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1、AHRIStandard575(formerlyARIStandard575)2008StandardforMethodofMeasuringMachinerySoundWithinanEquipmentSpacePrice$15.00(M)$30.00(NM)8Copyright1994,byAir-ConditioningandRefrigerationInstitutePrintedinU.S.A.RegisteredUnitedStatesPatentandTrademarkOfficeIMPORTANTSAFETYDISCLAIMERAHRIdoesnotsetsa
2、fetystandardsanddoesnotcertifyorguaranteethesafetyofanyproducts,componentsorsystemsdesigned,tested,rated,installedoroperatedinaccordancewiththisstandard/guideline.Itisstronglyrecommendedthatproductsbedesigned,constructed,assembled,installedandoperatedinaccordancewithnationallyrecognizedsafe
3、tystandardsandcoderequirementsappropriateforproductscoveredbythisstandard/guideline.AHRIusesitsbesteffortstodevelopstandards/guidelinesemployingstate-of-the-artandacceptedindustrypractices.AHRIdoesnotcertifyorguaranteethatanytestsconductedunderitsstandards/guidelineswillbenon-hazardousorfre
4、efromrisk.FOREWORDThisdocumentestablishesauniformmethodofmeasuringthesoundlevelsproducedbyair-conditioningandrefrigeratingmachineryinstalledinmechanicalequipmentspaces.However,itshouldbeemphasizedthatthisstandardwasdevelopedforusewherethetestconditionsusuallycannotbecontrolled,e.g.,ambientt
5、emperature;equipmentloading;physicalattributesofthespace;backgroundsoundsources,etc.Sincetheresultsobtainedmayvarysubstantially,atoleranceontheseresultscannotbespecified.Uniformpracticesinmakingsoundlevelmeasurementsarenecessaryforeffectivecommunicationbetweentheowner,thearchitect,theacoust
6、ician,theconsultingengineer,thecontractorandtheequipmentmanufacturer.Specificationsforsoundlevelsproducedbymachinerymaybewritten,bothforthepurposeofsupplyinginformationinordertoevaluatecompliancewithnoiseexposurelimitsandforthepurposeofprovidinginformationforadequatebuildingdesigntomeetthea
7、cousticaldesigngoalsofadjacentoccupiedspaces.Inviewofthegeometricalandacousticalpropertiesoflargeequipment,bothpurposescanbestbeservedbysounddataexpressedintermsofSoundPressureLevelmeasuredclosetotheequipment.Soundpressuremeasurementsclosetotheequipmenta
