IEC 61237-1-1994 广播磁带录像机测量方法第1部分:机械测量
时间:2024-05-10 14:02:20 来源: 标准资料网 作者：标准资料网 阅读：9688
【英文标准名称】:Broadcastvideotaperecorders-Methodsofmeasurement-Part1:Mechanicalmeasurements
【原文标准名称】:广播磁带录像机测量方法第1部分:机械测量
【标准号】:IEC61237-1-1994
【标准状态】:现行
【国别】:国际
【发布日期】:1994-06
【实施或试行日期】:
【发布单位】:国际电工委员会(IX-IEC)
【起草单位】:IEC/TC100
【标准类型】:()
【标准水平】:()
【中文主题词】:测量技术;视频记录;测量;机械测量;磁带录像机;广播工程;电气工程
【英文主题词】:Broadcastengineering;Broadcasting;Compatibility;Electricalengineering;Electroacoustics;Measurement;Measuringtechniques;Mechanicalmeasurement;Recordingequipment;Testing;Videorecording;Videotaperecorders
【摘要】:Describesthemechanicalmeasurementmethodsrelatingtothecompatibilityparametersforrecordingandmeasuringmethodsoftherecordedtape.Theallowabletolerancesfortheratedvaluesforacceptableperformancearenotgiven,butmaybederivedfro
【中国标准分类号】:M71
【国际标准分类号】:33_160_40
【页数】:31P.;A4
【正文语种】:英语
【英文标准名称】:AmericanNationalStandard/CSAStandardforGasHoseConnectorsforPortableOutdoorGasFiredAppliances(sameasCSA8.4b)
【原文标准名称】:气体软管用美国国家标准/CSA标准.便携式户外燃气设备用连接器(与CSA8.4b相同)
【标准号】:ANSIZ21.54b-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【实施或试行日期】:
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:外部面积;特点;燃气软管;燃气器具;燃气燃烧;软管连接件;软管接头;便携的;规范(验收);测试
【英文主题词】:Exteriorareas;Features;Flexiblegastubes;Gasappliances;Gasburning;Hoseconnections;Hoseconnectors;Portable;Specification(approval);Testing
【摘要】:Detailstestandexaminationcriteriaforgashoseconnectorssuitableforconnectingportableoutdoorgas-firedappliancestofixedgassupplylinescontainingnatural,manufacturedormixedgases,liquefiedpetroleumgasesorLPgas-airmixturesatpressuresnotinexcessof1/2psi(3.45kPa).Theseconnectorsareintendedforuseinunconcealedoutdoorlocationsunlikelytobesubjecttoexcessivetemperatures[above200°F(93.5°C)].
【中国标准分类号】:G33
【国际标准分类号】:23_040_70
【页数】:
【正文语种】:英语
【英文标准名称】:TestMethodforPressureRatingPoly(vinylChloride)(PVC)PlasticPipeFittings,Schedule40and80Socket-type
【原文标准名称】:表:40～80插接式氯化聚氯乙烯(PVC)塑料管配件的标准规范
【标准号】:ANSI/ASTMF2261-2006
【标准状态】:现行
【国别】:美国
【发布日期】:2006-07-01
【实施或试行日期】:
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:氯化物;配件;管道配件;塑料管;塑料管配件;额定压力;PVC;额定;座孔;试验;氯乙烯
【英文主题词】:Chlorides;Fittings;Pipefittings;Plasticpipes;Plasticsfittings;Pressureratings;PVC;Rating;Sockets;Testing;Vinylchloride
【摘要】:ThistestmethodcoversaprocedureforestablishingPressureRatingforPVCschedule40and80socket-typefittingsbyevaluatingfittingfailuretestdataderivedbytestingwater-filledassembliesofpipeandfittings.Unlessthedataapproximatesastraightline,whencalculatedusinglog-logcoordinates,itisnotpossibletoassignapressureratingtothatproductorsampleofproduct.Datathatexhibithighscatter,oradownwardcurve,duetolowlongtermdata,willgivelowextrapolatedvaluesthataremoreconservativewhencalculatedusinglog-logco-ordinates.Inaddition,thisdownwardcurvewillshowashigherscatter,andwherethelowerconfidencelevellimitsarenotmetthedatashallbeclassifiedasunsuitable.(SeeNote1)Note1ThistestmethodissimilartothatusedinTestMethodD2837,whichhasbeenusedforabout30yearstoestablishtheHDSofplasticpipematerialsandisthebasisforallpressureratingsassignedtoplasticpipes.Theproductscoveredbythistestmethodareschedule40or80moldedPVCfittingsthatconformtoSpecificationsD2466orD2467.Thepressureratingsdevelopedusingthistestmethodappliesonlytofittingsidenticaltotheonesthatweretested.Somevariablesthatwillaffectthepressureratingare-pipesize,pattern,molddesign,material,andmoldingconditions.Thevaluesininch-poundunitsaretoberegardedasthestandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.ThetestingprocedureusedtoobtainthefittingfailuredatashallbeasdescribedinthosesectionsofTestMethodD1598,thatarereferencedinSectionofthistestmethod.Theproductscoveredbythistestmethodareintendedforuseinthedistributionofpressurizedliquidsat73?F.Whenappropriate,thedesignengineermustconsidertheeffectsofelevatedtemperatureandchemicalcompatibilityoftheliquidwiththefittingmaterialandapplynecessarydesignfactors.Thisstandarddoesnotpurporttoaddressallofthesafetyproblems,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicationofregulatorylimitationspriortouse.Note2Pressurized(compressed)airorothercompressedgasescontainlargeamountsofstoredenergywhichpresentserioussafetyhazardsshouldasystemfailforanyreason.
【中国标准分类号】:J15
【国际标准分类号】:23_040_45
【页数】:
【正文语种】:英语