40.20 DIS ballot initiated: 12 weeks Sep 13, 2024
ISO
ISO/TC 117 Fans
International Standard
23.120 Ventilators. Fans. Air-conditioners | 17.140.20 Noise emitted by machines and equipment
ISO 13347-2:2004 gives a detailed description of reverberant room methods for the determination of fan sound power levels. It is for use under standardized laboratory conditions and recognises that tests in situ are subject to increased uncertainty. These test procedures are not necessarily appropriate to site test conditions. Acoustic system effects are presently the subject of considerable research effort.
ISO 5136, which covers the in-duct method, and ISO 10302 for small fans, should be used in conjunction with ISO 13347-2:2004.
IN_DEVELOPMENT
ISO/DIS 13347-2
40.20
DIS ballot initiated: 12 weeks
Sep 13, 2024