BS 848-2.4:2004废止
Industrial fans. Determination of fan sound power levels under standardized laboratory conditions. Sound intensity method
出版：British Standards Institution
专家解读视频
Applicable to industrial fans as defined in ISO 5801 andISO 13349. Determines sound power by using sound intensitymeasurements on a measurement surface which encloses thesound source. It provides guidelines on the acousticalenvironment, ambient noise, measurement surface, and numberof measurements.
© British Standards Institution 2013
Document identifier notes:Also numbered BS 8482.4:2004.
Also numbered as BS ISO 13347-4
Together with BS ISO 13347-1, BS ISO 13347-2, BS ISO 13447-3,
BS 848-2.1(2004), BS 848-2.2(2004) and BS 848-2.3(2004),
it supersedes BS 848-2(1985)
(08/2004)
Supersedes 02/705656 DC.
(09/2004)
