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.

ONORM EN ISO 5136:2003

ONORM EN ISO 5136:2010

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