當(dāng)前位置： 首頁 > 標(biāo)準(zhǔn)詳情頁

NF EN ISO 7235:2009現(xiàn)行

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

獲取原文如何獲取原文？問客服獲取原文，即可享受本標(biāo)準(zhǔn)狀態(tài)變更提醒服務(wù)！

專家解讀視頻

基本信息

標(biāo)準(zhǔn)編號(hào)： NF EN ISO 7235:2009

發(fā)布時(shí)間：2009/11/1 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(jiǎn)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: S31-127. Supersedes NF ISO 7235. PR NF EN ISO 7235 September 2001. (10/2001) PR NF EN ISO 7235 June 2009. (06/2009) 2004 version is still active. (11/2009)

本標(biāo)準(zhǔn)替代的舊標(biāo)準(zhǔn)

NF EN ISO 7235:2004

NF ISO 7235 : 1991

等同采用的國(guó)際標(biāo)準(zhǔn)

NS EN ISO 7235:2009 - Identical

ONORM EN ISO 7235:2010 - Identical

UNI EN ISO 7235:2009 - Identical

UNE EN ISO 7235:2010 - Identical

SN EN ISO 7235:2010 - Identical

DIN EN ISO 7235 (2010-01) - Identical

BS EN ISO 7235:2009 - Identical

NBN EN ISO 7235:2009 - Identical