DIN EN 25136 : 1994被替代
ACOUSTICS - DETERMINATION OF SOUND POWER RADIATED INTO A DUCT BY FANS - IN-DUCT METHOD
出版：German Institute for Standardisation (Deutsches Institut für Normung)
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基本信息
标准编号： DIN EN 25136 : 1994
标准类别：Standard
出版单位：German Institute for Standardisation (Deutsches Institut für Normung)
标准页数：0
标准简介
This standard is included in DIN Handbook 315. Specifies 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. Applies to fans that emit steady, broad band, narrow band and discrete frequency sound. Coverage includes: definitions and symbols; test facilities and instrumentation; information to be recorded; information to be reported. Also give detailed tables and annexes.
本标准替代的旧标准
