EN 61770-2006 与总水管连接的电气器具.避免软管组件的反虹吸和失效
作者:标准资料网 时间:2024-04-27 16:09:43 浏览:9799
来源:标准资料网
【英文标准名称】:Electricappliancesconnectedtothewatermains-Avoidanceofbacksiphonageandfailureofhose-sets(IEC61770:1998+A1:2004+A2:2006);GermanversionEN61770:1999+CorrigendumDecember2005+A1:2004+A2:2006
【原文标准名称】:与总水管连接的电气器具.避免软管组件的反虹吸和失效
【标准号】:EN61770-2006
【标准状态】:现行
【国别】:
【发布日期】:2007-01
【实施或试行日期】:2007-01-01
【发布单位】:欧洲标准学会(EN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:反虹吸系统;衣服干燥机;连接;定义;洗碗机;电气器具;家用电器;电气工程;失败;柔性管;软管组件;软管接头;软管;家用;抑制系统(防护);安全;安全要求;可用水;虹吸管;规范(验收);供水;家用洗衣机;总水管
【英文主题词】:Anti-siphonagesystems;Clothesdriers;Connections;Definition;Definitions;Dishwashingmachines;Electricappliances;Electrichouseholdappliance;Electricalengineering;Fail;Flexiblepipes;Hoseassemblies;Hoseconnectors;Hoses;Householduse;Restraintsystems(protective);Safety;Safetyrequirements;Servicewater;Siphons;Specification(approval);Suppliesofwater;Washingmachines;Watermains
【摘要】:
【中国标准分类号】:P41
【国际标准分类号】:97_040_40;97_060
【页数】:27P.;A4
【正文语种】:英语
【英文标准名称】:StandardPracticeforNearInfraredQualitativeAnalysis
【原文标准名称】:近红外线定性分析的标准实用规程
【标准号】:ASTME1790-2004(2010)
【标准状态】:现行
【国别】:美国
【发布日期】:2004
【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】:E13.11
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:molecularspectroscopy;near-infrared;qualitativeanalysis;Mahalanobisdistance;Infrared(IR)analysis--metals/alloys;Infraredspectroscopy;Molecularspectroscopy;Near-infraredanalysis/instruments;Qualitativeanalysis/measurement
【摘要】:NIRspectroscopyisawidelyusedtechniqueforquantitativeanalysis,anditisalsobecomingmorewidelyusedfortheidentificationoforganicmaterials,thatis,qualitativeanalysis.Ingeneral,however,theconceptofqualitativeanalysisasusedintheNIRspectralregiondiffersfromthatusedinthemid-IRspectralregioninthatNIRqualitativeanalysisreferstotheprocessofautomatedcomparisonofthespectraofunknownmaterialstothespectraofknownmaterialsinordertoidentifytheunknown.Thisapproachconstitutesalibrarysearchmethodinwhicheachusergenerateshisownlibrary.Historically,NIRspectroscopyaspracticedwithclassicalUV-VIS-NIRinstrumentsusingmethodssimilartothosedescribedinPracticeE1252wasnotconsideredtobeastrongtechniqueforqualitativeanalysis.Althoughthepositionsandintensitiesofabsorptionbandsinspecificwavelengthrangeswereusedtoconfirmthepresenceofcertainfunctionalgroups,thespectrawerenotconsideredtobespecificenoughtoallowunequivocalidentificationofunknownmaterials.AfewimportantlibrariesofNIRspectraweredevelopedforqualitativepurposes,butthelackofsuitabledatahandlingfacilitieslimitedthescopeofqualitativeanalysisseverely.Furthermore,earlierworkwaslimitedalmostentirelytoliquidsamples.Currently,themid-IRprocedureofdeducingthestructureofanunknownmaterialbymethodofanalysisofthelocations,strengths,andpositionalshiftsofindividualabsorptionbandsisgenerallynotusedintheNIR.WiththedevelopmentofspecializedNIRinstrumentsandmathematicalalgorithmsfortreatingthedata,itbecamepossibletoobtainawealthofinformationfromNIRspectrathathadhithertogoneunused.Whilethemathematicalalgorithmsdescribedinthispracticecanbeappliedtospectraldatainanyregion,thispracticedescribestheirapplicationtotheNIR.TheapplicationofNIRspectroscopytoqualitativeanalysisinthemannerdescribedisrelativelynew,andproceduresforthisapplicationarestillevolving.Theapplicationofchemometricmethodstospectroscopyhaslimitations,andthelimitationsarenotalldefinedyetsincethetechniquesarerelativelynew.Oneareaofconcerntosomescientistsistheeffectoflow-levelcontaminants.Anyanalyticalmethodologyhasitsdetectionlimits,andNIRisnodifferentinthisregard,butneitherwouldweexpectittobeanyworse.SincetherelativelybroadcharacterofNIRbandsmakesitunlikelythatacontaminantwouldnotoverlapanyofthemeasuredwavelengths,thequestionwouldonlybeoneofdegree:whetheragivenamountofcontaminantcouldbedetected.Theusermustbeawareoftheprobablecontaminantsheisliabletorunintoandaccountforthepossibilityofthisoccurring,perhapsbyincludingdeliberatelycontaminatedsamplesinthetrainingset.1.1Thispracticecoverstheuseofnear-infrared(NIR)spectroscopyforthequalitativeanalysisofliquidsandsolids.ThepracticeiswrittenundertheassumptionthatmostNIRqualitativeanalyseswillbeperformedwithinstrumentsdesignedspecificallyforthisregionandequippedwithcomputerizeddatahandlingalgorithms.Inprinciple,however,thepracticealsoappliestoworkwithliquidsamplesusinginstrumentsdesignedforoperationovertheultraviolet(UV),visible,andmid-infrared(IR)regionsifsuitabledatahandlingcapabilitiesareavailable.ManyFourierTransformInfrared(FTIR)(normallyconsideredmid-IRinstruments)haveNIRcapability,oratleastextended-rangebeamsplittersthatallowoperationto1.2x03BC;m;thispracticealsoappliestodatafromtheseinstruments.1.2ThevaluesstatedinSIunitsareto......
【中国标准分类号】:A42
【国际标准分类号】:71_040_50
【页数】:8P.;A4
【正文语种】:英语
基本信息
| 标准名称： | 耦合腔互易法声压基准操作技术规范 |
| 英文名称： | O.T.N. of the Primary Standard for the Sound Pressure of Reciprocity Technique |
| 中标分类： |
综合 >>
计量 >>
声学计量 |
| 替代情况： | 调整(转号)JJG 1269-1990 |
| 发布日期： | |
| 实施日期： | 1999-06-04 |
| 首发日期： | |
| 作废日期： | |
| 出版日期： | |
| 页数： | 4页 |
适用范围
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前言
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引用标准
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所属分类： 综合 计量 声学计量
