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EVS-EN ISO 7235:2009

Acoustics - Laboratory measurement procedures for ducted silencers and air-terminal units - Insertion loss, flow noise and total pressure loss

General information

Valid from 08.10.2009
Base Documents
ISO 7235:2003; EN ISO 7235:2009
Directives or regulations
2006/42/EC Machinery (MD)

Standard history

This International Standard specifies methods for determining - the insertion loss, in frequency bands, of ducted silencers with and without airflow, - the sound power level, in frequency bands, of the flow noise (or regenerated sound) generated by ducted silencers, - the total pressure loss of silencers with airflow, and  the transmission loss, in frequency bands, of air-terminal unit

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