SIST EN ISO 11691:2009

Oznaka standarda: SIST EN ISO 11691:2009
Koda projekta: 00211154
Organizacija: SIST
Naslov (angleški): Acoustics - Measurement of insertion loss of ducted silencers without flow - Laboratory survey method (ISO 11691:1995)
Naslov (slovenski): Akustika - Merjenje dodanega dušenja dušilnika zvoka v kanalu brez pretoka - Laboratorijska informativna metoda (ISO 11691:1995)
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Ime Jezik Status Cena Dodaj v košarico
SIST EN ISO 11691:2009 angleški jezik Active SIST-D: 48.40 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
Področje projekta (angleško): This International Standard specifies a laboratory substitution 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. This International Standard is applicable to silencers where the design velocity does not exceed 15 m/s. As the method does not include self-generated flow noise, this International Standard is not suitable for tests on silencers where this type of noise is of great importance for the evaluation of the silencer performance. The insertion loss determined according to this International Standard in a laboratory will not necessarily be the same as the insertion loss that will be obtained in an installation in the field. Different sound and flow fields in the duct will yield different results. As this International Standard requires regular test ducts, the results may include some flanking transmission via structural vibrations in the duct walls, that sets an upper limit to the insertion loss that can be determined.
Povezava na standarde
Povezava Ime Datum
Revidiran oSIST prEN ISO 11691:2019 - Akustika - Merjenje dodanega dušenja dušilnika zvoka v kanalu brez pretoka - Laboratorijska informativna metoda (ISO/DIS 11691:2019) 01-jul-2019
Nadomešča SIST EN ISO 11691:1997 - Akustika - Merjenje dodanega dušenja dušilnika zvoka v kanalu brez pretoka - Laboratorijska informativna metoda (ISO 11691:1995) 01-nov-2009


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