NEN ISO 5136:1994被替代
Acoustics - Determination Of Sound Power Radiated Into A Duct By Fans - In-duct Method
出版：Nederlands Normalisatie Instituut
专家解读视频
基本信息
标准编号： NEN ISO 5136:1994
发布时间：1994/1/1 0:00:00
标准类别：Standard
出版单位：Nederlands Normalisatie Instituut
标准页数：23
标准简介
Gives a method for testing ducted fans 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, broadband, narrow-band and discrete-frequency sound.
等同采用的国际标准
ISO 5136:2003 - Identical
