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NF EN ISO 7235:2004被替代

Acoustics - Laboratory Measurement Procedures For Ducted Silencers And Air-terminal Units - Insertion Loss, Flow Noise And Total Pressure Loss

出版：Association Francaise de Normalisation

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基本信息

標(biāo)準(zhǔn)編號： NF EN ISO 7235:2004

發(fā)布時間：2004/2/1 0:00:00

標(biāo)準(zhǔn)類別：Standard

出版單位：Association Francaise de Normalisation

標(biāo)準(zhǔn)頁數(shù)：60

標(biāo)準(zhǔn)簡介

Specifies the substitution method for determining the insertion loss of ducted silencers. Sets out the requirements for determining: the sound power level, in frequency bands, of the flow noise generated by silencers; the insertion loss, in frequency bands, of silencers with and without air flow; the total pressure loss of silencers with air flow. Applies to silencers for ventilating and air-conditioning systems which are usually connected to ducts or splitter absorbers mounted in ducts.

標(biāo)準(zhǔn)備注

Indice de classement: S31-127PR. Supersedes NF ISO 7235. PR NF EN ISO 7235 September 2001. (10/2001) PR NF EN ISO 7235 June 2009. (06/2009)

替代本標(biāo)準(zhǔn)的新標(biāo)準(zhǔn)

NF EN ISO 7235:2009

等同采用的國際標(biāo)準(zhǔn)

SS EN ISO 7235 Ed. 2 (2004) - Identical

UNE EN ISO 7235:2004 - Identical

ISO 7235:2003 - Identical

NS EN ISO 7235 Ed. 2 (2003) - Identical

UNI EN ISO 7235:1997 - Identical

I.S. EN ISO 7235:2003 - Identical

NBN EN ISO 7235:2003 - Identical