I.S. EN ISO 11820:1997
Current
The latest, up-to-date edition.
ACOUSTICS - MEASUREMENTS ON SILENCERS IN SITU
Hardcopy , PDF
English
01-01-1997
For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.
Only cited Standards give presumption of conformance to New Approach Directives/Regulations.
Dates of withdrawal of national standards are available from NSAI.
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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
Covers measurements on silencers in situ. Also applies to measurements on silencers in practical applications for acoustic analysis, acceptance tests and similar evaluations.
| DocumentType |
Standard
|
| Pages |
34
|
| PublisherName |
National Standards Authority of Ireland
|
| Status |
Current
|
| Standards | Relationship |
| BS EN ISO 11820:1997 | Identical |
| UNE-EN ISO 11820:1997 | Identical |
| DIN EN ISO 11820:1997-04 | Identical |
| EN ISO 11820:1996 | Identical |
| ISO 11820:1996 | Identical |
| UNI EN ISO 11820 : 1999 | Identical |
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