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BS EN 62369-1-2009 人体暴露在频率范围为0GHz~300GHz的各种设备中短程装置(SRDs)产生的电磁场的评估.电子产品监测、无线电频率鉴定和类似系统用装置产生的电磁场

作者:标准资料网 时间:2024-05-21 16:02:11  浏览:8390   来源:标准资料网
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【英文标准名称】:Evaluationofhumanexposuretoelectromagneticfieldsfromshortrangedevices(SRDs)invariousapplicationsoverthefrequencyrange0GHzto300GHz-Fieldsproducedbydevicesusedforelectronicarticlesurveillance,radiofrequencyidentificationa
【原文标准名称】:人体暴露在频率范围为0GHz~300GHz的各种设备中短程装置(SRDs)产生的电磁场的评估.电子产品监测、无线电频率鉴定和类似系统用装置产生的电磁场
【标准号】:BSEN62369-1-2009
【标准状态】:现行
【国别】:英国
【发布日期】:2009-04-30
【实施或试行日期】:2009-04-30
【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】:音频设备;定义;电场;电气工程;电磁场;电子仪器;场强(电);影响;极限(数学);低频;磁场;数学计算;测量;测量技术;医学科学;近场;近场测量值;人;射频识别;无线电频率识别;射频;无线电定位;RFID;监督(认可)
【英文主题词】:Audioequipment;Definitions;Electricfields;Electricalengineering;Electromagneticfields;Electronicinstruments;Fieldstrength(electric);Influences;Limits(mathematics);Lowfrequencies;Magneticfields;Mathematicalcalculations;Measurement;Measuringtechniques;Medicalsciences;Nearfield;Nearfieldmeasuringvalue;People;RadioFrequencyIdentification;Radiofrequencyidentifications;Radiofrequencies;Radiolocation;RFID;Surveillance(approval)
【摘要】:ThispartofIEC62369presentsproceduresfortheevaluationofhumanexposuretoelectromagneticfields(EMFs)fromdevicesusedinelectronicarticlesurveillance(EAS),radiofrequencyidentification(RFID)andsimilarapplications.Itadoptsastagedapproachtofacilitatecomplianceassessment.Thefirststage(Stage1)isasimplemeasurementagainsttheappropriatederivedreferencevalues.Stage2isamorecomplexseriesofmeasurementsorcalculations,coupledwithanalysistechniques.Stage3requiresdetailedmodellingandanalysisforcomparisonwiththebasicrestrictions.Whenassessinganydevice,themostappropriatemethodfortheexposuresituationmaybeused.AtthetimeofwritingthisInternationalStandard,electronicarticlesurveillance,radiofrequencyidentificationandsimilarsystemsdonotnormallyoperateatfrequenciesbelow1Hzorabove10GHz.EMFexposureguidelinesandstandardscancoverawiderrangeoffrequencies,soclarificationontherequiredrangeisincludedaspartoftheevaluationprocedures.Thedevicescoveredbythisdocumentnormallyhavenon-uniformfieldpatterns.Oftenthesedeviceshaveaveryrapidreductionoffieldstrengthwithdistanceandoperateundernearfieldconditionswheretherelationshipbetweenelectricandmagneticfieldsisnotconstant.This,togetherwithtypicalexposureconditionsfordifferentdevicetypes,isdetailedinAnnexA.AnnexBcontainscomprehensiveinformationtoassistwithnumericalmodellingoftheexposuresituation.Itincludesbothhomogeneousandanatomicalmodelsaswellastheelectricalpropertiesoftissue.ThisInternationalStandarddoesnotincludelimits.Limitscanbeobtainedfromseparatelypublishedhumanexposureguidelines.Differentguidelinesandlimitvaluesmayapplyindifferentregions.Linkedintotheguidelinesareusuallymethodsforsummationacrosswiderfrequencyrangesandformultipleexposuresources.Theseshallbeused.AsimplifiedmethodforsummationofmultiplesourcesiscontainedinAnnexC.Thishastobeusedwithcareasitissimplisticandwilloverestimatetheexposure;howeveritisusefulasaguide,whentheresultsofdifferentevaluationsareindifferentunitsofmeasurewhicharenotcompatible.Differentcountriesandregionshavedifferentguidelinesforhandlingtheuncertaintiesfromtheevaluation.AnnexDprovidesinformationonthetwomostcommonmethods.Abibliographyattheendofthisstandardprovidesgeneralinformationaswellasusefullinformationforthemeasurementofelectromagneticfields.See[1],[2],[3],[4],[5],[6]1).Similarnationalorinternationalstandardsmaybeusedasanalternative.
【中国标准分类号】:A58
【国际标准分类号】:17_240;13_28033_100_01
【页数】:76P.;A4
【正文语种】:英语


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【英文标准名称】:TotalCyanideinRefineryWatersbyVisibleSpectrophotometry
【原文标准名称】:用可见分光光度测定法测定精炼厂水中总氰化物
【标准号】:ASTMUOP682-1984
【标准状态】:现行
【国别】:美国
【发布日期】:1984
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:
【标准类型】:(UOP)
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:Thismethodisfordeterminingcyanideinaqueoussolutionsinthepresenceoflargequantitiesofsulfide.Thelowerlimitofdetectioninthepresenceof1.0%or0.1%sulfideis0.2or0.02mass-ppmcyanide,respectively.Theupperlimitofdetectioncanrangefrom200ppmto10,000ppmcyanidedependingonthesizeofthesampleselectedforanalysis.Thiosulfateabovealevelof0.1%willinterferewiththetest.Significantamountsofsulfite,thiocyanate,aldehydes,aminesandothermaterialscanalsointerferewiththeanalysis.Theinstabilityofcyanideinthepresenceofairrequiresthattheanalysisbeperformedassoonaspossibleaftersampling.
【中国标准分类号】:
【国际标准分类号】:
【页数】:11P.;A4
【正文语种】:英语


【英文标准名称】:Waterquality.Sampling.Guidanceonthepreservationandhandlingofsamples
【原文标准名称】:水质.第6部分:取样.第3节:水样保藏与处理导则
【标准号】:BS6068Sec.6.3-1986
【标准状态】:作废
【国别】:英国
【发布日期】:1986-05-30
【实施或试行日期】:
【发布单位】:英国标准学会(BSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:容器;防腐剂;保存;水;样本;质量;清洁处理;水质试验
【英文主题词】:water;samples;preservatives;cleaning;preservation;watertesting;quality;containers
【摘要】:
【中国标准分类号】:Z12;P40
【国际标准分类号】:
【页数】:16P;A4
【正文语种】:英语



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