ISO 13347-4 : 2004(R2004)现行
INDUSTRIAL FANS - DETERMINATION OF FAN SOUND POWER LEVELS UNDER STANDARDIZED LABORATORY CONDITIONS - PART 4: SOUND INTENSITY METHOD
出版：International Organization for Standardization
专家解读视频
Applicable to industrial fans as defined in ISO 5801 and ISO 13349. Determines sound power by using sound intensity measurements on a measurement surface which encloses the sound source. It provides guidelines on the acoustical environment, ambient noise, measurement surface, and number of measurements.
NF ISO 13347-4 : 2004 - Identical
DS ISO 13347-4 : 2004 - Identical
NEN ISO 13347-4 : 2004 C1 2006 - Identical
