EN 62439-5-2010 工业通讯网络.高可获取度自动化网络.第5部分:信标冗余度协议(BRP)(IEC62439-5-2010).英文版本EN62439-5-2010
时间:2024-05-18 03:44:47 来源: 标准资料网 作者：标准资料网 阅读：9386
【英文标准名称】:Industrialcommunicationnetworks-Highavailabilityautomationnetworks-Part5:BeaconRedundancyProtocol(BRP)(IEC62439-5:2010);EnglishversionEN62439-5:2010
【原文标准名称】:工业通讯网络.高可获取度自动化网络.第5部分:信标冗余度协议(BRP)(IEC62439-5-2010).英文版本EN62439-5-2010
【标准号】:EN62439-5-2010
【标准状态】:现行
【国别】:
【发布日期】:2010-09
【实施或试行日期】:2010-09-01
【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】: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(EDP);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;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;冗余度;测试;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】:
【中国标准分类号】:M11
【国际标准分类号】:35_110
【页数】:46P;A4
【正文语种】:英语
【英文标准名称】:Fishboltswithsquarehead
【原文标准名称】:方头鱼尾夹紧螺栓
【标准号】:DIN5903Bb.2-1967
【标准状态】:作废
【国别】:
【发布日期】:
【实施或试行日期】:
【发布单位】:德国标准化学会(DE-DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:
【中国标准分类号】:J13
【国际标准分类号】:
【页数】:
【正文语种】:
【英文标准名称】:StandardTestMethodsforIn-PlaceDensityofUnhardenedandHardenedConcrete,IncludingRollerCompactedConcrete,ByNuclearMethods
【原文标准名称】:用核法测定硬化和未硬化混凝土(包括辗实混凝土)实体密度的标准试验方法
【标准号】:ASTMC1040-2005
【标准状态】:现行
【国别】:
【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(ASTM)
【起草单位】:C09.45
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:淬火的;密度;施工材料;混凝土;建筑;试验
【英文主题词】:acceptancetesting;backscattermeasurement;concrete-density;density;directtransmissionmeasurement;gammaradiation;in-placedensity;nucleartesting;roller-compactedconcrete;
【摘要】:Thesetestmethodsareusefulasrapid,nondestructivetechniquesforthein-placedeterminationofthedensityofunhardenedconcrete.Thebackscattertestmethodisalsousefulforthesamepurposeonhardenedconcrete.ThefundamentalassumptionsinherentinthetestmethodsarethatComptonscatteringisthedominantinteractionandthatthematerialundertestishomogeneous.Thesetestmethodsaresuitableforcontrolandforassistinginacceptancetestingduringconstruction,forevaluationofconcretequalitysubsequenttoconstruction,andforresearchanddevelopment.Note18212;Caremustbetakenwhenusingthesetestmethodsinmonitoringthedegreeofconsolidation,whichistheratiooftheactualdensityachievedtothemaximumdensityattainablewithaparticularconcrete.Thetestmethodspresentedhereareusedtodeterminetheactualdensity.Adensitymeasurement,byanytestmethod,isafunctionofthecomponentsoftheconcreteandmayvary,tosomeextent,inresponsetothenormal,acceptablevariabilityofthosecomponents.Testresultsmaybeaffectedbyreinforcingsteel,bythechemicalcompositionofconcreteconstituents,andbysampleheterogeneity.Thevariationsresultingfromtheseinfluencesareminimizedbyinstrumentdesignandbytheuser’compliancewithappropriatesectionsofthetestprocedure.Resultsoftestsbythebackscattertestmethodmayalsobeaffectedbythedensityofunderlyingmaterial.Thebackscattertestmethodexhibitsspatialbiasinthattheapparatus’sensitivitytothematerialunderitdecreaseswithdistancefromthesurfaceoftheconcrete.1.1Thesetestmethodscoverthedeterminationofthein-placedensityofunhardenedandhardenedconcrete,includingrollercompactedconcrete,bygammaradiation.Fornotesonthenucleartestsee.1.2Twotestmethodsaredescribed,asfollows:SectionTestMethodA-DirectTransmission7TestMethodB-Backscatter81.3Thevaluesstatedininch-poundunitsaretoberegardedasthestandard.TheSIequivalentsofinch-poundunitsmaybeapproximate.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Q13
【国际标准分类号】:91_100_30
【页数】:5P.;A4
【正文语种】: