Standard

NEN-EN-ISO 7235:2001 Ontw. en

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

  • This norm is withdrawn since 29-02-2004

44,69

About norm

Status Withdrawn
Number of pages 56
Committee Akoestiek
Published on 01-07-2001
Language English
Specifies methods for determining - the insertion loss, in frequency bands, of ducted silencers with or without air flow; - the sound power level, in frequency bands, of the flow noise generated by silencers; - the total pressure loss of silencers with air flow. The measurement procedures are intended for laboratory measurements on silencers but may also be used for in situ measurements on silencers if the requirements of this International Standard can be met. This International Standard applies to silencers for ventilating and air-conditioning systems, which are usually connected to ducts or splitter absorbers mounted in ducts. Other duct elements, such as bends or T-connectors, may also be tested using this International Standard.

Details

ICS-code 91.120.20
Dutch title Akoestiek - Laboratorium meetprocedures voor geluiddempers in kanalen en luchtverdeelsystemen - Tussenschakelverzwakking, stromingsgeluid en totaal drukverlies
English title Acoustics - Laboratory measurement procedures for ducted silencers and air-terminal units - Insertion loss, flow noise and total pressure loss
Replaces
Replaced by
Normative references
  • 98/79/EG, In vitro diagnostica

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