UNI EN ISO 11820 : 1999
Current
The latest, up-to-date edition.
ACOUSTICS - MEASUREMENTS ON SILENCERS IN SITU
01-31-1999
1 Scope
2 Normative references
3 Definitions
4 Corrections for background noise
4.1 Transmission sound pressure level difference
4.2 Insertion sound pressure level difference
5 Installation conditions
6 Measuring instruments
6.1 Acoustic instruments
6.2 Air flow, static pressure and temperature
measuring devices
7 Test object and measuring conditions
8 Measurement procedures
8.1 General
8.2 Acoustic measurements
8.3 Flow, pressure and temperature measurements
9 Evaluation
9.1 Evaluation of sound pressure measurements
9.2 Evaluation of flow measurements
10 Information to be recorded
11 Information to be reported
Annexes
A Field corrections
B Calibration of directional microphones and microphones
equipped with a turbulence windscreen
C Bibliography
Defines measurements on silencers in situ. Applies to measurements on silencers in practical applications for acoustic analysis, acceptance tests and similar evaluations.
| Committee |
CT 2
|
| DocumentType |
Standard
|
| PublisherName |
Ente Nazionale Italiano di Unificazione (UNI)
|
| Status |
Current
|
| Standards | Relationship |
| UNE-EN ISO 11820:1997 | Identical |
| EN ISO 11820:1996 | Identical |
| ISO 11820:1996 | Identical |
| I.S. EN ISO 11820:1997 | Identical |
| NS EN ISO 11820 : 1ED 1997 | Identical |
| BS EN ISO 11820:1997 | Identical |
| SN EN ISO 11820 : 1997 | Identical |
| NEN EN ISO 11820 : 1997 | Identical |
| NBN EN ISO 11820 : 1997 | Identical |
| NF EN ISO 11820 : 1997 | Identical |
| DIN EN ISO 11820:1997-04 | Identical |
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