【英文标准名称】:Waterquality;Determinationoffreechlorineandtotalchlorine;Part2:ColorimetricmethodusingN,N-diethyl-1,4-phenylenediamine,forroutinecontrolpurposes
【原文标准名称】:水质游离氯和总氯的测定第2部分:常规控制目的时使用的N,N-二乙基-1,4-苯二胺比色法
【标准号】:ISO7393-2-1985
【标准状态】:现行
【国别】:国际
【发布日期】:1985-10
【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/TC147
【标准类型】:()
【标准水平】:()
【中文主题词】:水;水质;化学分析;氯;含量测定;水质试验;比色法;质量;比色分析;化学分析和试验
【英文主题词】:Chemicalanalysisandtesting;Chemicalreactions;Chlorine;Colorimetry;Definitions;Determinationofcontent;Quality;Routinetests;Water;Waterquality;Watertesting
【摘要】:Specifiesaprocedureforwater,readilyapplicabletofieldtesting;itisbasedonmeasurementofthecolourintensitybyvisualcomparisonofthecolourwithascaleofstandardswhichisregularlycalibrated.Seawaterandwaterscontainingbromidesandiodidescompriseagroupforwhichspecialproceduresarerequired.Theprocedureisapplicabletoconcentrations,intermsofchlorine,from0,0004to0,07mmol/ltotalchlorineandathigherconcentrationsbydilutionofsamples.Interferencesoftheprocedurearenoted.
【中国标准分类号】:Z16
【国际标准分类号】:13_060_50
【页数】:8P;A4
【正文语种】:英语


【英文标准名称】:Electricitymeteringequipment(a.c.)-Particularrequirements-Staticmetersforactiveenergy(classindexesA,BandC)
【原文标准名称】:电学计量设备(a.c.).特殊要求.有功电能(等级指数A、B和C)静态计
【标准号】:BSEN50470-3-2006
【标准状态】:现行
【国别】:英国
【发布日期】:2006-12-29
【实施或试行日期】:2006-12-29
【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】:交流电流;交流瓦特电度表;防护等级;气候条件;计数器;电流强度;电能;电度表;电磁兼容性;机电的;电子的;外壳;环境条件;热阻;耐水解;指示;作标记;绝缘;干扰抑制;文字书写;测量设备;工作温度范围;精密度;合格试验;参考电压;耐力;规范(验收);试验;试验条件;瓦时表
【英文主题词】:Activecurrent;Alternatingcurrent;Alternatingvoltagetests;Alternating-currentmeters;Classesofprotection;Climaticcondition;Counters;Currentmeters;Currentrates;Degreesofprotection;Drift;Electricenergy;Electricalengineering;Electricitymeter;Electricitysupplymeters;Electromagneticcompatibility;Electromechanical;Electronic;Electronicmeasuringdevices;EMC;Enclosures;Energymeasurement;Environmentalcondition;Heatresistance;Hydrolyticresistance;Indications;Inscription;Insulations;Interferencerejections;Letterings;Limits(mathematics);Manipulation;Measuringequipment;Measuringinstruments;Metersforactiveenergy;Operatingtemperaturerange;Precision;Qualificationtests;Referencevoltage;Reliability;Resistance;Specification(approval);Static;Testcircuits;Testing;Testingconditions;Watt-hourmeters
【摘要】:ThisEuropeanStandardappliestonewlymanufacturedstaticwatt-hourmetersintendedforresidential,commercialandlightindustrialuse,ofclassindexesA,BandC,forthemeasurementofalternatingcurrentelectricalactiveenergyin50Hznetworks.Itspecifiesparticularrequirementsandtypetestmethods.Itappliestostaticwatt-hourmetersforindoorandoutdoorapplication,consistingofameasuringelementandregister(s)enclosedtogetherinametercase.Italsoappliestooperationindicator(s)andtestoutput(s).Ifthemeterhas(a)measuringelement(s)formorethanonetypeofenergy(multi-energymeters),orwhenotherfunctionalelements,likemaximumdemandindicators,electronictariffregisters,timeswitches,ripplecontrolreceivers,datacommunicationinterfacesetc.areenclosedinthemetercase(multi-functionmeters)thenthisstandardappliesonlyfortheactiveenergymeteringpart.Thisstandarddistinguishesbetween:?metersofclassindexesA,BandC;?directconnectedandtransformeroperatedmeters;?metersforuseinnetworksequippedwithorwithoutearthfaultneutralizers.Itdoesnotapplyto:?watt-hourmeterswherethevoltageacrosstheconnectionterminalsexceeds600V(line-tolinevoltageformetersforpolyphasesystems);?portablemeters;?referencemeters.MethodsforacceptancetestingarecoveredbytheIEC62058seriesofstandards1).ThedependabilityaspectiscoveredbythedocumentsoftheIEC62059series.
【中国标准分类号】:Q77
【国际标准分类号】:91_140_50
【页数】:34P.;A4
【正文语种】:英语