ASTM F1895-1998(2004) 薄膜开关浸没的操作规程

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【英文标准名称】:PracticeforSubmersionofaMembraneSwitch
【原文标准名称】:薄膜开关浸没的操作规程
【标准号】:ASTMF1895-1998(2004)
【标准状态】:现行
【国别】:
【发布日期】:1998
【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】:F01.18
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:薄膜开关;浸渍;浸水;浸没
【英文主题词】:immersion;membraneswitch;submersion;waterimmersion
【摘要】:Thepresenceofwaterinsideamembraneswitchcanaffectitsmechanicaloperationorelectricalfunctionality,orboth.Electricalfailurecanresultasshortcircuitsduetosilvermigrationorexceedingthespecifiedresistanceduetooxidation.Thispracticeestablishesaproceduretoverifytheabilityofamembraneswitchtoresisttheentryofliquidinitselforafinishedproduct,orboth.Itisusefulinidentifyingdesigndeficiencies.Submersiontestingmaybedestructive,thereforeanysamplestestedshouldbeconsideredunfitforfutureuse.1.1Thispracticeestablishesproceduresforthesubmergingofamembraneswitchtoverifyresistancetoingressofaspecifiedliquid.1.2Thispracticecanalsobeusedtoverifytheabilityofamembraneswitchorgraphicslayertoactasaliquidsealforafinishedproduct.1.3Additionaltestmethodsorpracticescanbeincorporatedtoinvestigatespecificresultsorcapabilities.1.4ThispracticeisamodificationofNationalElectricalManufacturersAssoc.(NEMA)PublicationNumber250-1991Section6.10,whichisatestforsubmersionofafinishedproducthousing.1.5Thevaluesstatedininch-poundunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.
【中国标准分类号】:L59
【国际标准分类号】:31_220_20
【页数】:2P.;A4
【正文语种】: