SIST EN ISO 7235:2009

Oznaka standarda: SIST EN ISO 7235:2009
Koda projekta: 00211143
Organizacija: SIST
Naslov (angleški): Acoustics - Laboratory measurement procedures for ducted silencers and air-terminal units - Insertion loss, flow noise and total pressure loss (ISO 7235:2003)
Naslov (slovenski): Akustika - Laboratorijski merilni postopki za dušilnike v kanalih in elementih za dovod in odvod zraka - Dodano dušenje, hrup zaradi pretoka in padec celotnega tlaka (ISO 7235:2003)
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SIST EN ISO 7235:2009 angleški jezik Active SIST-J: 96.80 EUR
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Tehnični odbor: AKU - Akustika
ICS: 17.140.01 91.120.20 91.140.30
Status: Objavljen
Objavljen: 01-Nov-2009
Refer. št. objave: Sporočila 2009-11
Referenčna oznaka: EN ISO 7235:2009
Področje projekta (angleško): 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 units. The measurement procedures are intended for laboratory measurements at ambient temperature. Measurements on silencers in situ are specified in ISO 11820. It is to be noted that the results determined in a laboratory according to this International Standard will not necessarily be the same as those obtained in situ (installation), as different sound and flow fields will yield different results. For example, the pressure loss will be lower under laboratory conditions than in situ, but will be comparable between different laboratories. This International Standard is applicable to all types of silencer including silencers for ventilating and airconditioning systems, air intake and exhaust of flue gases, and similar applications. Other passive air-handling devices, such as bends, air-terminal units or T-connectors, can also be tested using this International Standard.
Povezava na standarde
Povezava Ime Datum
Nadomešča SIST EN ISO 7235:2004 - Akustika – Laboratorijski merilni postopki za dušilnike v kanalih in elementih za dovod in odvod zraka - Dodano dušenje, hrup zaradi pretoka in padec celotnega tlaka (ISO 7235:2003) 01-Nov-2009


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