EN ISO 2177-2004 金属覆层.覆层厚度的测量.阳极溶解库仑法
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【英文标准名称】:Metalliccoatings-Measurementofcoatingthickness-Coulometricmethodbyanodicdissolution(ISO2177:2003);GermanversionENISO2177:2004
【原文标准名称】:金属覆层.覆层厚度的测量.阳极溶解库仑法
【标准号】:ENISO2177-2004
【标准状态】:现行
【国别】:
【发布日期】:2004-08
【实施或试行日期】:
【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】:定义;电量测定法;测定;试验;金属膜;模锻件;自由锻件;剥离;覆层厚度;测量;金属覆层;厚度;阳极;方法;材料试验;层厚度测量;覆层
【英文主题词】:Anodic;Coatingthickness;Coatings;Coulometricmethods;Definition;Definitions;Determination;Dropforgings;Layerthicknessmeasurement;Materialstesting;Measurement;Metalcoatings;Metalfilms;Methods;Peeling;Smithhammerforgings;Testing;Tests;Thickness
【摘要】:
【中国标准分类号】:A29
【国际标准分类号】:17_040_20;25_220_40
【页数】:21P.;A4
【正文语种】:英语
【英文标准名称】:Highfidelityaudioequipmentandsystems;minimumperformancerequirements-Specificationforgeneralrequirements
【原文标准名称】:高保真度音频设备及系统最低性能要求.第1部分:一般要求规范
【标准号】:BS5942-1-1980
【标准状态】:现行
【国别】:英国
【发布日期】:1980-09-30
【实施或试行日期】:1980-09-30
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:家用的;通信设备;性能;音频系统;家用设备;电子设备及元件;试验条件;音频设备
【英文主题词】:Audioequipment;Basicvalue;Conversiontables;Datum;Electricalengineering;Generalsection;Highfidelityaudioequipmentandsystems;High-fidelity;Marking;Measurement;Metrology;Performance;Processcontrol;Processmeasuringandcontroltechnology;Referenceconditions;Specification(approval);Temperature;Thermocouples;Thermoelectricconversion;Thermoelectricdevices;Thermoelectricvoltage;Voltage
【摘要】:Specifiesgeneralconditionsofmeasurements,interconnections,requirementsforsafetyandpublisheddata.
【中国标准分类号】:M72
【国际标准分类号】:33_160_30
【页数】:8P;A4
【正文语种】:英语
【英文标准名称】:StandardTestMethodforEstimatingStrayRadiantPowerRatioofDispersiveSpectrophotometersbytheOpaqueFilterMethod
【原文标准名称】:用不透明滤光器评估色散分光光度计杂散辐射功率的标准试验方法
【标准号】:ASTME387-2004(2009)
【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】:E13.01
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:molecularspectroscopy;spectrophotometry;SRP;SRPR;straylight;strayradiantpower;strayradiantpowerratio;Energyanalysis;Energydeposition;Radiantenergy;Spectrophotometry--absorption
【摘要】:Strayradiantpowercanbeasignificantsourceoferrorinspectrophotometricmeasurements.SRPusuallyincreaseswiththepassageoftime;therefore,testingshouldbeperformedperiodically.Moreover,theSRPRtestisanexcellentindicatoroftheoverallconditionofaspectrophotometer.Acontrol-chartrecordoftheresultsofroutinelyperformedSRPRtestscanbeausefulindicatorofneedforcorrectiveactionor,atleast,ofthechangingreliabilityofcriticalmeasurements.Thistestmethodprovidesameansofdeterminingthestrayradiantpowerratioofaspectrophotometeratselectedwavelengthsinaspectralrange,asdeterminedbytheSRPfilterused,therebyrevealingthosewavelengthregionswheresignificantphotometricerrorsmightoccur.Itdoesnotprovideameansofcalculatingcorrectionstoindicatedabsorbance(ortransmittance)values.Thetestmethodmustbeusedwithcareandunderstanding,aserroneousresultscanoccur,especiallywithrespecttosomemoderngratinginstrumentsthatincorporatemoderatelynarrowbandpassSRP-blockingfilters.Thistestmethoddoesnotprovideabasisforcomparingtheperformanceofdifferentspectrophotometers.Note88212;Kaye(3)discussescorrectionmethodsofmeasuredtransmittances(absorbances)thatsometimescanbeusedifsufficientinformationonthepropertiesandperformanceoftheinstrumentcanbeacquired.SeealsoA1.2.5.Thistestmethoddescribestheperformanceofaspectrophotometerintermsofthespecifictestparametersused.Whenananalyticalsampleismeasured,absorptionbythesampleofradiationoutsideofthenominalbandpassattheanalyticalwavelengthcancauseaphotometricerror,underestimatingthetransmittanceoroverestimatingtheabsorbance,andcorrespondinglyunderestimatingtheSRPR.TheSRPRindicatedbythistestmethodusingSRPfiltersisalmostalwaysanunderestimationofthetruevalue(see1.3).Avaluecitedinamanufacturerx2019;sliteraturerepresentstheperformanceofanewinstrument,testedexactlyinaccordancewiththemanufacturerx2019;sspecification.Theimplicationisthatthemanufacturerx2019;sstatedSRPRcanserveasabenchmarkforfutureperformance,providedthattheuserperformsthemanufacturerx2019;sspecifiedtest.Itisrecommendedthatuserstestnewinstrumentspromptly,therebyestablishingacomparativebenchmarkintermsoftheirowntestingfacilities.Thesolutionfilterratiomethod(4.3)isaconvenientmethodforcontrol-chartingSRPR.Mielenz,etal.,(4)showthatitsresultstendtocorrelatewellwiththoseofthespecifiedwavelengthmethod,butforcriticalcomparisonwiththemanufacturerx2019;sspecification,themethodusedbythemanufacturermustbeused.BecausesomeinstrumentsreduceSRPbyincorporatingmoderatelynarrowbandpassSRP-blockingfiltersthatarechangedasthewavelengthrangeisscanned,itispossibleforSRPRdeterminationstobehighlyinaccurateifthecutoffwavelengthoftheSRPfilterfallstooclosetotheabsorptionedgeofaninstrumentx2019;sSRP-reducingfilter(3).1.1Strayradiantpower(SRP)canbeasignificantsourceoferrorinspectrophotometricmeasurements,andthedangerthatsucherrorexistsisenhancedbecauseitspresenceoftenisnotsuspected(1-4).Thistestmethodaffordsanestimateoftherelativeradiantpower,thatis,theStrayRadiantPowerRatio(SRPR),atwavelengthsremotefromthoseofthenominalbandpasstransmittedthroughthemonochromatorofanabsorptionspectrophotometer.Test-fil......
【中国标准分类号】:N33
【国际标准分类号】:
【页数】:11P.;A4
【正文语种】:英语
