SN EN ISO 7235:2003被替代
Acoustics - Laboratory Measurement Procedures For Ducted Silencers And Air-terminal Units - Insertion Loss, Flow Noise And Total Pressure Loss
出版：Swiss Standards
专家解读视频
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.
ONORM EN ISO 7235:2003 - Identical
DIN EN ISO 7235 (2004-02) - Identical
BS EN ISO 7235:2003 - Identical
NEN EN ISO 7235:2003 - Identical
UNI EN ISO 7235:2005 - Identical
NEN EN ISO 7235:2009 - Identical
UNI EN ISO 7235:2009 - Identical
NF EN ISO 7235:2009 - Identical
NS EN ISO 7235:2009 - Identical
ONORM EN ISO 7235:2010 - Identical
SS EN ISO 7235 Ed. 3 (2009) - Identical
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
NF EN ISO 7235:2004 - Identical
UNI EN ISO 7235:1997 - Identical
I.S. EN ISO 7235:2003 - Identical
NBN EN ISO 7235:2003 - Identical
