EN 300698-1-.4.1 电磁兼容性和射频频谱管理(ERM).国内水道用运行在VHF波段的海上移动业务用无线电话发射机和接收机.第1部分:技术特征和测量方法(采用英文版本EN300698-1V1.4.1(2009-12)作为德国标准)
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【英文标准名称】:ElectromagneticcompatibilityandRadiospectrumMatters(ERM)-RadiotelephonetransmittersandreceiversforthemaritimemobileserviceoperatingintheVHFbandsusedoninlandwaterways-Part1:Technicalcharacteristicsandmethodsofmeasurement(
【原文标准名称】:电磁兼容性和射频频谱管理(ERM).国内水道用运行在VHF波段的海上移动业务用无线电话发射机和接收机.第1部分:技术特征和测量方法(采用英文版本EN300698-1V1.4.1(2009-12)作为德国标准)
【标准号】:EN300698-1-.4.1
【标准状态】:现行
【国别】:
【发布日期】:2010-04
【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】:无线的;数据传送;内陆水域;内陆航道;船舶用无线电通信;船舶用无线电通信设备;测量;测量技术;测量方法;移动无线电通信系统;无线电天线;无线电工程;无线电设备;无线电接收机;无线电装置;无线电发射机;无线电话;额定值;语音传输;通信;电信;甚高频;VHF波段;无线通信业务
【英文主题词】:Cordless;Datatransfer;Inlandwaters;Inlandwaterway;Marineradio;Marineradioservice;Measurement;Measuringtechniques;Methodsformeasuring;Mobileradiosystems;Radioantennas;Radioengineering;Radioequipment;Radioreceivers;Radiosystems;Radiotransmitters;Radiotelephones;Ratings;Speechtransmission;Telecommunication;Telecommunications;VHF;VHFbands;Wirelesscommunicationservices
【摘要】:
【中国标准分类号】:L06
【国际标准分类号】:33_060_20;47_020_70
【页数】:2P.;A4
【正文语种】:英语
【英文标准名称】:Explosiveatmospheres-Part29-2:Gasdetectors-Selection,installation,useandmaintenanceofdetectorsforflammablegasesandoxygen
【原文标准名称】:爆炸性气体环境.第29-2部分:气体探测器.易燃气体和氧用探测器的选择、安装、使用和维护
【标准号】:BSEN60079-29-2-2007
【标准状态】:现行
【国别】:英国
【发布日期】:2008-02-29
【实施或试行日期】:2008-02-29
【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】:分析仪;燃烧气体;浓缩;团料;定义;检测;检波器(回路);电器;电气设备;电气工程;电驱动装置;防爆;爆炸安全;爆炸性环境;防火安全;可燃性环境;易燃材料;气体浓度;气体检测器;气体测量仪器;混合气体;气敏元件;指导手册;工业;装置;维修;测量;测量仪器;操作;氧;缺氧;参数;便携的;潜在爆炸物;特性;安全工程;安全要求;选择;传感器;规范(验收);火焰表面传播;试验设备;测试;贸易;蒸气压力;蒸气
【英文主题词】:Analyzers;Burninggases;Concentration;Conglomerates;Definition;Definitions;Detection;Detectors(circuits);Electricappliances;Electricalappliances;Electricalengineering;Electrically-operateddevices;Explosionprotection;Explosionsecurity;Explosiveatmospheres;Firesafety;Flammableatmospheres;Flammablematerials;Gasconcentrations;Gasdetectors;Gasmeasuringinstruments;Gasmixtures;Gassensors;Guidebooks;Industries;Installations;Maintenance;Measurement;Measuringinstruments;Operation;Oxygen;Oxygendeficiency;Parameters;Portable;Potentiallyexplosivematerials;Properties;Safetyengineering;Safetyrequirements;Selection;Sensors;Specification(approval);Surfacespreadofflame;Testequipment;Testing;Trade;Vapourpressure;Vapours
【摘要】:ThispartofIEC60079-29givesguidanceon,andrecommendedpracticefor,theselection,installation,safeuseandmaintenanceofelectricallyoperatedgroupIIapparatusintendedforuseinindustrialandcommercialsafetyapplicationsforthedetectionandmeasurementofflammablegasescomplyingwiththerequirementsofIEC60079-29-1.Thisstandardisapplicableforoxygenmeasurementforthepurposeofinertisationwhereexplosionprotectionisprovidedbytheexclusionofoxygeninsteadofmeasuringthecombustiblegasesorvapourspresent.Thisstandardisacompilationofpracticalknowledgetoassisttheuser,andappliestoapparatus,instrumentsandsystemsthatindicatethepresenceofaflammableorpotentiallyexplosivemixtureofgasorvapourwithairbyusinganelectricalsignalfromagassensortoproduceameterreading,toactivateavisualoraudiblepre-setalarmorotherdevice,oranycombinationofthese.Suchapparatusmaybeusedasameansofreducingtheriskwheneverthereisthepossibilityofarisktolifeorpropertyspecificallyduetotheaccumulationofacombustiblegas-airmixture,byprovidingsuchwarnings.Itmayalsobeusedtoinitiatespecificsafetyprecautions(e.g.plantshutdown,evacuation,fireextinguishingprocedures).Thisstandardisapplicabletoallnewpermanentinstallationsand,wherereasonablypracticable,toexistingpermanentinstallations.Itisalsoapplicabletotemporaryinstallations,whetherneworexisting.Similarlyitisapplicabletothesafeuseofportableortransportableapparatus,irrespectiveoftheageorcomplexityofsuchapparatus.Sincemuchmodernapparatusofthistypealsoincludesoxygendeficiencydetectionand/orspecifictoxicgassensors,someadditionalguidanceisgivenforthesetopics.NOTEWheninclassifiedareas,theapparatusshouldbesoinstalledandusedthatitisnotcapableofitselfignitingacombustiblegas-airmixture.ItshouldthereforecomplywiththerequirementsofIEC60079-10.Forthepurposesofthisstandard,exceptwherespecificallystatedotherwise,flammablegasesshallincludeflammablevapours.ThisstandardappliesonlytogroupIIapparatus(i.e.apparatusintendedforuseinindustrialandcommercialsafetyapplications,involvingareasclassifiedinaccordancewithIEC60079-10).Forthepurposesofthisstandard,apparatusincludesa)fixedapparatus;b)transportableapparatus;andc)portableapparatus.Thisstandardisnotintendedtocover,butmayprovideusefulinformation,forthefollowing:a)apparatusintendedonlyforthedetectionofnon-flammabletoxicgases;b)apparatusoflaboratoryorscientifictypeintendedonlyforanalysisormeasurementpurposes;c)apparatusintendedforundergroundminingapplications(groupIapparatus);d)apparatusintendedonlyforprocesscontrolapplications;e)apparatusintendedforapplicationsinexplosivesprocessingandmanufacture;f)apparatusintendedforthedetectionofapotentiallyflammableatmosphereresultingfromdustormistinair;g)openpathapparatusnotusedforpointmeasurement.
【中国标准分类号】:C81
【国际标准分类号】:13_320;29_260_20
【页数】:106P.;A4
【正文语种】:英语
【英文标准名称】:Measurementmicrophones-Part3:Primarymethodforfree-fieldcalibrationoflaboratorystandardmicrophonesbythereciprocitytechnique
【原文标准名称】:测量传声器第3部分:用互易技术对实验室标准传声器的自由场校准的基本方法
【标准号】:IEC61094-3-1995
【标准状态】:现行
【国别】:国际
【发布日期】:1995-11
【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/TC29
【标准类型】:()
【标准水平】:()
【中文主题词】:传声器;电声学;校正;测量传声器;电气工程
【英文主题词】:Acoustics;Acoustoelectricdevices;Calibration;Condensermicrophones;Effects;Electricalengineering;Electroacoustics;Environmentalcondition;Freefields;Laboratories;Laboratoryapparatus;Laboratoryfurniture;Measurement;Measurementmicrophones;Measuringinstruments;Measuringtechniques;Microphones;Soundpressure;Testing;Transfercoefficient
【摘要】:Specifiesamethodofdeterminingthefree-fieldsensitivitysoastoestablishareproducibleandaccuratebasisforthemeasurementofsoundpressureunderfree-fieldconditions.Intendedforusebylaboratorieswithhighlyexperiencedstaffandspecia
【中国标准分类号】:N65
【国际标准分类号】:17_140_50;33_160_50
【页数】:35P.;A4
【正文语种】:英语
