathing,magnesiumoxideoraluminumoxideasinsulation,andTypeKandNthermocouplewiresforthermoelements(seeNote1).1.2GeneralDesignNominalsizesofthefinishedthermocouplesshallbe0.0400in.(1.016mm),0.0625in.(1.588mm),0.125in.(3.175mm),0.1875in.(4.763mm),or0.250in.(6.350mm).Sheathdimensionsandtolerancesforeachnominalsizeshallbeinaccordancewithand.Themeasuringjunctionstylesforthermocouplescoveredbythisspecificationareasfollows:1.2.1StyleG(grounded)Measuringjunctionelectricallyconnectedtoconductivesheaths,and1.2.2StyleU(ungrounded)Measuringjunctionsareelectricallyisolatedfromconductivesheathsandfromreferenceground.1.3Thevaluesstatedininch-poundunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:N11
【国际标准分类号】:17_200_20
【页数】:5P.;A4
【正文语种】: