Product Code:SAE J313
Title:Diesel Fuels
Issuing Committee:Fuels And Lubricants Tc 7 Fuels
Scope:Automotive and railroad diesel fuels, in general, are derived from petroleum refinery products which are commonly referred to as middle distillates. Middle distillates represent products which have a higher boiling range than gasoline and are obtained from fractional distillation of the crude oil or from streams from other refining processes. Finished diesel fuels represent blends of middle distillates.The properties of commercial distillate diesel fuels depend on the refinery practices employed and the nature of the crude oils from which they are derived. Thus, they may differ both with and within the region in which they are manufactured. Such fuels generally boil over a range between 163 and 371 掳C (325 to 700 掳F). Their makeup can represent various combinations of volatility, ignition quality, viscosity, sulfur level, gravity, and other characteristics. Additives may be used to impart special properties to the finished diesel fuel.【英文标准名称】:Communicationsystemsformetersandremotereadingofmeters-Part5:Wirelessrelaying
【原文标准名称】:仪表及其远程读数通信系统.第5部分:无线终极转发
【标准号】:BSEN13757-5-2008
【标准状态】:现行
【国别】:英国
【发布日期】:2009-06-30
【实施或试行日期】:2009-06-30
【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】:通信系统;通信技术;计数器;数据交换;数据传送;数据传输;定义(术语);配电;电能;供能系统(建筑物);英语;交换;交换技术;耗热量表;信息;信息交换;信息处理;测量数据通信;协议;阅读;重新分配;遥控技术;遥控监示;远程控制系统;远程处理;热环境系统;传输;传输装置;传输协议
【英文主题词】:Communicationsystems;Communicationtechnology;Counters;Dataexchange;Datatransfer;Datatransmission;Definitions;Distributionofelectricity;Electricenergy;Energysupplysystems(buildings);Englishlanguage;Exchange;Exchangetechnique;Heatconsumptionmeters;Information;Informationinterchange;Informationprocessing;Measurementdatacommunication;Protocols;Reading;Redistribution;Remotecontroltechnology;Remotemonitoring;Telecontrolsystems;Teleprocessing;Thermalenvironmentsystems;Transmission;Transmissiondevices;Transmissionprotocol
【摘要】:Thisstandarddefinestherequirementsfortheprotocolstousewhenperformingrelayinginwirelessmeterreadoutnetworks.ThisdocumentisanextensiontoPart4ofEN13757,Wirelessmeterreadout(Radiometerreadingforoperationinthe868MHzto870MHzSRDband).ItsupportstheroutingofmodeR2,buttheroutingofmodeSandTisnotsupported.Themainuseofthisstandardistosupportroutedwirelessnetworksforthereadoutofmeters.
【中国标准分类号】:M54
【国际标准分类号】:33_200;35_100_10;35_100_20
【页数】:88P.;A4
【正文语种】:英语