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I.S. EN ISO 5136:2009

I.S. EN ISO 5136:2009

Current

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

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

01-01-2009

Publisher

National Standards Authority of Ireland

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.


Dates of withdrawal of national standards are available from NSAI.

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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