ANSI/UL 705-1994 电力通风机
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来源:标准资料网
【英文标准名称】:PowerVentilators
【原文标准名称】:电力通风机
【标准号】:ANSI/UL705-1994
【标准状态】:作废
【国别】:美国
【发布日期】:1994
【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】:通风机;鼓风机
【英文主题词】:ventilators;blowers
【摘要】:
【中国标准分类号】:J72
【国际标准分类号】:23_120
【页数】:
【正文语种】:英语
【英文标准名称】:StandardTestMethodforHazeandLuminousTransmittanceofTransparentPlastics
【原文标准名称】:透明塑料混浊度和透光率的标准试验方法
【标准号】:ASTMD1003-2011
【标准状态】:现行
【国别】:
【发布日期】:2011
【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】:D20.40
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:混浊度;光透射比;规则透射比;透明塑料
【英文主题词】:haze;luminoustransmittance;regulartransmittance;transparentplastics
【摘要】:Lightthatisscattereduponpassingthroughafilmorsheetofamaterialcanproduceahazyorsmokyfieldwhenobjectsareviewedthroughthematerial.Anothereffectcanbeveilingglare,asoccursinanautomobilewindshieldwhendrivingintothesun.Althoughhazemeasurementsaremademostcommonlybytheuseofahazemeter,aspectrophotometermaybeused,providedthatitmeetsthegeometricandspectralrequirementsofSection5.Theuseofaspectrophotometerforhazemeasurementofplasticscanprovidevaluablediagnosticdataontheoriginofthehaze,andProcedureBisdevotedtotheuseofaspectrophotometer.ProcedureA(hazemeter)testvaluesarenormallyslightlyhigherandlessvariablethanProcedureB(spectrophotometer)testvalues.Regularluminoustransmittanceisobtainedbyplacingaclearspecimenatsomedistancefromtheentranceportoftheintegratingsphere.However,whenthespecimenishazy,thetotalhemisphericalluminoustransmittancemustbemeasuredbyplacingthespecimenattheentranceportofthesphere.Themeasuredtotalhemisphericalluminoustransmittancewillbegreaterthantheregularluminoustransmittance,dependingontheopticalpropertiesofthesample.Withthistestmethod,thespecimenisnecessarilyplacedattheentranceportofthesphereinordertomeasurehazeandtotalhemisphericalluminoustransmittance.Hazedatarepresentativeofthematerialmaybeobtainedbyavoidingheterogeneoussurfaceorinternaldefectsnotcharacteristicofthematerial.Hazeandluminous-transmittancedataareespeciallyusefulforqualitycontrolandspecificationpurposes.Beforeproceedingwiththistestmethod,referenceshouldbemadetothespecificationofthematerialbeingtested.Anytestspecimenpreparation,conditioning,dimensions,ortestingparameters,orcombinationthereof,coveredinthematerialsspecificationshalltakeprecedenceoverthosementionedinthistestmethod.Iftherearenomaterialspecifications,thenthedefaultconditionsapply.1.1Thistestmethodcoverstheevaluationofspecificlight-transmittingandwide-angle-light-scatteringpropertiesofplanarsectionsofmaterialssuchasessentiallytransparentplastic.Twoproceduresareprovidedforthemeasurementofluminoustransmittanceandhaze.ProcedureAusesahazemeterasdescribedinSection5andProcedureBusesaspectrophotometerasdescribedinSection8.Materialhavingahazevaluegreaterthan30%isconsidereddiffusingandshouldbetestedinaccordancewithPracticeE2387.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Note18212;Forgreaterdiscriminationamongmaterialsthatscatterahighpercentoflightwithinanarrowforwardangle,suchasisthecasewithabradedtransparentplastics,adjustthehazemeterandperformmeasurementsinaccordancewithTestMethodD1044.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Note28212;ThistestmethodisnotequivalenttoISO13468-1andISO/DIS14782.
【中国标准分类号】:
【国际标准分类号】:83_140_99
【页数】:7P.;A4
【正文语种】:
基本信息
| 标准名称： | 金属覆盖层 镍+铬和铜+镍+铬电镀层 |
| 中标分类： |
综合 >>
基础标准 >>
材料防护 |
| 替代情况： | 被GB/T 9797-1997代替 |
| 发布日期： | 1900-01-01 |
| 实施日期： | 1989-09-01 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 1900-01-01 |
| 出版日期： | 1900-01-01 |
| 页数： | 18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 基础标准 材料防护
