I.S. EN ISO 5136:2009现行
Acoustics - Determination of Sound Power Radiated Into a Duct by Fans and Other Air-moving Devices - In-duct Method
出版：National Standards Authority of Ireland
专家解读视频
Gives a method for testing ducted fans and other air-moving devices to determine the sound power radiated into an anechoically terminated duct on the inlet and/or outlet side of the equipment. Applicable to fans which emit steady, broad-band and discrete-frequency sound and to air temperatures between -50 degrees C and +70 degrees C.
NBN EN ISO 5136:2009 - Identical
NEN EN ISO 5136:2009 - Identical
SS EN ISO 5136 Ed. 2 (2009) - Identical
NF EN ISO 5136:2009 - Identical
