您的位置: 标准下载 » 国际标准 » BS 英国标准 »

BS EN 62439-1-2010 工业通讯网络.高可靠性自动化网络.一般概念和计算方法

作者:标准资料网 时间:2024-05-07 09:03:09  浏览:9265   来源:标准资料网
下载地址: 点击此处下载
【英文标准名称】:Industrialcommunicationnetworks-Highavailabilityautomationnetworks-Generalconceptsandcalculationmethods
【原文标准名称】:工业通讯网络.高可靠性自动化网络.一般概念和计算方法
【标准号】:BSEN62439-1-2010
【标准状态】:作废
【国别】:英国
【发布日期】:2010-06-30
【实施或试行日期】:2010-06-30
【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】:自动化;有效性;电路网络;通信;通信规程;通信系统;通信技术;计算机网络;控制规程;数据交换;数据处理;数据保护;数据安全;数据传送;数据传输;数据传输控制规程;电子数据处理;电气工程;以太网;信息交换;信息处理;信息系统;网络;网络管理;开式系统;开放系统互连;OSI;协议实现一致性声明;协议履行一致性声明;无线电信标;冗余;试验;传递函数
【英文主题词】:Automation;Availability;Circuitnetworks;Communication;Communicationprocedures;Communicationsystems;Communicationtechnology;Computernetworks;Controlprocedures;Dataexchange;Dataprocessing;Dataprotection;Datasecurity;Datatransfer;Datatransmission;Datatransmissioncontrolprocedures;EDP;Electricalengineering;Ethernet;Informationinterchange;Informationprocessing;Informationsystems;Network;Networkmanagement;Opensystems;Opensystemsinterconnection;OSI;PICS;Protocolimplementationconformancestatement;Radiobeacons;Redundancy;Testing;Transferfunctions
【摘要】:TheIEC62439seriesisapplicabletohigh-availabilityautomationnetworksbasedontheISO/IEC8802-3(IEEE802.3)(Ethernet)technology.ThispartoftheIEC62439seriesspecifies?thecommonelementsanddefinitionsforotherpartsoftheIEC62439series;?theconformancetestspecification(normative);?aclassificationschemefornetworkcharacteristics(informative);?amethodologyforestimatingnetworkavailability(informative);?theconfigurationrules,calculationandmeasurementmethodforadeterministicrecoverytimeinRSTP.
【中国标准分类号】:M11
【国际标准分类号】:25_040_40;35_040;35_110
【页数】:58P.;A4
【正文语种】:英语


下载地址: 点击此处下载
Product Code:SAE AMS3372
Title:Silicone Resin, Elastomeric, High Tear Strength, Elevated Temperature Cure
Issuing Committee:Ams G9 Aerospace Sealing Committee
Scope:This specification covers a silicone resin in the form of a two-component liquid. Primarily for encapsulation and conformal coating applications where dielectric properties are important and an elevated temperature cure is desired.【英文标准名称】:Determinationoftheultimateaerobicbiodegradabilityofplasticmaterialsinanaqueousmedium-Methodbymeasuringtheoxygendemandinaclosedrespirometer
【原文标准名称】:水介质中塑料材料富氧菌生物降解性的测定在一封闭呼吸器中测定需氧量的方法
【标准号】:ISO14851-1999
【标准状态】:现行
【国别】:国际
【发布日期】:1999-05
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC61
【标准类型】:()
【标准水平】:()
【中文主题词】:塑料;测定;定义;需氧量;试验;微生物;生物降解能力;有机化合物;好气菌;质量
【英文主题词】:Aerobicbacteria;Biodegradability;Definitions;Determination;Measurement;Microorganisms;Organiccompounds;Oxygendemand;Plastics;Quality;Respirometers;Testing
【摘要】:ThisInternationalStandardspecifiesamethod,bymeasuringtheoxygendemandinaclosedrespirometer,forthedeterminationofthedegreeofaerobicbiodegradabilityofplasticmaterials,includingthosecontainingformulationadditives.Thetestmaterialisexposedinanaqueousmediumunderlaboratoryconditionstoaninoculumfromactivatedsludge,compostorsoil.Ifanunadaptedactivatedsludgeisusedastheinoculum,thetestsimulatesthebiodegradationprocesseswhichoccurinanaturalaqueousenvironment;ifamixedorpre-exposedinoculumisused,themethodcanbeusedtoinvestigatethepotentialbiodegradabilityofatestmaterial.TheconditionsusedinthisInternationalStandarddonotnecessarilycorrespondtotheoptimumconditionsallowingmaximumbiodegradationtooccur,butthestandardisdesignedtodeterminethepotentialbiodegradabilityofplasticmaterialsorgiveanindicationoftheirbiodegradabilityinnaturalenvironments.Themethodenablestheassessmentofthebiodegradabilitytobeimprovedbycalculatingacarbonbalance(optional,seeannexE).Themethodappliestothefollowingmaterials:—Naturaland/orsyntheticpolymers,copolymersormixturesthereof.—Plasticmaterialswhichcontainadditivessuchasplasticizers,colorantsorothercompounds.—Water-solublepolymers.—Materialswhich,underthetestconditions,donotinhibitthemicroorganismspresentintheinoculum.Inhibitoryeffectscanbedeterminedusinganinhibitioncontrolorbyanotherappropriatemethod(seee.g.ISO8192).Ifthetestmaterialisinhibitorytotheinoculum,alowertestconcentration,anotherinoculumorapre-exposedinoculumcanbeused.
【中国标准分类号】:Z04
【国际标准分类号】:83_080_01
【页数】:22P;A4
【正文语种】:英语