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【英文标准名称】:StandardMethodsforGasFlowResistanceTestingofFiltrationMedia
【原文标准名称】:过滤介质耐气体流动试验的标准方法
【标准号】:ASTMF778-1988(2007)
【标准状态】:现行
【国别】:
【发布日期】:1988
【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】:D22.03
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:介质;材料;过滤;气体流动;滞后;试验
【英文主题词】:
【摘要】:Theair-flowresistance(pressuredrop)ofafilterisanimportantparameterthatcanassistincharacterizingthephysicalmake-upaswellastheutilityofafilter.Therefore,flowcharacteristicsofcleanfiltermediacanbeusedforqualitycontrol,productdevelopment,andbasicresearch.Itmaybeusedbytheproduceroffiltermediatoillustratemediatypeortomeetproductspecificationandcanbeusedbytheconsumerasacriterionformediaselection.Thesemethodsmayalsobeusedforacceptancetesting.Forpurposesofqualitycontrol,meetingproductspecification,oracceptancetesting,asingle-pointflowregimeonmultiplesamplesisadequate.However,fordesign,development,andresearch,amultiple-pointflowregimemaybenecessary.1.1Theflowresistanceofanyfabricatedfilterdevicewilldependontheflowresistanceofthemediaused.1.2Thisstandardoffersproceduressufficienttodeterminethegasflowcharacteristicsofflatspecimensofmediausedinthefiltrationprocess.Themethodsareextendedtoincludepleatedspecimensandbulkmediaaswell.1.3Inallcases,flowratesthroughthespecimenaredeterminedinaccordancewithproceduresoutlinedinASME"FluidMeters."Thetestfluidisair.Thisstandardmayinvolvehazardousmaterials,operations,andequipment.Thisstandarddoesnotpurporttoaddressallofthesafetyproblemsassociatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:G60
【国际标准分类号】:71_040_30
【页数】:15P.;A4
【正文语种】: