【英文标准名称】:Acoustics-Noiseemittedbymachineryandequipment-Measurementofemissionsoundpressurelevelsataworkstationandatotherspecifiedpositions-Methodrequiringenvironmentalcorrections
【原文标准名称】:声学.机械装置及设备发出的噪声.工作地点和其它试验场所声压级的测量.测试要求环境条件的改变
【标准号】:BSENISO11204-1996
【标准状态】:作废
【国别】:英国
【发布日期】:1996-11-15
【实施或试行日期】:1996-11-15
【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】:数学计算;试验设备;准确度;再现性;测量特征;自然工作条件;试验条件;传声器;噪声;现场试验;声学测量;误差修正;操作工位;等级(质量);噪声(环境的);声学;声强
【英文主题词】:Acousticmeasurement;Acoustictesting;Acoustics;Airbornenoise;Anatomicalconfigurations;Control;Corrrections;Definitions;Emission;Emissionmeasurement;Environment;Ergonomics;Errorcorrection;Externalnoise;Fixings;Frequencies;Head(anatomy);Installations;Instruments;Machinenoise;Machines;Measurement;Measurementconditions;Measurementduration;Measuringenvironment;Measuringincertainity;Measuringinstruments;Measuringtechniques;Methods;Microphones;Noise;Noiseemissions;Noise(environmental);Noisemeasurements;Operatingstations;Operation;Operators;Persons;Position;Radiation;Seats;Sitting;Soundintensity;Soundlevels;Soundpressure;Soundpressurelevel;Soundpropagation;Status;Tests;Workingplaces
【摘要】:1GeneralThisInternationalStandardspecifiesamethodformeasuringtheemissionsoundpressurelevelsofmachineryandequipment,ataworkstationandatotherspecifiedpositionsnearby,inanyenvironmentwhichmeetscertainqualificationrequirements.EmissionsoundpressurelevelsaremeasuredasA-weightedand,ifrequired,C-weightedpeak,andinfrequencybands.NOTE1ThecontentsofthisandrelatedInternationalStandardsaresummarizedintable1ofISO11200:1995.Amethodisgivenfordeterminingalocalenviron-mentalcorrection(theacceptablemaximumvalueofwhichisspecified)tobeappliedtothemeasuredsoundpressurelevelstoexcludetheeffectsofre-flectionsfromreflectingsurfacesotherthantheplaneonwhichthemachineryorequipmentisplaced.Thiscorrectionisbaseduponthemeansoundpressurelevelonameasurementsurface,thesoundpressurelevelmeasuredataspecifiedposition,andeitheranenvironmentalindicatorortheequivalentabsorptionareaofthetestroom.Thegradeofaccuracyofthemeasurements(engineeringorsurvey)dependsuponthevauleofthelocalenvironmentalcorrection.Aworkstationisoccupiedbyanoperator.Itmaybelocatedinopenspaceintheroomwherethesourceoperates,orinacabfixedtothesource,orinanen-closureremotefromthesource.Oneormorespeci-fiedpositionsmaybelocatedinthevicinityofanattendedorunattendedmachine.Suchpositionsaresometimesreferredtoasbystanderpositions.ThisInternationalStandardspecifiesrequirementsonthetestenvironment.Instructionsaregivenfortheinstallationandoperationofthemachineundertestandforthechoiceofmicrophonepositionsfortheworkstationandforotherspecifiedpositions.Thepurposeofthemeasurementsistopermitcompar-isonoftheperformanceofdifferentunitsofagivenfamilyofmachineryorequipment,underdefineden-vironmentalconditionsandstandardizedmountingandoperatingconditions.Thedataobtainedmayalsobeusedforthedeclarationandverificationofemis-sionsoundpressurelevelsasspecifiedinISO4871.NOTE2Atanygivenpositioninrelationtoaparticularmachine,andforgivenmountingandoperatingconditions,theemissionsoundpressurelevelsdeterminedbythemethodofthisInternationalStandardwillingeneralbelowerthanthedirectlymeasuredsoundpressurelevelsforthesamemachineinthetypicalworkroomwhereitisused.Thisisduetoreverberationandthecontributionsofothermachines.Amethodofcalculatingthesoundpressurelev-elsinthevicinityofamachineoperatingaloneinaworkroomisgiveninISO11690-3.Commonlyobserveddifferencesare1dBto5dB,butinextremecasesthedif-ferencemaybeevengreater.2TypesofnoiseandnoisesourcesThemethodspecifiedinthisInternationalStandardisapplicabletoalltypesofmachinery,bothmovingandstationary,forindoororoutdooruse.Themethodisapplicabletomachinesofallsizes,andtoalltypesofnoiseasdefinedinISO2204andISO12001.3TestenvironmentThemethodisapplicabletoanindoororoutdooren-vironmentwithoneormorereflectingplanespresent,meetingspecifiedrequirements.4SpecifiedpositionsThisInternationalStandardisapplicabletoworkstationsandotherspecifiedpositionswhereemissionsoundpressurelevelsaretobemeasured.Examplesofappropriatepositionswheremeasure-mentsmaybemadeincludethefollowing:a)workstationlocatedinthevicinityofthemachineundertest;thisisthecaseformanyindustrialmachinesanddomesticappliances;b)workstationwithinacabwhichisanintegralpartofthemachineundertest;thisisthecaseformanyindustrialtrucksandearth-movingma-chines;c)workstationwithinapartialortotalenclosure(orbehindascreen)suppliedbythemanufacturerasanintegralpartofthemachineryorequipment;d)workstationpartially
【中国标准分类号】:Z32
【国际标准分类号】:17_140_20
【页数】:26P.;A4
【正文语种】:英语
基本信息
| 标准名称： | 速冻水果和蔬菜 净重测定方法 |
| 英文名称： | Quick frozen fruits and vegetables - Determination of net weight |
| 中标分类： |
农业、林业 >>
经济作物 >>
经济作物综合 |
| 发布部门： | 商务部 |
| 发布日期： | 2008-06-17 |
| 实施日期： | 2008-10-01 |
| 首发日期： | 1989-03-22 |
| 作废日期： | |
| 主管部门： | 商务部 |
| 归口单位： | 商务部 |
| 起草单位： | 北京锦绣大地农业股份有限公司（检测中心） |
| 出版日期： | |
| 计划单号： | 20062356-T-322 |
适用范围
没有内容
前言
没有内容
目录
没有内容
引用标准
没有内容
所属分类： 农业 林业 经济作物 经济作物综合