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EN ISO 11691:2009 Standard

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  Keywords:

#iso #method #survey #laboratory #flow

  Directive

Machinery Regulation ((EU) 2023/1230)

  Last Official Journal reference

Thursday 12th of March 2026

  Description:

Acoustics - Measurement of insertion loss of ducted silencers without flow - Laboratory survey method (ISO 11691:1995)

  Purpose

This  International  Standard  specifies  a  laboratory  sub- stitution  method  to  determine  the  insertion  loss without  flow  of  ducted,  mainly  absorbent,  circular  and rectangular  silencers,  as  well  as  other  duct  elements for  use  in  ventilating  and  air-conditioning  systems.

  Publication

Tuesday 29th of December 2009

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