UL 813-1996 商用音频设备
作者:标准资料网 时间:2024-05-21 19:42:20 浏览:9085
来源:标准资料网
【英文标准名称】:ULStandardforSafetyCommercialAudioEquipmentSeventhEdition;ReprintwithRevisionsThroughandIncludingOctober29,2007
【原文标准名称】:商用音频设备
【标准号】:UL813-1996
【标准状态】:现行
【国别】:美国
【发布日期】:1996
【实施或试行日期】:
【发布单位】:美国保险商实验所(US-UL)
【起草单位】:UL
【标准类型】:()
【标准水平】:()
【中文主题词】:无线电接收机;互通;无线电和相关音响设备;附件;商业用;放大器;唱机;信号处理;音频设备;前置放大器
【英文主题词】:preamplifiers;radioandassociatedsoundequipment;signalprocessing;amplifiers;audioequipment;radioreceivers;commercialuse;record-players;accessories;intercommunication
【摘要】:Theserequirementscoverpower-operatedaudioequipmentandaccessories,rated300voltsorless,thatareintendedforuseincommercialenterprisesorestablishmentsandotherlocationssuchaschurches,schools,theaters,andfactories.ThisequipmentisforuseonsupplycircuitsinaccordancewiththeNationalElectricalCode,NFPA70.
【中国标准分类号】:M72
【国际标准分类号】:33_160_30
【页数】:138P.;A4
【正文语种】:英语
【英文标准名称】:Sanitaryappliances-Specificationforwhirlpoolbaths.
【原文标准名称】:卫生器具.涡流浴池的规范.
【标准号】:NFD11-126-2008
【标准状态】:现行
【国别】:法国
【发布日期】:2008-05-01
【实施或试行日期】:2008-05-23
【发布单位】:法国标准化协会(FR-AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Bathequipment;Bathrooms;Baths;CEmarking;Conformityassessment;Definition;Definitions;Determination;Electricalsafety;Equipment;Labelling;Marking;Operationalinstructions;Resistance;Safety;Safetyengineering;Safetyrequirements;Sanitaryappliances;Scratchresistance;Scratches;Specification(approval);Strengthofmaterials;Testing;Whirlbathtubs;Whirlingbathappliances;Whirlpool
【摘要】:
【中国标准分类号】:Q31;Q81
【国际标准分类号】:91_140_70
【页数】:20P.;A4
【正文语种】:其他
【英文标准名称】:StandardTestMethodforAmbientTemperatureFatigueLifeofMetallicBondedResistanceStrainGages
【原文标准名称】:金属粘合抗应变仪的环境温度疲劳寿命的标准试验方法
【标准号】:ASTME1949-2003(2009)
【标准状态】:现行
【国别】:美国
【发布日期】:2003
【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】:E28.01
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:Ambienttemperature;Bondedresistancestraingages;Fatigue;Metalfatiguetesting;Straingages
【摘要】:Straingagesarethemostwidelyuseddevicesformeasuringstrainsandforevaluatingstressesinstructures.Inmanyapplicationsthereareoftencyclicloadswhichcancausestraingagefailure.Performanceparametersofstraingagesareaffectedbyboththematerialsfromwhichtheyaremadeandtheirgeometricdesign.Thedeterminationofmoststraingageparametersrequiresmechanicaltestingthatisdestructive.Sincegagestestedforfatiguelifecannotbeusedagain,itisnecessarytotreatdatastatistically.Ingeneral,longerandwidergageswithlowerresistanceswillhavegreaterfatiguelife.Optionaladditionstogages(integralleadsareanexample)willoftenreducefatiguelife.Tobeused,straingagesmustbebondedtoastructure.Goodresults,particularlyinafatigueenvironment,dependheavilyonthematerialsusedtocleanthebondingsurface,tobondthegage,andtoprovideaprotectivecoating.Skilloftheinstallerisanothermajorfactorinsuccess.Finally,instrumentationsystemsmustbecarefullyselectedandcalibratedtoensurethattheydonotundulydegradetheperformanceofthegages.Thistestmethodencompassesonlyfullyreversedstraincycles.Fatiguefailureofastraingagemaynotinvolvevisiblecrackingorfractureofthegage,butmerelysufficientzeroshifttocompromisetheaccuracyofthegageoutputforstaticstraincomponents.1.1Thistestmethodcoversauniformprocedureforthedeterminationofstraingagefatiguelifeatambienttemperature.Asuggestedtestingequipmentdesignisincluded.1.2Thistestmethoddoesnotapplytoforcetransducersorextensometersthatusebondedresistancestraingagesassensingelements.1.3Straingagesarepartofacomplexsystemthatincludesstructure,adhesive,gage,leadwires,instrumentation,and(often)environmentalprotection.Asaresult,manythingsaffecttheperformanceofstraingages,includingusertechnique.Afurthercomplicationisthatstraingages,onceinstalled,normallycannotbereinstalledinanotherlocation.Therefore,itisnotpossibletocalibrateindividualstraingages;performancecharacteristicsarenormallypresentedonastatisticalbasis.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortoitsuse.
【中国标准分类号】:N62
【国际标准分类号】:19_060
【页数】:5P.;A4
【正文语种】:英语
