NEN-ISO 11820:1994 Ontw. en

Akoestiek - Beproeving van geluiddempers in situ

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Over deze norm

Status Ingetrokken
Aantal pagina's 32
Commissie Akoestiek
Gepubliceerd op 01-02-1994
Taal Engels
This standard specifies silencer measurements in situ. It can be applied to carry out measurements of silencers in practical applications for acoustic analysis, acceptance test and similar evaluations. Results obtained according to this Standard cannot be compared to performance data obtained from laboratory measurements on ducted silencers according to ISO 7235, partly because of different test conditions, such as sound field distribution, flow, temperature and mounting conditions, and partly because of different definitions. This standard is applicable to - silencers which are installed either a a whole or in the form of individual baffles in the propagation path of sound (for example openings of ducts) originating from a sound source (machine, building, plant such as a ga turbine generator, scrubbing plant, cooling tower, HVAC plant, smoke stack, weapon, internal combustion engine, compressor etc.); - all types of passive silencers (absorptive, reactive, reflection and blowdown silence); - active silencers (involving amplifiers and loudspeakers); and - other measures or means of effecting acoustic attenuation in air or other gases (e.g. components installed in ducting, louvres, grilles and deflector hoods). Additionally, this standard is applicable for determining the effect of cleaning or refurbishing silencers.


ICS-code 17.140.20
Nederlandse titel Akoestiek - Beproeving van geluiddempers in situ
Engelse titel Acoustics - Testing of silencers in situ
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