标准资料网-标准资料免费资源平台

【英文标准名称】:Machinechuckingreamerswithparallelshanks.
【原文标准名称】:机用圆柱柄铰刀
【标准号】:NFE66-014-1976
【标准状态】:作废
【国别】:法国
【发布日期】:1976-03-01
【实施或试行日期】:1976-02-18
【发布单位】:法国标准化协会(AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:直柄;尺寸公差;铰刀;工具;直径;原动机;尺寸;莫氏锥柄
【英文主题词】:dimensions;parallelshanks;tools;morsetapershanks;diameter;reamers;dimensionaltolerances;primemovers
【摘要】:
【中国标准分类号】:J41
【国际标准分类号】:25_100_60
【页数】:3P;A4
【正文语种】:其他


【英文标准名称】:TestMethodforDeterminingInitialFractionalFiltrationEfficiencyofaVacuumCleanerSystem
【原文标准名称】:测定真空吸尘器系统初始部分过滤效率的试验方法
【标准号】:ANSI/ASTMF1977-2004
【标准状态】:现行
【国别】:美国
【发布日期】:2004-03-01
【实施或试行日期】:
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:试验;真空吸尘设备;家用设备;给养设备;过滤器
【英文主题词】:Cateringequipment;Efficiency;Filters;Filtration;Householdequipment;Testing;Vacuumcleaners;Vacuumcleaningequipment
【摘要】:Thistestmethodmaybeusedtodeterminetheinitial,fractional,filtrationefficiencyofhouseholdandcommercialcanister(tank-type),stick,hand-held,upright,andutilityvacuumcleanersystems.1.1.1Water-filtrationvacuumcleanerswhichdonotutilitzeareplaceabledrymediafilterlocatedbetweenthewater-basedfilterandcleaningairexhaustarenotincludedinthistestmethod.Ithasbeendeterminedthattheexhaustofthesevacuumcleanersisnotcompatiblewiththespecifieddiscreteparticlecounter(DPC)procedure.Theinitial,fractional,filtrationefficienciesoftheentirevacuumcleanersystem,atfourdiscreteparticlesizes(0.3,0.5,1.0and2.5?m),isderivedbycountingupstreamchallengeparticlesandtheconstituentofdownstreamparticleswhilethevacuumcleanersystemisbeingoperatedinastationarytestcondition.Thevacuumcleanersystemistestedatthenozzleunderanormalairflowrateequivalentto150%oftheairflowrateproducedatthemaximumairpowerpointasdeterminedinaccordancewithTestMethodF558.Thevacuumcleanersystemistestedwithanewfilter(s)installed,andwithnopreliminarydustloading.Thefractionalefficienciesdeterminedbythistestmethodshallbeconsideredinitialsystemfiltrationefficiencies.Neutralizedpotassiumchloride(KCl)isusedasthechallengemediainthistestmethod.Oneortwoparticlecountersmaybeusedtosatisfytherequirementsofthistestmethod.Bothrequireflowcontrolmeanstoswitchbetweensamplingtheupstreamanddownstreamairsamplingprobes.Toefficientlyutilizethistestmethod,automatedtestequipmentandcomputerautomationisrecommended.Differentsamplingparameters,flowrates,andsoforth,forthespecificapplicationsoftheequipmentandtestproceduremayprovideequivalentresults.Itisbeyondthescopeofthistestmethodtodefinethosevariouspossibilities.Thistestmethodislimitedtothetestapparatus,oritsequivalent,asdescribedinthisdocument.Thistestmethodisnotintendedordesignedtoprovideanymeasureofthehealtheffectsormedicalaspectsofvacuumcleaning.ThistestmethodisnotintendedordesignedtodeterminetheintegrityofHEPAfiltrationassembliesusedinvacuumcleanersystemsemployedinnuclearanddefensefacilities.Theinch-poundsystemofunitsisusedinthistestmethod,exceptforthecommonusageofthemicrometer,?m,forthedescriptionofparticlesizewhichisaSIunit.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:P48
【国际标准分类号】:97_080
【页数】:
【正文语种】:英语