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+0247+@2023/24HVAC&RDirectory소음측정실※시험가능범위냉동기30RT급장비사양KSIISO3745음향-음압법에의한소음원의음향파워레벨과음향에너지레벨측정방법-무향실과반무향실의정밀측정방법KSCIEC61672-1전기음향–사운드레벨미터(소음계)기계장치의소음측정출처가전제품의소음특성한국소음진동학회2007<무향실구축예정>적용기준-ISO3745시험항목시험방법측정대상-공기청정기에어컨등전자제품배경소음-13dB(A)이하(공조가동시15dB(A)이하)측정하한주파수-125Hz흡음궤P.UWEDGE(400x200x650L)-자유음장125Hz이상에서ISO3745편차이내만족크기(m)-내부유효치수W59xL79xH43m-측정가능치수W45xL65xH36m흡음궤특성-BCA(BroadbandCompactAbsorber)-흡음율125Hz이상에서99%이상□소음계(Class2)-주파수범위(20~20000)Hz-주파수특성별측정범위A-weighting(25~138)dBC-weighting(33~138)dBZ-weighting(38~138)dBC-weightingpeaksoundlevel(55~141)dBZ-weightingpeaksoundlevel(60~141)dB