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I.S. EN ISO 11820:1997

Current
Current

The latest, up-to-date edition.

ACOUSTICS - MEASUREMENTS ON SILENCERS IN SITU
Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

01-01-1997

Preview

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.

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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