ANSI/RMA IP-25-1991 利用可变速V型带(12交叉部分)的传动装置规范
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来源:标准资料网
【英文标准名称】:SpecificationsforDrivesUsingVariableSpeedV-Belts(12CrossSections)
【原文标准名称】:利用可变速V型带(12交叉部分)的传动装置规范
【标准号】:ANSI/RMAIP-25-1991
【标准状态】:作废
【国别】:美国
【发布日期】:1991
【实施或试行日期】:
【发布单位】:美国国家标准学会(ANSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:动力传动系统;三角皮带;规范
【英文主题词】:powertransmissionsystems;specifications;v-belts
【摘要】:
【中国标准分类号】:J18
【国际标准分类号】:21_220_10
【页数】:
【正文语种】:英语
【英文标准名称】:StandardPracticeforIntegrityTestingofWaterFiltrationMembraneSystems
【原文标准名称】:水过滤膜系统的完整性测试的标准实施规程
【标准号】:ASTMD6908-2006
【标准状态】:现行
【国别】:
【发布日期】:2006
【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】:D19.08
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:过滤;完整性;薄膜材料;试验;水
【英文主题词】:continuousmonitoring;integrity;membrane;multiplexing;pressuredecay;solubledyetest;TOCtest;vacuumdecay
【摘要】:Theintegritytestmethodsdescribedareusedtodeterminetheintegrityofmembranesystems,andareapplicabletosystemscontainingmembranemoduleconfigurationsofbothhollowfiberandflatsheet;suchas,spiral-woundconfiguration.InallcasesthepracticesapplytomembranesintheRO,NF,andUFmembraneclasses.However,theTOCandDyeTestpracticesdonotapplytomembranesintheMFrangeortheupperendoftheUFporesizerange(0.01x03BC;mandlargerporesizes)duetoinsignificantorinconsistentremovalofTOCmaterialbythesemembranes.Thesemethodsmaybeusedtoidentifyrelativechangesintheintegrityofasystem,orusedinconjunctionwiththeequationsdescribedin9.4,toprovideameansofestimatingtheintegrityintermsoflogreductionvalue.Forcriticalapplications,estimatedlogreductionsusingtheseequationsshouldbeconfirmedbyexperimentfortheparticularmembraneandsystemconfigurationused.Theabilityofthemethodstodetectanygivendefectisaffectedbythesizeofthesystemorportionofthesystemtested.Selectingsmallerportionsofthesystemtotestwillincreasethesensitivityofthetesttodefects.Whendeterminingthesizethatcanbetestedasadiscreteunit,usetheguidelinessuppliedbythesystemmanufacturerorthegeneralguidelinesprovidedinthisstandard.Theapplicabilityofthetestsislargelyindependentofsystemsizewhenmeasuredintermsoftheimpactofdefectsonthetreatedwaterquality(thatis,thesystemLRV).Thisisbecausethebypassflowfromanygivendefectisdilutedinproportiontothesystemstotalflowrate.Forexample,a10-modulesystemwithasingledefectwillproducethesamewaterqualityasa100-modulesystemwithtenofthesamesizedefects.1.1Thispracticecoversthedeterminationoftheintegrityofwaterfiltrationmembraneelementsandsystemsusingairbasedtests(pressuredecayandvacuumhold),solubledye,continuousmonitoringparticulatelightscattertechniques,andTOCmonitoringtestsforthepurposeofrejectingparticlesandmicrobes.Thetestsareapplicabletosystemswithmembranesthathaveanominalporesizelessthanabout1m.TheTOC,andDye,testsaregenerallyapplicabletoNFandROclassmembranesonly.1.2Thispracticedoesnotpurporttocoverallavailablemethodsofintegritytesting.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:J77
【国际标准分类号】:13_060_01
【页数】:20P.;A4
【正文语种】:
【英文标准名称】:Ureaforindustrialuse;MeasurementofcolourinHazenunits(platinum-cobaltscale)ofaurea-formaldehydesolution
【原文标准名称】:工业用尿素以哈森为单位(铂-钴色标)测定尿素-甲醛液的色度
【标准号】:ISO2750-1974
【标准状态】:作废
【国别】:国际
【发布日期】:1974-08
【实施或试行日期】:
【发布单位】:国际标准化组织(ISO)
【起草单位】:ISO/TC47
【标准类型】:()
【标准水平】:()
【中文主题词】:比色法;试样;颜色;脲;哈森色数;铂-钴标度;感官分析;感官分析(食品)
【英文主题词】:ureas;testspecimens;platinun-cobaltscales;sensoryanalysis;sensoryanalysis(food);hazencolournumber;colorimetry;colour;urea
【摘要】:Laysdowntheprincipleofthevisualcomparisonofthecolourofasolutionofthesampleinformaldehyde,stabilizedatapHof100.1,withthatofcolourstandards.ExpressionoftheresultsintermsofHazenunits.Forroutinecontrolpurposes,referringtoISO2211.ThemethodhasalsobeenapprovedbytheIUPAC.
【中国标准分类号】:G15
【国际标准分类号】:
【页数】:2P;A4
【正文语种】:英语
