Superseded
Standard
Historical
DIN EN ISO 5135:1999-02
Acoustics - Determination of sound power levels of noise from air-terminal devices, air-terminal units, dampers and valves by measurement in a reverberation room (ISO 5135:1997); German version EN ISO 5135:1998
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Summary
This document allows measurements on equipment during steady-state operation. The volume of the equipment under test must be less than 2% of the volume of the reverberation room used for the test. Measurements can be carried out at constant pressure loss or at constant volume flow rate. The method is based upon ISO 3741 (broad-band noise) and ISO 3742 (noise with narrow-band components), respectively.
Technical characteristics
| Publisher | Deutsche Institut für Normung e.V. (DIN) |
| Publication Date | 02/01/1999 |
| Page Count | 13 |
| EAN | --- |
| ISBN | --- |
| Weight (in grams) | --- |
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