NF P37-403-1995 预制屋面附件.屋顶安全钩
时间:2024-05-18 03:58:03 来源: 标准资料网 作者：标准资料网 阅读：9219
【英文标准名称】:Prefabricatedaccessoriesforroofing.Roofsafetyhooks.
【原文标准名称】:预制屋面附件.屋顶安全钩
【标准号】:NFP37-403-1995
【标准状态】:作废
【国别】:法国
【发布日期】:1995-12-01
【实施或试行日期】:1995-12-20
【发布单位】:法国标准化协会(AFNOR)
【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】:Q70
【国际标准分类号】:91_060_20
【页数】:9P;A4
【正文语种】:其他
【英文标准名称】:Durabilityofwoodandderivedmaterials;definitionofhazardclassesofbiologicalattack;part2:applicationtosolidwood;germanversionEN335-2:1992
【原文标准名称】:木材和木材制品的耐久性.生物侵害危险等级的定义.第2部分:对实心木材的应用
【标准号】:DINEN335-2-1992
【标准状态】:作废
【国别】:德国
【发布日期】:1992-10
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:持久性;木材;木制品;分类系统;实心木块;危害等级;感染;生物分析和试验;危害
【英文主题词】:Biodegradability;Biologicalanalysisandtesting;Classificationsystems;Definition;Definitions;Durability;Hazardclasses;Hazards;Infection;Permanency;Pestcontrol;Pestdamage;Products;Sawntimber;Soli
【摘要】:
【中国标准分类号】:B71
【国际标准分类号】:79_040
【页数】:10P;A4
【正文语种】:德语
【英文标准名称】:Heatmeterinstallation.Someguidelinesforselecting,installationandoperationofheatmeters
【原文标准名称】:热电偶装置.一些关于热电偶选择,安装和操作指南
【标准号】:PDCR13582-1999
【标准状态】:现行
【国别】:英国
【发布日期】:2008-03-31
【实施或试行日期】:
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:Aheatmeteriscomposedofthreeparts,aflowsensor,atemperaturesensorpairandacalculator.Thecalculatorisaunitwhichcalculatesvolumesandenergyconsumptionusingthevaluesfromthetemperaturesensorsandtheflowsensor.ThemostcommontypeoftemperaturesensorisaresistancethermometerofplatinumtypePt100,Pt500orPt1000.Thesensorsmeasurethetemperaturedifferencebetweentheincomingandoutgoingliquid.Theflowsensorisprobablythemosttroublesomeassemblyoftheheatmeter.Despiteanaccuracyrequirementofonly4-10%itisveryeasytofalloutsidetheselimits.Inordertocountertheseeffectsasfaraspossible,therefollowsasummaryofthevarioustypesofflowsensorandtheiradvantagesanddisadvantages.Thesizingofmeterstomatchtheirrequireddutyfrequentlyturnsouttohavebeenincorrectlyestimatedwhentheheatingplantcommencesoperation.Inmostcasesheatmetersthataretoolargefortheireventualdutyarespecifiedandaccuracyatlowloadsuffersasaresult.Whilstthispaperwillgivesomeguidanceonessentials,itisfeltthatmoreinformationonthistopicwouldbewelcomed.Heatmeteraccuraciesattimesofrapidlychangingheatdemandareunlikelytobehigh.Whilstattimesoflowdemandtheeffectofmeterinaccuracyintermsoflostrevenueislikelytobesmall,rapidchangesinvolvinghighdemandsonthenetworkmaypossiblyhaveimportantimplicationsinlostrevenueifmeterreactiontorapidchangesisslow.Researchintothesubjectseemstohavebeenlargelyneglectedsofar.ThemostcommonlyusedtypesofflowsensorshavebeenlistedinAnnexBandtheeffectonaccuracyofdifferenttypesofdisturbancesforeachofthelistedtypesofflowsensorsareconsidered.Thereislittleinformationontheeffectsofflowandflowdisturbancesontheservicelifeoftheflowsensor,asdistinctfromitseffectonthesensor’saccuracy.Tobewelcomed,therefore,isthelongtermresearchprojectonthistopicinitiatedinGermanywhichshouldresultinusefuldata.
【中国标准分类号】:K61
【国际标准分类号】:17_200_10
【页数】:30P.;A4
【正文语种】:英语