Product Code:SAE AMS1547
Title:Cleaner, Anodic, Electrolytic, Alkaline, for Steel, Tank Type
Issuing Committee:Ams J Aircraft Maintenance Chemicals And Materials Committee
Scope:This specification covers an electrolytic alkaline cleaner in the form of a water soluble powder. Primarily for removing grease, oil, and loose surface contamination from steel components by immersion in a solution of the cleaner at elevated temperature with anodically applied current. This cleaner should not be used on titanium components.【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】: