BS ISO 10494:1993
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
View Superseded by
Gas turbines and gas turbine sets. Measurement of emitted airborne noise. Engineering/survey method
Hardcopy , PDF
04-20-2018
English
11-14-2003
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National foreword
Introduction
1 Scope
2 Normative references
3 Definitions
4 Acoustic environment
5 Instrumentation
6 Object under test and test conditions
7 Sound pressure levels on the measurement surface
8 Calculation of surface pressure level, sound power
level and directivity factor
9 Information to be recorded
10 Test report
Annex A (normative) Qualification procedures for the
acoustic environment
Annex B (informative) Examples of suitable instrumentation
systems
Annex C (informative) Calculation of directivity index and
directivity factor using a hemispherical microphone
array
Annex D (informative) Bibliography
Gives methods for measuring the sound pressure levels on a measurement surface enveloping a source, and calculating the sound power level which is produced by the source. Specifies requirements for the test environment and instrumentation. Applicable to gas turbines and gas turbine sets for industrial applications, for installation on board ships or offshore installations, road and railway vehicles.
| Committee |
MCE/16
|
| DevelopmentNote |
Supersedes 91/76849 DC. (11/2003) Renumbers and supersedes BS 7721(1994). 1993 version incorporates amendment 14748 to BS 7721(1994) (11/2003)
|
| DocumentType |
Standard
|
| Pages |
28
|
| PublisherName |
British Standards Institution
|
| Status |
Superseded
|
| SupersededBy | |
| Supersedes |
| Standards | Relationship |
| ISO 10494:1993 | Identical |
| ISO 3742:1988 | Acoustics — Determination of sound power levels of noise sources — Precision methods for discrete-frequency and narrow-band sources in reverberation rooms |
| ISO 2204:1979 | Acoustics Guide to International Standards on the measurement of airborne acoustical noise and evaluation of its effects on human beings |
| ISO 3744:2010 | Acoustics Determination of sound power levels and sound energy levels of noise sources using sound pressure Engineering methods for an essentially free field over a reflecting plane |
| ISO 354:2003 | Acoustics — Measurement of sound absorption in a reverberation room |
| IEC 60942:2003 | Electroacoustics - Sound calibrators |
| ISO 266:1997 | Acoustics — Preferred frequencies |
| ISO 3740:2000 | Acoustics Determination of sound power levels of noise sources Guidelines for the use of basic standards |
| ISO 3746:2010 | Acoustics Determination of sound power levels and sound energy levels of noise sources using sound pressure Survey method using an enveloping measurement surface over a reflecting plane |
| ISO 2314:2009 | Gas turbines — Acceptance tests |
| IEC 60225:1966 | Octave, half-octave and third-octave band filters intended for the analysis of sounds and vibrations |
| ISO 6926:2016 | Acoustics Requirements for the performance and calibration of reference sound sources used for the determination of sound power levels |
| ISO 3977:1991 | Gas turbines — Procurement |
| ISO 3741:2010 | Acoustics Determination of sound power levels and sound energy levels of noise sources using sound pressure Precision methods for reverberation test rooms |
| ISO 3745:2012 | Acoustics — Determination of sound power levels and sound energy levels of noise sources using sound pressure — Precision methods for anechoic rooms and hemi-anechoic rooms |
| IEC 60651:1979+AMD1:1993+AMD2:2000 CSV | Sound level meters |
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