AMCA 300:2008
AMCA 300:2008 Reverberant Room Method For Sound Testing Of Fans Applies to fans of all types and sizes.
Table of Contents
1HISTORY2INTRODUCTION
2.1PURPOSEANDSCOPE
2.2SOUNDPRESSUREANDSOUNDPOWER
2.3TESTMETHOD
2.4ACCURACYOFTESTRESULTS
2.5PRESENTATIONOFRESULTS
2.6APPLICATIONOFSOUNDPOWERLEVELS
3SYMBOLSANDDEFINITIONS
3.1SYMBOLS
3.2DEFINITIONS
3.2.1BladePassageFrequency
3.2.2.Chamber
3.2.3Decibel
3.2.4DuctedFan
3.2.5EndReflection
3.2.6Frequency
3.2.7NonductedFan
3.2.8OctaveBand
3.2.9ReverberantRoom
3.2.10ShallandShould
3.2.11SoundPowerLevel(Lw
3.2.12SoundPressureLevel(Lp)
3.2.13Wavelength
4INSTRUMENTSANDEQUIPMENT
4.1SOUNDLEVELMETER
4.2MICROPHONEANDASSOCIATEDCABLE
4.3FREQUENCYANALYZERANDWEIGHTINGSYSTEM
4.4DATARECORDINGEQUIPMENT
4.5REFERENCESOUNDSOURCE(RSS)
5TESTSETUPS
5.1SETUPCATEGORIES
5.2AERODYNAMICPERFORMANCE
5.3MOUNTINGMETHODS
5.4DUCTLENGTH
5.5MICROPHONETRAVEL
5.6CALIBRATIONOFSYSTEM
5.7EQUATIONS
6OBSERVATIONSANDCALCULATIONS
6.1OBSERVATIONS
6.1.1PointofOperation
6.1.2SoundPressureLevels
6.1.2.1SoundPressureLevels,Background(Lpb)
6.1.2.2SoundPressureLevels,RSS(Lpqm)
6.1.2.3SoundPressureLevels,Fan(Lp)
6.1.3TestConditions
6.2CALCULATIONS
6.2.1BackgroundCorrections
6.2.2SoundPowerLEVEL
7INFORMATIONTOBERECORDED
7.1FANUNDERTEST
7.2TESTENVIRONMENT
7.3LABORATORYANDINSTRUMENTATION
7.4ACOUSTICDATA
8MINIMUMINFORMATIONTOBEREPORTED
8.1FANUNDERTEST
8.2LABORATORYANDINSTRUMENTATION
8.3ACOUSTICDATA
APPENDIXA.ROOMQUALIFICATION:FULLOCTAVE/ONE-THIRD
OCTAVE
APPENDIXB.ROOMQUALIFICATION:PURETONES/NARROWBAND
APPENDIXC.UNCERTAINTIESANALYSIS
APPENDIXD.ALTERNATIVEPROCEDUREFORRSSCALIBRATION
APPENDIXE.DUCTENDCORRECTION
APPENDIXF.FILTERWEIGHTEDMEASUREMENTS
APPENDIXG.RADIATIONOFSOUNDBYFANCASING
APPENDIXH.TOTALFANSOUNDTESTINGWITHATTACHEDDUCTS
APPENDIXJ.REFERENCES