Designation:F1895−14StandardTestMethodforSubmersionofaMembraneSwitch1ThisstandardisissuedunderthefixeddesignationF1895;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodestablishesproceduresforthesub-mergingofamembraneswitchtoverifyresistancetoingressofaspecifiedliquid.1.2Thistestmethodcanalsobeusedtoverifytheabilityofamembraneswitchorgraphicslayertoactasaliquidsealforafinishedproduct.1.3Additionaltestmethodsorpracticescanbeincorporatedtoinvestigatespecificresultsorcapabilities.1.4ThistestmethodisamodificationofNationalElectricalManufacturersAssoc.(NEMA)Publication250-1991Section6.10,whichisatestforsubmersionofafinishedproducthousing.1.5Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2F1595PracticeforViewingConditionsforVisualInspectionofMembraneSwitchesF1663TestMethodforDeterminingtheCapacitanceofaMembraneSwitchF1680TestMethodforDeterminingCircuitResistanceofaMembraneSwitchF1689TestMethodforDeterminingtheInsulationResis-tanceofaMembraneSwitch2.2NationalElectricalManufacturersAssoc.:3(NEMA)Publication250-19913.Terminology3.1Definitions:3.1.1membraneswitch—Amomentaryswitchingdeviceinwhichatleastonecontactison,ormadeof,aflexiblesubstrate.3.1.2specifiedresistance—maximumallowableresistanceasmeasuredbetweentwoterminationswhoseinternalswitchcontacts,whenheldclosed,completeacircuit.3.1.3silvermigration—growthoffinecrystalsbetweensilv...
