CEN ISO/TS 7849-1:2022
(Main)Acoustics - Determination of airborne sound power levels emitted by machinery using vibration measurement - Part 1: Survey method using a fixed radiation factor (ISO/TS 7849-1:2009)
Acoustics - Determination of airborne sound power levels emitted by machinery using vibration measurement - Part 1: Survey method using a fixed radiation factor (ISO/TS 7849-1:2009)
ISO/TS 7849-1:2009 gives basic requirements for reproducible methods for the determination of an upper limit for the A-weighted sound power level of the noise emitted by machinery or equipment by using surface vibration measurements. The method is only applicable to noise which is emitted by vibrating surfaces of solid structures and not to noise generated aerodynamically.
This vibration measurement method is especially applicable in cases where accurate direct airborne noise measurements, e.g. as specified in ISO 3746, ISO 3747, and ISO 9614 (all parts), are not possible because of high background noise or other parasitic environmental interferences; or if a distinction is required between the total radiated sound power and its structure vibration generated component.
The methods described in ISO/TS 7849-1:2009 apply mainly to processes that are stationary with respect to time.
Akustik - Bestimmung der von Maschinen abgestrahlten Luftschallleistungspegel durch Schwingungsmessung - Teil 1: Verfahren der Genauigkeitsklasse 3 mit festem Abstrahlgrad (ISO/TS 7849-1:2009)
Dieser Teil von ISO/TS 7849 enthält grundlegende Anforderungen an reproduzierbare Verfahren zur Bestimmung eines oberen Grenzwerts für den A bewerteten Schallleistungspegel der von Maschinen oder Geräten abgestrahlten Geräusche durch Messung von Oberflächenschwingungen. Das Verfahren ist nur auf Geräusche anwendbar, die von schwingenden Oberflächen fester Körper abgestrahlt werden, nicht aber auf aerodynamisch erzeugte Geräusche.
Dieses Schwingungsmessverfahren ist insbesondere dann anwendbar, wenn genaue direkte Luftschallmessungen, wie in ISO 3746 [7], ISO 3747 [8] und ISO 9614 (alle Teile) [12] festgelegt, aufgrund starker Fremdgeräusche oder anderer störender Umwelteinflüsse nicht möglich sind oder wenn eine Unterscheidung zwischen der gesamten abgestrahlten Schallleistung und ihrer durch Körperschall erzeugten Komponente erforderlich ist.
ANMERKUNG 1 Eine der Anwendungen dieses Teils von ISO/TS 7849 ist die Unterscheidung zwischen der Abstrahlung von Luftschallleistung, die durch Körperschall erzeugt wird, und den aerodynamischen Schallleistungskomponenten. Eine solche Unterscheidung ist mit ISO 3746 [7] und ISO 9614 (alle Teile) [12] nicht möglich.
ANMERKUNG 2 Probleme können auftreten, wenn das Geräusch von kleinen Teilen der Maschinenoberflächen (Schleifkontakte, z. B. Schleifringbürste oder der Kommutator und die Bürste in elektrischen Maschinen) erzeugt wird.
Die in diesem Teil von ISO/TS 7849 beschriebenen Verfahren gelten hauptsächlich für Prozesse, die zeitlich stationär sind.
Acoustique - Détermination des niveaux de puissance acoustique aériens émis par les machines par mesurage des vibrations - Partie 1: Méthode de contrôle employant un facteur de rayonnement fixe (ISO/TS 7849-1:2009)
Akustika - Določanje ravni zvočnih moči v zraku, ki jih povzročajo stroji, z merjenjem vibracij - 1. del: Informativna metoda s fiksnim faktorjem sevanja (ISO/TS 7849-1:2009)
Ta del standarda ISO/TS 7849 podaja osnovne zahteve za ponovljive metode za določanje zgornje meje za A-vrednoteno raven zvočne moči hrupa, ki ga oddajajo stroji ali oprema, z uporabo merjenja vibracij na površinah. Metoda se uporablja samo za hrup, ki ga oddajajo vibrirajoče površine trdnih struktur, in ne za aerodinamično ustvarjeni hrup.
Ta metoda merjenja vibracij se uporablja zlasti v primerih, ko točnih meritev hrupa, ki se prenaša neposredno po zraku, npr. kot je določeno v standardih ISO 3746[7], ISO 3747[8] in ISO 9614 (vsi deli)[12], ni mogoče izvesti zaradi močnega šuma v ozadju ali drugih parazitskih motenj v okolju, ali kadar je treba razlikovati med skupno izsevano zvočno močjo in njeno komponento, ki ustvarja strukturne vibracije.
OPOMBA 1: Ena od aplikacij tega dela standarda ISO/TS 7849 je razlikovanje med sevanjem zvočne moči v zraku, ki jo ustvarjajo strukturne vibracije, in aerodinamičnimi komponentami zvočne moči. Pri standardih ISO 3746[7] in ISO 9614 (vsi deli)[12] takšno razlikovanje ni izvedljivo.
OPOMBA 2: Težave se lahko pojavijo, če hrup ustvarjajo majhni deli površin strojev (drsni kontakti, npr. ščetka na drsnem obroču ali komutator in ščetka v električnih strojih).
Metode, opisane v tem delu standarda ISO/TS 7849, se uporabljajo predvsem za procese, ki so stacionarni glede na čas.
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
kSIST-TS FprCEN ISO/TS 7849-1:2021
01-december-2021
Akustika - Določanje ravni zvočnih moči v zraku, ki jih povzročajo stroji, z
merjenjem vibracij - 1. del: Informativna metoda s fiksnim faktorjem sevanja
(ISO/TS 7849-1:2009)
Acoustics - Determination of airborne sound power levels emitted by machinery using
vibration measurement - Part 1: Survey method using a fixed radiation factor (ISO/TS
7849-1:2009)
Akustik - Bestimmung der von Maschinen abgestrahlten Luftschallleistungspegel durch
Schwingungsmessung - Teil 1: Verfahren der Genauigkeitsklasse 3 mit festem
Strahlungsfaktor (ISO/TS 7849-1:2009)
Acoustique - Détermination des niveaux de puissance acoustique aériens émis par les
machines par mesurage des vibrations - Partie 1: Méthode de contrôle employant un
facteur de rayonnement fixe (ISO/TS 7849-1:2009)
Ta slovenski standard je istoveten z: FprCEN ISO/TS 7849-1
ICS:
17.140.20 Emisija hrupa naprav in Noise emitted by machines
opreme and equipment
17.160 Vibracije, meritve udarcev in Vibrations, shock and
vibracij vibration measurements
kSIST-TS FprCEN ISO/TS 7849-1:2021 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
kSIST-TS FprCEN ISO/TS 7849-1:2021
kSIST-TS FprCEN ISO/TS 7849-1:2021
TECHNICAL ISO/TS
SPECIFICATION 7849-1
First edition
2009-03-15
Acoustics — Determination of airborne
sound power levels emitted by machinery
using vibration measurement —
Part 1:
Survey method using a fixed radiation
factor
Acoustique — Détermination des niveaux de puissance acoustique
aériens émis par les machines par mesurage des vibrations —
Partie 1: Méthode de contrôle employant un facteur de rayonnement
fixe
Reference number
ISO/TS 7849-1:2009(E)
©
ISO 2009
kSIST-TS FprCEN ISO/TS 7849-1:2021
ISO/TS 7849-1:2009(E)
PDF disclaimer
This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but
shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In
downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat
accepts no liability in this area.
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Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation
parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In
the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below.
© ISO 2009
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or
ISO's member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2009 – All rights reserved
kSIST-TS FprCEN ISO/TS 7849-1:2021
ISO/TS 7849-1:2009(E)
Contents Page
Foreword. iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions. 2
4 Principle. 4
5 Measuring instrumentation. 5
5.1 General. 5
5.2 Vibration transducer. 5
5.3 Non-contacting transducers. 5
5.4 Amplifier . 6
5.5 Integrator . 6
5.6 Calibration . 6
6 Installation and operation of source under test . 6
6.1 General. 6
6.2 Description of the machine. 7
6.3 Installation . 7
6.4 Operating conditions. 7
7 Determination of the vibratory velocity on the vibrating measurement surface . 7
7.1 General. 7
7.2 Vibrating measurement surface . 7
7.3 Number of measurement positions . 8
7.4 Environmental conditions. 8
7.5 Measurement procedure . 9
7.6 Mounting of the vibration transducer. 9
8 Calculations. 9
8.1 Correction for extraneous vibratory velocity. 9
8.2 Determination of the mean A-weighted vibratory velocity level on the vibrating
measurement surface. 10
8.3 Calculation of the upper limit of the A-weighted airborne sound power level caused by
radiation of structure vibration generated sound . 11
9 Measurement uncertainty . 11
10 Information to be recorded . 13
10.1 Machine under test . 13
10.2 Measurement conditions . 13
10.3 Measuring instrumentation. 13
10.4 Acoustical data . 13
Annex A (informative) Use of the vibration transducer. 14
Annex B (informative) Guidance on the development of information on measurement uncertainty. 16
Bibliography . 19
kSIST-TS FprCEN ISO/TS 7849-1:2021
ISO/TS 7849-1:2009(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
In other circumstances, particularly when there is an urgent market requirement for such documents, a
technical committee may decide to publish other types of document:
⎯ an ISO Publicly Available Specification (ISO/PAS) represents an agreement between technical experts in
an ISO working group and is accepted for publication if it is approved by more than 50 % of the members
of the parent committee casting a vote;
⎯ an ISO Technical Specification (ISO/TS) represents an agreement between the members of a technical
committee and is accepted for publication if it is approved by 2/3 of the members of the committee casting
a vote.
An ISO/PAS or ISO/TS is reviewed after three years in order to decide whether it will be confirmed for a
further three years, revised to become an International Standard, or withdrawn. If the ISO/PAS or ISO/TS is
confirmed, it is reviewed again after a further three years, at which time it must either be transformed into an
International Standard or be withdrawn.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO/TS 7849-1 was prepared by Technical Committee ISO/TC 43, Acoustics, Subcommittee SC 1, Noise.
This first edition of ISO/TS 7849-1, together with ISO/TS 7849-2, cancel and replace the first edition of
ISO/TR 7849:1987, which has been technically revised.
ISO/TS 7849 consists of the following parts, under the general title Acoustics — Determination of airborne
sound power levels emitted by machinery using vibration measurement:
⎯ Part 1: Survey method using a fixed radiation factor
⎯ Part 2: Engineering method including determination of the adequate radiation factor
The following part is under preparation:
⎯ Part 3: Amplitude and phase measurements
iv © ISO 2009 – All rights reserved
kSIST-TS FprCEN ISO/TS 7849-1:2021
ISO/TS 7849-1:2009(E)
Introduction
This part of ISO/TS 7849 gives a procedure for the determination of the sound power of the airborne noise
caused by machinery vibration.
The determination of airborne noise emission of a machine by measuring vibration of the machine's outer
surface may be of interest when:
⎯ undesired background noise (e.g. noise from other machines or sound reflected by room boundaries) is
high compared with the noise radiated directly by the machine under test;
⎯ noise radiated by structure vibration is to be separated from noise of aerodynamic origin;
⎯ noise radiated by structure vibration is high compared to the aerodynamic component so that the total
noise radiation is predominantly affected by the structure vibration;
[12]
⎯ sound intensity measurement techniques [ISO 9614 (all parts) ] cannot easily be applied;
⎯ structure vibration generated noise from only a part of a machine, or from a component of a machine set,
is to be determined in the presence of noise from the other parts of the whole machine.
ISO/TS 7849 (all parts) describes methods for the determination of the airborne noise emission of a machine
caused by vibration of its outer surface, expressed by the associated A-weighted airborne sound power being
related to normalized meteorological conditions. This airborne sound power is determined under the
assumption that this quantity is proportional to the mean square value of the normal component of the velocity
averaged over the area of the vibrating outer surface of the machine, and is directly proportional to the area of
the vibrating surface.
The calculation of the airborne sound power needs data of the radiation factor in principle. For this part of
ISO/TS 7849 a radiation factor of 1 is assumed allowing the determination of an upper limit for the radiated
A-weighted sound power level. For typical machines this upper limit may exceed the true A-weighted sound
[12]
power level determined by the intensity procedure of ISO 9614 (all parts) by up to 10 dB. The A-weighted
sound power level determined according to this part of ISO/TS 7849 can be used for sound power level
comparison of relevant vibrating machinery noise of the same family with similar design.
...
SLOVENSKI STANDARD
01-julij-2022
Akustika - Določanje ravni zvočnih moči v zraku, ki jih povzročajo stroji, z
merjenjem vibracij - 1. del: Informativna metoda s fiksnim faktorjem sevanja
(ISO/TS 7849-1:2009)
Acoustics - Determination of airborne sound power levels emitted by machinery using
vibration measurement - Part 1: Survey method using a fixed radiation factor (ISO/TS
7849-1:2009)
Akustik - Bestimmung der von Maschinen abgestrahlten Luftschallleistungspegel durch
Schwingungsmessung - Teil 1: Verfahren der Genauigkeitsklasse 3 mit festem
Strahlungsfaktor (ISO/TS 7849-1:2009)
Acoustique - Détermination des niveaux de puissance acoustique aériens émis par les
machines par mesurage des vibrations - Partie 1: Méthode de contrôle employant un
facteur de rayonnement fixe (ISO/TS 7849-1:2009)
Ta slovenski standard je istoveten z: CEN ISO/TS 7849-1:2022
ICS:
17.140.20 Emisija hrupa naprav in Noise emitted by machines
opreme and equipment
17.160 Vibracije, meritve udarcev in Vibrations, shock and
vibracij vibration measurements
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
CEN ISO/TS 7849-1
TECHNICAL SPECIFICATION
SPÉCIFICATION TECHNIQUE
February 2022
TECHNISCHE SPEZIFIKATION
ICS 17.140.20
English Version
Acoustics - Determination of airborne sound power levels
emitted by machinery using vibration measurement - Part
1: Survey method using a fixed radiation factor (ISO/TS
7849-1:2009)
Acoustique - Détermination des niveaux de puissance Akustik - Bestimmung der von Maschinen
acoustique aériens émis par les machines par abgestrahlten Luftschallleistungspegel durch
mesurage des vibrations - Partie 1: Méthode de Schwingungsmessung - Teil 1: Verfahren der
contrôle employant un facteur de rayonnement fixe Genauigkeitsklasse 3 mit festem Strahlungsfaktor
(ISO/TS 7849-1:2009) (ISO/TS 7849-1:2009)
This Technical Specification (CEN/TS) was approved by CEN on 7 February 2022 for provisional application.
The period of validity of this CEN/TS is limited initially to three years. After two years the members of CEN will be requested to
submit their comments, particularly on the question whether the CEN/TS can be converted into a European Standard.
CEN members are required to announce the existence of this CEN/TS in the same way as for an EN and to make the CEN/TS
available promptly at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in
parallel to the CEN/TS) until the final decision about the possible conversion of the CEN/TS into an EN is reached.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN ISO/TS 7849-1:2022 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
The text of ISO/TS 7849-1:2009 has been prepared by Technical Committee ISO/TC 43 "Acoustics” of
the International Organization for Standardization (ISO) and has been taken over as CEN ISO/TS 7849-
1:2022 by Technical Committee CEN/TC 211 “Acoustics” the secretariat of which is held by DIN.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to announce this Technical Specification: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO/TS 7849-1:2009 has been approved by CEN as CEN ISO/TS 7849-1:2022 without any
modification.
TECHNICAL ISO/TS
SPECIFICATION 7849-1
First edition
2009-03-15
Acoustics — Determination of airborne
sound power levels emitted by machinery
using vibration measurement —
Part 1:
Survey method using a fixed radiation
factor
Acoustique — Détermination des niveaux de puissance acoustique
aériens émis par les machines par mesurage des vibrations —
Partie 1: Méthode de contrôle employant un facteur de rayonnement
fixe
Reference number
ISO/TS 7849-1:2009(E)
©
ISO 2009
ISO/TS 7849-1:2009(E)
PDF disclaimer
This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but
shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In
downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat
accepts no liability in this area.
Adobe is a trademark of Adobe Systems Incorporated.
Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation
parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In
the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below.
© ISO 2009
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or
ISO's member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2009 – All rights reserved
ISO/TS 7849-1:2009(E)
Contents Page
Foreword. iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions. 2
4 Principle. 4
5 Measuring instrumentation. 5
5.1 General. 5
5.2 Vibration transducer. 5
5.3 Non-contacting transducers. 5
5.4 Amplifier . 6
5.5 Integrator . 6
5.6 Calibration . 6
6 Installation and operation of source under test . 6
6.1 General. 6
6.2 Description of the machine. 7
6.3 Installation . 7
6.4 Operating conditions. 7
7 Determination of the vibratory velocity on the vibrating measurement surface . 7
7.1 General. 7
7.2 Vibrating measurement surface . 7
7.3 Number of measurement positions . 8
7.4 Environmental conditions. 8
7.5 Measurement procedure . 9
7.6 Mounting of the vibration transducer. 9
8 Calculations. 9
8.1 Correction for extraneous vibratory velocity. 9
8.2 Determination of the mean A-weighted vibratory velocity level on the vibrating
measurement surface. 10
8.3 Calculation of the upper limit of the A-weighted airborne sound power level caused by
radiation of structure vibration generated sound . 11
9 Measurement uncertainty . 11
10 Information to be recorded . 13
10.1 Machine under test . 13
10.2 Measurement conditions . 13
10.3 Measuring instrumentation. 13
10.4 Acoustical data . 13
Annex A (informative) Use of the vibration transducer. 14
Annex B (informative) Guidance on the development of information on measurement uncertainty. 16
Bibliography . 19
ISO/TS 7849-1:2009(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
In other circumstances, particularly when there is an urgent market requirement for such documents, a
technical committe
...
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