NEN ISO 5136 : 1994
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
01-05-2003
12-01-2013
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.
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