ASTM E 2261-2003 用交流场测量技术检查焊缝的标准实施规范
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来源:标准资料网
【英文标准名称】:StandardPracticeforExaminationofWeldsUsingtheAlternatingCurrentFieldMeasurementTechnique
【原文标准名称】:用交流场测量技术检查焊缝的标准实施规范
【标准号】:ASTME2261-2003
【标准状态】:作废
【国别】:美国
【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(ASTM)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Alternatingcurrent;Alternatingfields;Currentmeasurement;Examinations;Fieldmeasurement;Welding;Welds
【摘要】:
【中国标准分类号】:J33
【国际标准分类号】:25_160_40
【页数】:13P;A4
【正文语种】:英语
基本信息
| 标准名称： | 民用航空器货舱和行李舱烟雾探测器最低性能要求 |
| 中标分类： |
航空、航天 >>
航空器及其附件 >>
生命保障系统与设备 |
| 发布日期： | 1994-10-31 |
| 实施日期： | 1995-01-01 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 1900-01-01 |
| 出版日期： | 1900-01-01 |
| 页数： | 6页 |
适用范围
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前言
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目录
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引用标准
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所属分类： 航空 航天 航空器及其附件 生命保障系统与设备
【英文标准名称】:StandardTestMethodforCalibrationofRefractoryMetalThermocouplesUsingaRadiationThermometer
【原文标准名称】:用辐射温度计校准耐火金属热电偶的标准试验方法
【标准号】:ASTME452-2002(2007)
【标准状态】:现行
【国别】:
【发布日期】:2002
【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】:(TestMethod)
【标准水平】:()
【中文主题词】:校准;金属;温度计;耐熔的;温度测量;热电偶
【英文主题词】:high-temperaturecalibration;opticalpyrometer;radiationthermometer;refractorymetalthermocouple;thermocouple;thermocouplecalibration;vacuumfurnace
【摘要】:Thistestmethodisintendedtobeusedbywireproducersandthermocouplemanufacturersforcertificationofrefractorymetalthermocouples.Itisintendedtoprovideaconsistentmethodforcalibrationofrefractorymetalthermocouplesreferencedtoacalibratedradiationthermometer.Uncertaintyincalibrationandoperationoftheradiationthermometer,andproperconstructionanduseofthetestfurnaceareofprimaryimportance.Calibrationestablishesthetemperature-emfrelationshipforaparticularthermocoupleunderaspecifictemperatureandchemicalenvironment.However,duringhightemperaturecalibrationorapplicationatelevatedtemperaturesinvacuum,oxidizing,reducingorcontaminatingenvironments,anddependingontemperaturedistribution,localirreversiblechangesmayoccurintheSeebeckCoefficientofoneorboththermoelements.Iftheintroducedinhomogeneitiesaresignificant,theemffromthethermocouplewilldependonthedistributionoftemperaturebetweenthemeasuringandreferencejunctions.Athightemperatures,theaccuracyofrefractorymetalthermocouplesmaybelimitedbyelectricalshuntingerrorsthroughtheceramicinsulatorsofthethermocoupleassembly.Thiseffectmaybereducedbycarefulchoiceoftheinsulatormaterial,butaboveapproximately2100x00B0;C,theelectricalshuntingerrorsmaybesignificantevenforthebestinsulatorsavailable.1.1Thistestmethodcoversthecalibrationofrefractorymetalthermocouplesusingaradiationthermometerasthestandardinstrument.Thistestmethodisintendedforusewithtypesofthermocouplesthatcannotbeexposedtoanoxidizingatmosphere.Theseproceduresareappropriateforthermocouplecalibrationsattemperaturesabove800176;C(1472176;F).1.2Thecalibrationmethodisapplicabletothefollowingthermocoupleassemblies:1.2.1Type1-Bare-wirethermocoupleassembliesinwhichvacuumoraninertorreducinggasistheonlyelectricalinsulatingmediumbetweenthethermoelements.1.2.2Type2-Assembliesinwhichloosefittingceramicinsulatingpieces,suchassingle-boreordouble-boretubes,areplacedoverthethermoelements.1.2.3Type2A-Assembliesinwhichloosefittingceramicinsulatingpieces,suchassingle-boreordouble-boretubes,areplacedoverthethermoelements,permanentlyenclosedandsealedinaloosefittingmetalorceramictube.1.2.4Type3-Swagedassembliesinwhicharefractoryinsulatingpowderiscompressedaroundthethermoelementsandencasedinathin-walledtubeorsheathmadeofahighmeltingpointmetaloralloy.1.2.5Type4-Thermocoupleassembliesinwhichonethermoelementisintheshapeofaclosed-endprotectiontubeandtheotherthermoelementisasolidwireorrodthatiscoaxiallysupportedinsidetheclosed-endtube.Thespacebetweenthetwothermoelementscanbefilledwithaninertorreducinggas,orwithceramicinsulatingmaterials,orkeptundervacuum.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:N11
【国际标准分类号】:17_200_20
【页数】:14P.;A4
【正文语种】:
