EN ISO 9614-3:2009

Acoustics - Determination of sound power levels of noise sources using sound intensity - Part 3: Precision method for measurement by scanning (ISO 9614-3:2002)

ISO 9614-3:2002 specifies a method for measuring the component of sound intensity normal to a measurement surface which is chosen so as to enclose the sound source(s) of which the sound power level is to be determined.
Surface integration of the intensity component normal to the measurement surface is approximated by subdividing the measurement surface into contiguous partial surfaces, and scanning the intensity probe over each partial surface along a continuous path which covers the extent of the partial surface. The measurement instrument determines the averaged normal intensity component and averaged squared sound pressure over the duration of each scan. The scanning operation can be performed either manually or by means of a mechanical system.
The octave band or band-limited weighted sound power level is calculated from the measured one-third-octave- band values. The method is applicable to any source for which a physically stationary measurement surface can be defined, and on which the sound generated by the source under test and by other significant extraneous sources are stationary in time. The source is defined by the choice of measurement surface. The method is applicable in specific test environments fulfilling all relevant requirements of ISO 9614-3.
ISO 9614-3 specifies certain ancillary procedures, described in annex C, to be followed in conjunction with the sound power determination. The results are used to indicate the quality of the determination, and hence the grade of accuracy. If the quality of the determination does not meet the requirements of ISO 9614-3, the test procedure shall be modified in the manner indicated.
ISO 9614-3 is not applicable to any frequency band in which the sound power of the source is found to be negative on measurement.
It is applicable to sources situated in any environment which is neither so variable over time as to reduce the accuracy of the measurement of sound intensity to an unacceptable degree, nor subjects the intensity measurement probe to gas flows of unacceptable speed or unsteadiness.
In some cases it will be found that the test conditions are too adverse to allow the requirements of ISO 9614-3 to be met. For example, extraneous noise levels can exceed the dynamic capability of the measuring instrument or can vary to an excessive degree during the test. In such cases the method given in ISO 9614-3 is not suitable for the determination of the sound power level of the source.

Akustik - Bestimmung der Schallleistungspegel von Geräuschquellen aus Schallintensitätsmessungen - Teil 3: Scanning-Verfahren der Genauigkeitsklasse 1 (ISO 9614-3:2002)

1.1 Dieser Teil von ISO 9614 legt ein Verfahren fest zur Messung der zu einer Messfläche senkrechten
Komponente der Schallintensität. Dabei wird die Messfläche so gewählt, dass sie die Schallquelle(n), deren
Schallleistungspegel bestimmt werden soll, umschließt.
Die Flächenintegration der zur Messfläche senkrechten Intensitätskomponente wird durch eine Unterteilung
der Messfläche in aneinander angrenzende Teilflächen und das Scannen jeder Teilfläche durch die auf einem
stetigen, die gesamte Teilfläche abdeckenden Messpfad bewegte Intensitätsmesssonde angenähert. Das
Messgerät bestimmt die über den gesamten Scan-Vorgang gemittelte Normalkomponente der Schallintensität
und das gemittelte Schalldruckquadrat. Das Scannen kann manuell oder mechanisiert durchgeführt werden.
Der Oktavband- oder bandbegrenzte bewertete Schallleistungspegel wird aus den gemessenen Terzbandwerten
berechnet. Das Verfahren ist auf jede Quelle anwendbar, für die eine physikalisch konstante Messfläche
festgelegt werden kann und bei der der von der zu untersuchenden Quelle und von anderen
signifikanten Fremdschallquellen abgestrahlte Schall zeitlich stationär ist. Die Quelle ist durch die Wahl der
Messfläche definiert. Das Verfahren kann in speziellen Messumgebungen, die alle der in diesem Teil von
ISO 9614 festgelegten relevanten Anforderungen erfüllen, angewendet werden.
Dieser Teil von ISO 9614 legt bestimmte, in Anhang C beschriebene Zusatzverfahren fest, die in Zusammenhang
mit der Schallleistungsbestimmung durchzuführen sind. Die Ergebnisse werden dazu verwendet, die
Qualität der Schallleistungsbestimmung und somit die Genauigkeitsklasse zu ermitteln. Wenn die Qualität der
Bestimmungen die Anforderungen dieses Teils von ISO 9614 nicht erfüllt, ist das Messverfahren in der hierin
angegebenen Weise zu verändern.
Dieser Teil von ISO 9614 ist nicht in Frequenzbändern anwendbar, in denen die Messung eine negative
Schallleistung der Quelle ausweist.

Acoustique - Détermination par intensimétrie des niveaux de puissance acoustique émis par les sources de bruit - Partie 3: Méthode de précision pour mesurage par balayage (ISO 9614-3:2002)

La présente partie de l'ISO 9614 prescrit une méthode de mesurage de la composante de l'intensité acoustique normale à une surface de mesurage entourant la(les) source(s) de bruit dont le niveau de puissance acoustique est à déterminer.
L'intégration sur la surface de mesurage de la composante de l'intensité normale à la surface est approchée en divisant la surface de mesurage en éléments contigus et en passant la sonde d'intensité sur chaque élément de surface le long d'une trajectoire continue qui couvre l'étendue de l'élément de surface. L'instrument de mesure détermine la composante de l'intensité normale moyenne et la pression acoustique quadratique moyenne sur la durée de chaque balayage. L'opération de balayage peut être effectuée soit manuellement, soit au moyen d'un système mécanique.
Le niveau de puissance acoustique par bandes d'octave, ou le niveau pondéré sur une plage de fréquences limitée est calculé à partir des valeurs mesurées par bandes de tiers d'octave. La méthode est applicable à toute source pour laquelle on peut définir une surface de mesurage physiquement stationnaire et sur laquelle les signaux acoustiques émis par la source en essai et par les sources parasites significatives sont stables dans le temps. La source est définie par le choix de la surface de mesurage. La méthode peut être appliquée dans des environnements d'essai particuliers, satisfaisant aux exigences de la présente partie de l'ISO 9614.
La présente partie de l'ISO 9614 prescrit certaines procédures complémentaires décrites dans l'annexe C, à appliquer lors de la détermination de la puissance acoustique. Les résultats obtenus indiquent la qualité de la détermination et donc la classe de précision de la méthode. Si la qualité de la détermination n'est pas conforme aux exigences de la présente partie de l'ISO 9614, la méthode d'essai doit être modifiée de la façon indiquée.
La présente partie de l'ISO 9614 ne s'applique pas aux bandes de fréquences dans lesquelles la puissance acoustique de la source mesurée est négative.
La présente partie de l'ISO 9614 s'applique aux sources situées dans un environnement quelconque mais dont la variabilité temporelle reste suffisamment faible pour que la précision de la mesure de l'intensité acoustique reste acceptable, et dans lequel la sonde intensimétrique n'est pas soumise à des flux gazeux d'une vitesse ou d'une instabilité inacceptable (voir 5.2.2, 5.3 et 5.4).
Dans certains cas, les conditions d'essai se révéleront trop défavorables pour que les exigences de la présente partie de l'ISO 9614 puissent être respectées. Les niveaux de bruit parasite peuvent dépasser la capacité dynamique de l'instrument de mesure ou peuvent varier de façon excessive pendant l'essai. Dans de tels cas, la méthode donnée dans la présente partie de l'ISO 9614 ne convient pas pour déterminer le niveau de puissance acoustique de la source.

Akustika - Ugotavljanje ravni zvočnih moči virov hrupa z merjenjem jakosti zvoka - 3. del: Precizijska metoda zveznega merjenja po ploskvi (ISO 9614-3:2002)

General Information

• Status: Published
• Publication Date: 04-Aug-2009
• Withdrawal Date: 27-Feb-2010
• ICS: 17.140.01 - Acoustic measurements and noise abatement in general
• ICS: 17.140.20 - Noise emitted by machines and equipment
• Technical Committee: CEN/TC 211 - Acuostics
• Drafting Committee: CEN/TC 211 - Acuostics
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 05-Aug-2009
• Due Date: 25-Sep-2010
• Completion Date: 05-Aug-2009
• Directive: 2006/42/EC - Directive 2006/42/EC of the European Parliament and of the Council of 17 May 2006 on machinery, and amending Directive 95/16/EC (recast)
• Directive: 98/37/EC - Machinery
• Mandate: M/079 - Mandate to CEN and CENELEC for standardization in the field of machines
• Ref Project: SIST EN ISO 9614-3:2009 - Acoustics - Determination of sound power levels of noise sources using sound intensity - Part 3: Precision method for measurement by scanning (ISO 9614-3:2002)

Relations

• Replaces: EN ISO 9614-3:2002 - Acoustics - Determination of sound power levels of noise sources using sound intensity - Part 3: Precision method for measurement by scanning (ISO 9614-3:2002)
• Effective Date: 08-Aug-2009

Standards Content (Sample)

SLOVENSKI STANDARD
01-november-2009
1DGRPHãþD
SIST EN ISO 9614-3:2003
$NXVWLND8JRWDYOMDQMHUDYQL]YRþQLKPRþLYLURYKUXSD]PHUMHQMHPMDNRVWL]YRND
GHO3UHFL]LMVNDPHWRGD]YH]QHJDPHUMHQMDSRSORVNYL,62
Acoustics - Determination of sound power levels of noise sources using sound intensity -
Part 3: Precision method for measurement by scanning (ISO 9614-3:2002)
Akustik - Bestimmung der Schallleistungspegel von Geräuschquellen aus
Schallintensitätsmessungen - Teil 3: Scanning-Verfahren der Genauigkeitsklasse 1 (ISO
9614-3:2002)
Acoustique - Détermination par intensimétrie des niveaux de puissance acoustique émis
par les sources de bruit - Partie 3: Méthode de précision pour mesurage par balayage
(ISO 9614-3:2002)
Ta slovenski standard je istoveten z: EN ISO 9614-3:2009
ICS:
17.140.01 $NXVWLþQDPHUMHQMDLQ Acoustic measurements and
EODåHQMHKUXSDQDVSORãQR noise abatement in general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 9614-3
NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2009
ICS 17.140.01 Supersedes EN ISO 9614-3:2002
English Version
Acoustics - Determination of sound power levels of noise
sources using sound intensity - Part 3: Precision method for
measurement by scanning (ISO 9614-3:2002)
Acoustique - Détermination par intensimétrie des niveaux Akustik - Bestimmung der Schallleistungspegel von
de puissance acoustique émis par les sources de bruit - Geräuschquellen aus Schallintensitätsmessungen - Teil 3:
Partie 3: Méthode de précision pour mesurage par Scanning-Verfahren der Genauigkeitsklasse 1 (ISO 9614-
balayage (ISO 9614-3:2002) 3:2002)
This European Standard was approved by CEN on 20 July 2009.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the CEN Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the
official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2009 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 9614-3:2009: E
worldwide for CEN national Members.

Contents Page
Foreword .3
Annex ZA (informative) Relationship between this European Standard and the Essential
Requirements of EU Directive 98/37/EC .4
Annex ZB (informative) Relationship between this European Standard and the Essential
Requirements of EU Directive 2006/42/EC .5

Foreword
The text of ISO 9614-3:2002 has been prepared by Technical Committee ISO/TC 43 “Acoustics” of the
International Organization for Standardization (ISO) and has been taken over as EN ISO 9614-3:2009 by
Technical Committee CEN/TC 211 “Acoustics” the secretariat of which is held by DS.
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by February 2010, and conflicting national standards shall be withdrawn
at the latest by February 2010.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 9614-3:2002.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association, and supports essential requirements of EC Directives.
For relationship with EC Directives, see informative Annexes ZA and ZB, which are integral parts of this
document.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
Endorsement notice
The text of ISO 9614-3:2002 has been approved by CEN as a EN ISO 9614-3:2009 without any modification.
Annex ZA
(informative)
Relationship between this European Standard and the Essential
Requirements of EU Directive 98/37/EC
This European Standard has been prepared under a mandate given to CEN by the European Commission
and the European Free Trade Association to provide a means of conforming to Essential Requirements of the
New Approach Directive 98/37/EC, amended by 98/79/EC on machinery.
Once this standard is cited in the Official Journal of the European Communities under that Directive and has
been implemented as a national standard in at least one Member State, compliance with the normative
clauses of this standard confers, within the limits of the scope of this standard, a presumption of conformity
with the relevant Essential Requirements of that Directive and associated EFTA regulations.
WARNING - Other requirements and other EU Directives may be applicable to the product(s) falling within the
scope of this standard.
Annex ZB
(informative)
Relationship between this European Standard and the Essential
Requirements of EU Directive 2006/42/EC
This European Standard has been prepared under a mandate given to CEN by the European Commission
and the European Free Trade Association to provide a means of conforming to Essential Requirements of the
New Approach Directive 2006/42/EC on machinery.
Once this standard is cited in the Official Journal of the European Communities under that Directive and has
been implemented as a national standard in at least one Member State, compliance with the normative
clauses of this standard confers, within the limits of the scope of this standard, a presumption of conformity
with the relevant Essential Requirements of that Directive and associated EFTA regulations.
WARNING — Other requirements and other EU Directives may be applicable to the product(s) falling within
the scope of this standard.
INTERNATIONAL ISO
STANDARD 9614-3
First edition
2002-11-01
Acoustics — Determination of sound power
levels of noise sources using sound
intensity —
Part 3:
Precision method for measurement by
scanning
Acoustique — Détermination par intensimétrie des niveaux de puissance
acoustique émis par les sources de bruit —
Partie 3: Méthode de précision pour mesurage par balayage

Reference number
ISO 9614-3:2002(E)
©
ISO 2002
ISO 9614-3:2002(E)
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ISO 9614-3:2002(E)
Contents Page
Foreword . v
Introduction. vi
1 Scope. 1
2 Normative references. 1
3 Terms and definitions. 2
4 General requirements. 7
4.1 Size of sound source under test. 7
4.2 Character of sound radiated by the source. 7
4.3 Measurement uncertainty. 7
5 Acoustic environment. 9
5.1 Criteria for adequacy of the test environment . 9
5.2 Extraneous intensity. 9
5.3 Wind and gas flows. 9
5.4 Temperature. 9
5.5 Configuration of the surroundings. 9
5.6 Atmospheric conditions. 9
6 Instrumentation. 10
6.1 General. 10
6.2 Calibration and field check. 10
6.3 Time-series of sound intensity and sound pressure. 10
7 Installation and operation of the source. 10
7.1 General. 10
7.2 Operating conditions of the source under test. 11
8 Measurement of normal sound intensity component levels . 11
8.1 Determination of measurement surface . 11
8.2 Determination of scanning paths and segments. 11
8.3 Measurements. 12
8.4 Further actions. 14
9 Determination of sound power level . 15
9.1 Calculation of partial sound powers for each partial surface of the measurement surface. 15
9.2 Calculation of normalized sound power level. 15
...