NBN EN ISO 7235:2009现行
Acoustics - Laboratory Measurement Procedures For Ducted Silencers And Air-Terminal Units - Insertion Loss, Flow Noise And Total Pressure Loss
出版：Belgian 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.
Supersedes NBN ISO 7235 (11/2003)
BS EN ISO 7235:2009 - Identical
I.S. EN ISO 7235:2009 - Identical
NEN EN ISO 7235:2009 - Identical
UNI EN ISO 7235:2009 - Identical
NF EN ISO 7235:2009 - Identical
DIN EN ISO 7235 (2010-01) - Identical
NS EN ISO 7235:2009 - Identical
ONORM EN ISO 7235:2010 - Identical
SS EN ISO 7235 Ed. 3 (2009) - Identical
UNE EN ISO 7235:2010 - Identical
SN EN ISO 7235:2010 - Identical
