ONORM EN 25136:1994被替代
Acoustics - Determination Of Sound Power Radiated Into A Duct By Fans - In-duct Method
出版：Osterreichisches Normungsinstitut
专家解读视频
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.
NF EN 25136:1994 - Identical
BS EN 25136:1994 - Identical
NBN EN 25136:1995 - Identical
I.S. EN 25136:1994 - Identical
ISO 5136:2003 - Identical
SS EN 25136 Ed. 1 (1994) - Identical
UNI EN 25136:1995 - Identical
UNE EN 25136:1995 - Identical
DIN EN 25136 (1994-02) - Identical
