NF EN 25136:1994被替代
ACOUSTIQUE - DETERMINATION DE LA PUISSANCE ACOUSTIQUE RAYONNEE DANS UN CONDUIT PAR DES VENTILATEURS - METHODE EN CONDUIT
出版：Association Francaise de Normalisation
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.
SS EN 25136 Ed. 1 (1994) - Identical
UNE EN 25136:1995 - Identical
UNI EN 25136:1995 - Identical
I.S. EN 25136:1994 - Identical
NBN EN 25136:1995 - Identical
BS EN 25136:1994 - Identical
SNV NF EN 25136:1994 - Identical
ONORM EN 25136:1994 - Identical
DIN EN 25136 (1994-02) - Identical
