ANSI/TIA-568-C.1-2009 商业建筑远程通信电缆布线标准
时间:2024-04-28 11:52:50 来源: 标准资料网 作者：标准资料网 阅读：8753
【英文标准名称】:CommercialBuildingTelecommunicationsCablingStandard
【原文标准名称】:商业建筑远程通信电缆布线标准
【标准号】:ANSI/TIA-568-C.1-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【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】:建筑物;商业设施;布线;配置;连接器;距离;环境;最低要求;出口;电信;电话网;拓扑学
【英文主题词】:Buildings;Businessfacilities;Cabling;Configuration;Connectors;Distances;Environment;Minimumrequirements;Outlet;Telecommunications;Telephonenetworks;Topology
【摘要】:ThisStandardspecifiesminimumrequirementsfortelecommunicationscablingwithinacommercialbuildingandbetweenbuildingsinacampusenvironment.Itspecifiescablingrequirements,cablingdistances,telecommunicationsoutlet/connectorconfigurations,andarecommendedtopology.
【中国标准分类号】:P76
【国际标准分类号】:33_040_35
【页数】:
【正文语种】:英语
【英文标准名称】:StandardTestMethodforFreezingPointofAviationFuels(AutomaticLaserMethod)
【原文标准名称】:航空燃料冻结点的标准试验方法(自动激光法)
【标准号】:ASTMD7153-2005(2010)
【标准状态】:现行
【国别】:美国
【发布日期】:2005
【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】:D02.07
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:aviationturbinefuels;freezingpoint;waxcrystals;Automaticlasermethod;Aviationturbinefuels;Freezingpoint;Waxcrystals
【摘要】:Thefreezingpointofanaviationfuelisthelowesttemperatureatwhichthefuelremainsfreeofsolidhydrocarboncrystalswhich,ifpresentinthefuelsystemoftheaircraft,canrestricttheflowoffuelthroughfilters.Thetemperatureofthefuelintheaircrafttanknormallydecreasesduringflightdependingonaircraftspeed,altitude,andflightduration.Thefreezingpointofthefuelshallalwaysbelowerthantheminimumoperationalfueltemperature.Petroleumblendingoperationsrequireprecisemeasurementofthefreezingpoint.Thistestmethodexpressesresultstothenearest0.1x00B0;C,anditeliminatesmostoftheoperatortimeandjudgmentrequiredbyTestMethodD2386.WhenaspecificationrequiresTestMethodD2386,donotsubstitutethistestmethodoranyothertestmethod.1.1Thistestmethodcoversthedeterminationofthetemperaturebelowwhichsolidhydrocarboncrystalsmayforminaviationturbinefuels.1.2Thistestmethodisdesignedtocoverthetemperaturerangeof-80to20x00B0;C;however,theinterlaboratorystudymentionedin12.4hasonlydemonstratedthetestmethodwithfuelshavingfreezingpointsintherangeof-60to-42x00B0;C.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesandtodeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:E31
【国际标准分类号】:75_160_20
【页数】:9P.;A4
【正文语种】:英语