Acoustics - Determination of airborne sound power levels emitted by machinery using vibration measurement - Part 2: Engineering method including determination of the adequate radiation factor (ISO/TS 7849-2:2009)

ISO/TS 7849-2:2009 gives basic requirements for a reproducible method for the determination of the sound power level of the noise emitted by machinery or equipment by using surface vibration measurements, together with the knowledge of the machinery specific sound radiation factor in the frequency bands. 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 7849-2:2009 apply mainly to processes that are stationary with respect to time.
Recommendations on the selection of frequency bands are given in an annex.

Akustik - Bestimmung der von Maschinen abgestrahlten Luftschallleistungspegel durch Schwingungsmessung - Teil 2: Verfahren der Genauigkeitsklasse 2 einschließlich Bestimmung des geeigneten Abstrahlgrads (ISO/TS 7849-2:2009)

Acoustique - Détermination des niveaux de puissance acoustique aériens émis par les machines par mesurage des vibrations - Partie 2: Méthode d'expertise incluant la détermination d'un facteur de rayonnement approprié (ISO/TS 7849-2:2009)

Akustika - Določanje ravni zvočnih moči v zraku, ki jih povzročajo stroji, z merjenjem vibracij - 2. del: Informativna metoda, ki vključuje določanje ustreznega faktorja sevanja (ISO/TS 7849-2:2009)

Ta del standarda ISO/TS 7849 podaja osnovne zahteve za ponovljivo metodo za določanje ravni zvočne moči hrupa, ki ga oddajajo stroji ali oprema, z merjenjem vibracij na površinah ob poznavanju faktorja zvočnega sevanja v frekvenčnih pasovih, ki je določen za posamezen stroj. 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)[14], 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: Eden od načinov uporabe 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 3744[5], ISO 3745[6], ISO 3746[7] in ISO 9614 (vsi deli)[14] 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.
Priporočila glede izbire frekvenčnih pasov so podana v dodatku C.

General Information

Status
Published
Publication Date
15-Feb-2022
Technical Committee
Drafting Committee
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Start Date
16-Feb-2022
Due Date
13-Apr-2023
Completion Date
16-Feb-2022

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SLOVENSKI STANDARD
SIST-TS CEN ISO/TS 7849-2:2022
01-julij-2022
Akustika - Določanje ravni zvočnih moči v zraku, ki jih povzročajo stroji, z
merjenjem vibracij - 2. del: Informativna metoda, ki vključuje določanje ustreznega
faktorja sevanja (ISO/TS 7849-2:2009)
Acoustics - Determination of airborne sound power levels emitted by machinery using
vibration measurement - Part 2: Engineering method including determination of the
adequate radiation factor (ISO/TS 7849-2:2009)
Akustik - Bestimmung der von Maschinen abgestrahlten Luftschallleistungspegel durch
Schwingungsmessung - Teil 2: Verfahren der Genauigkeitsklasse 2 einschließlich
Bestimmung des geeigneten Strahlungsfaktors (ISO/TS 7849-2:2009)
Acoustique - Détermination des niveaux de puissance acoustique aériens émis par les
machines par mesurage des vibrations - Partie 2: Méthode d'expertise incluant la
détermination d'un facteur de rayonnement approprié (ISO/TS 7849-2:2009)
Ta slovenski standard je istoveten z: CEN ISO/TS 7849-2:2022
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
SIST-TS CEN ISO/TS 7849-2:2022 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST-TS CEN ISO/TS 7849-2:2022

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SIST-TS CEN ISO/TS 7849-2:2022


CEN ISO/TS 7849-2
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
2: Engineering method including determination of the
adequate radiation factor (ISO/TS 7849-2:2009)
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 2: Méthode Schwingungsmessung - Teil 2: Verfahren der
d'expertise incluant la détermination d'un facteur de Genauigkeitsklasse 2 einschließlich Bestimmung des
rayonnement approprié (ISO/TS 7849-2:2009) geeigneten Strahlungsfaktors (ISO/TS 7849-2:2009)
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.





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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 7849-2:2022 E
worldwide for CEN national Members.

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SIST-TS CEN ISO/TS 7849-2:2022
CEN ISO/TS 7849-2:2022 (E)
Contents Page
European foreword . 3

2

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SIST-TS CEN ISO/TS 7849-2:2022
CEN ISO/TS 7849-2:2022 (E)
European foreword
The text of ISO/TS 7849-2:2009 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-
2:2022 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, th
...

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