DIN 43620 T.5-1986 带刀口接触的低压高功率熔断器.交流1000V的低压高功率熔断体
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【英文标准名称】:Low-voltagehigh-rupturingcapacityfuseswithbladecontacts;LVHRCfuselinksforAV1000V
【原文标准名称】:带刀口接触的低压高功率熔断器.交流1000V的低压高功率熔断体
【标准号】:DIN43620T.5-1986
【标准状态】:作废
【国别】:
【发布日期】:
【实施或试行日期】:
【发布单位】:德国标准化学会(DE-DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:
【中国标准分类号】:
【国际标准分类号】:
【页数】:
【正文语种】:
【英文标准名称】:StandardTestMethodsforLeakageMeasurementUsingtheMassSpectrometerLeakDetectororResidualGasAnalyzerintheHoodMode
【原文标准名称】:用罩式质谱探漏仪或残余气体分析仪作检漏测量的标准试验方法
【标准号】:ASTME1603-1999(2006)
【标准状态】:现行
【国别】:
【发布日期】:1999
【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】:E07.08
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:气体;罩泄漏试验;泄漏测量;质谱探漏仪;残余气体分析仪;罩式残余气体分析仪;使用氦质谱探漏仪;泄漏试验;氦泄漏试验;试验
【英文主题词】:heliumleaktest;heliummassspectrometerleaktest;hoodleaktest;leaktesting;massspectrometerleaktest
【摘要】:TestMethodA8212;Thistestmethodisthemostfrequentlyusedinleaktestingcomponents.Testingofcomponentsiscorrelatedtoastandardleak,andtheactualleakrateismeasured.Acceptanceisbasedonthemaximumsystemallowableleakage.Formostproductionneeds,acceptanceisbasedonacceptanceofpartsleakinglessthananestablishedleakagerate,whichwillensuresafeperformanceovertheprojectedlifeofthecomponent.Caremustbeexercisedtoensurethatlargesystemsarecalibratedwiththestandardleaklocatedatarepresentativeplaceonthetestvolume.Asthevolumetendstobelarge(>1m3)andthereareoftenlowconductancepathsinvolved,acheckoftheresponsetimeaswellassystemsensitivityshouldbemade.TestMethodB8212;Thistestmethodisusedfortestingvacuumsystemseitherasastepinthefinaltestofanewsystemorasamaintenancepracticeonequipmentusedformanufacturing,environmentaltest,orconditioningparts.AswithTestMethodA,theresponsetimeandasystemsensitivitycheckmayberequiredforlargevolumes.TestMethodC8212;ThistestmethodistobeusedonlywhenthereisnoconvenientmethodofconnectingtheLDtotheoutletofthehigh-vacuumpump.IfaheliumLDisusedandthehigh-vacuumpumpisanionpumporcryopump,leaktestingisbestaccomplishedduringtheroughingcycle,asthesepumpsleavearelativelyhighpercentageofheliuminthehigh-vacuumchamber.Thiswilllimitthemaximumsensitivitythatcanbeobtained.1.1Thesetestmethodscoverproceduresfortestingthesourcesofgasleakingattherateof4.41014moles/s(1109standard-cm3/sat0C)orgreater.Thesetestmethodsmaybeconductedonanyobjectthatcanbeevacuatedandtotheothersideofwhichheliumorothertracergasmaybeapplied.Theobjectmustbestructurallycapableofbeingevacuatedtopressuresof0.1Pa(approximately103torr).1.2Threetestmethodsaredescribed;1.2.1TestMethodAFortheobjectundertestcapableofbeingevacuated,buthavingnoinherentpumpingcapability.1.2.2TestMethodBFortheobjectundertestwithintegralpumpingcapability.1.2.3TestMethodCFortheobjectundertestasinTestMethodB,inwhichthevacuumpumpsoftheobjectundertestreplacethosenormallyusedintheleakdetector(LD).1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Thevaluesgiveninbracketsareforinformationonly.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:J04
【国际标准分类号】:
【页数】:5P.;A4
【正文语种】:
基本信息
标准名称: | 转8A侧架导框开距量规 |
中标分类: |
机械 >>
工艺装备 >>
量具与量仪 |
发布日期: | 1993-11-11 |
实施日期: | 1994-07-01 |
首发日期: | |
作废日期: | |
出版日期: | |
页数: | 3页 |
适用范围
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所属分类: 机械 工艺装备 量具与量仪