I.S. EN ISO 5136:2009
Current
The latest, up-to-date edition.
ACOUSTICS - DETERMINATION OF SOUND POWER RADIATED INTO A DUCT BY FANS AND OTHER AIR-MOVING DEVICES - IN-DUCT METHOD
Hardcopy , PDF
English
01-01-2009
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions and symbols
4 Uncertainty of the measurement method
5 Test facilities and instrumentation
6 Test arrangement
7 Test procedure
8 Calculations
9 Information to be recorded
10 Information to be reported
Annex A (normative) Determination of the combined mean flow
velocity and modal correction C[3,4]
Annex B (normative) Determination of the signal-to-noise ratio
of sound vs. turbulent pressure fluctuation in the test
duct
Annex C (normative) Computational procedures for calculating the
A-weighted sound power level from one-third-octave-band
sound power levels
Annex D (informative) Example of calculation of C[3,4] for a
given duct diameter and mean flow velocity
Annex E (informative) Guidelines for the design and construction
of an anechoic termination
Annex F (informative) Evaluation of performance of anechoic
terminations
Annex G (informative) Sampling tube information
Annex H (informative) Test method for small ducted fans
Annex I (informative) Test method for large ducted fans
Annex J (informative) Measurement of the swirl component
Bibliography
Annex ZA (informative) Relationship between this European Standard
and the Essential Requirements of EU Directive 98/37/EC
Annex ZB (informative) Relationship between this European Standard
and the Essential Requirements of EU Directive 2006/42/EC
Gives a method for testing ducted fans and other air-moving devices to determine the sound power radiated into an anechoically terminated duct on the inlet and/or outlet side of the equipment. Applicable to fans which emit steady, broad-band and discrete-frequency sound and to air temperatures between -50 degrees C and +70 degrees C.
| DevelopmentNote |
Supersedes I.S. EN 25136. (03/2006)
|
| DocumentType |
Standard
|
| Pages |
84
|
| PublisherName |
National Standards Authority of Ireland
|
| Status |
Current
|
| Supersedes |
| Standards | Relationship |
| BS EN ISO 5136:2009 | Identical |
| NF EN ISO 5136 : 2009 | Identical |
| NBN EN ISO 5136 : 2009 | Identical |
| EN ISO 5136:2009 | Identical |
| UNE-EN ISO 5136:2010 | Identical |
| ISO 5136:2003 | Identical |
| NS EN ISO 5136 : 2009 | Identical |
| NEN EN ISO 5136 : 2009 | Identical |
| UNI EN ISO 5136 : 2009 | Identical |
| DIN EN ISO 5136:2009-11 | Identical |
| 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 3743-2:1994 | Acoustics Determination of sound power levels of noise sources using sound pressure Engineering methods for small, movable sources in reverberant fields Part 2: Methods for special reverberation test rooms |
| ISO 7574-4:1985 | Acoustics — Statistical methods for determining and verifying stated noise emission values of machinery and equipment — Part 4: Methods for stated values for batches of machines |
| 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 7574-1:1985 | Acoustics — Statistical methods for determining and verifying stated noise emission values of machinery and equipment — Part 1: General considerations and definitions |
| ISO 5801:2017 | Fans — Performance testing using standardized airways |
| 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 7574-3:1985 | Acoustics — Statistical methods for determining and verifying stated noise emission values of machinery and equipment — Part 3: Simple (transition) method for stated values for batches of machines |
| 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 7235:2003 | Acoustics — Laboratory measurement procedures for ducted silencers and air-terminal units — Insertion loss, flow noise and total pressure loss |
| 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 61260:1995 | Electroacoustics - Octave-band and fractional-octave-band filters |
| IEC 60651:1979+AMD1:1993+AMD2:2000 CSV | Sound level meters |
| ISO 3743-1:2010 | Acoustics Determination of sound power levels and sound energy levels of noise sources using sound pressure Engineering methods for small movable sources in reverberant fields Part 1: Comparison method for a hard-walled test room |
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