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ISO 7235:2003

Acoustics — Laboratory measurement procedures for ducted silencers and air-terminal units — Insertion loss, flow noise and total pressure loss
28. 8. 2003.

Опште информације

90.92     23. 1. 2025.

ISO

ISO/TC 43/SC 1

Međunarodni standard

91.120.20  

engleski   francuski  

Kupovina

Objavljen

Jezik na kome želite da primite dokument.

Apstrakt

ISO 7235:2003 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, andthe 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 ISO 7235:2003 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.
ISO 7235:2003 is applicable to all types of silencer including silencers for ventilating and air-conditioning 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.
It is not applicable to reactive silencers used for motor vehicles.

Životni ciklus

PRETHODNO

POVUČEN
ISO 7235:1991

TRENUTNO

OBJAVLJEN
ISO 7235:2003
90.92 Odluka o izmeni ili reviziji standarda
23. 1. 2025.

REVIDIRAN OD

NAPUŠTEN
ISO/PWI 7235

PROJEKAT
ISO/AWI 7235

Nacionalna preuzimanja

Akustika — Postupci laboratorijskog merenja za prigušivače i izlazne jedinice ventilacionih kanala — Slabljenje nivoa zvučne snage, buka protoka i slabljenje ukupnog pritiska

60.60   Standard objavljen