EN 61672-2:2013

SLOVENSKI STANDARD
01-marec-2014
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SIST EN 61672-2:2004
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Electroacoustics - Sound level meters - Part 2: Pattern evaluation tests
Elektroakustik - Schallpegelmesser - Teil 2: Baumusterprüfungen
Electroacoustique - Sonomètres - Partie 2: Essais d'évaluation d'un modèle
Ta slovenski standard je istoveten z: EN 61672-2:2013
ICS:
17.140.50 Elektroakustika Electroacoustics
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 61672-2
NORME EUROPÉENNE
December 2013
EUROPÄISCHE NORM
ICS 17.140.50 Supersedes EN 61672-2:2003

English version
Electroacoustics -
Sound level meters -
Part 2: Pattern evaluation tests
(IEC 61672-2:2013)
Electroacoustique -  Elektroakustik -
Sonomètres - Schallpegelmesser -
Partie 2: Essais d'évaluation d'un modèle Teil 2: Baumusterprüfungen
(CEI 61672-2:2013) (IEC 61672-2:2013)

This European Standard was approved by CENELEC on 2013-11-04. CENELEC 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-CENELEC Management Centre or to any CENELEC 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 CENELEC member into its own language and notified
to the CEN-CENELEC Management Centre has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus,
the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany,
Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

CEN-CENELEC Management Centre: Avenue Marnix 17, B - 1000 Brussels

© 2013 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61672-2:2013 E
Foreword
The text of document 29/813/FDIS, future edition 2 of IEC 61672-2, prepared by IEC/TC 29
"Electroacoustics" in cooperation with the International Organization of Legal Metrology (OIML), was
submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 61672-2:2013.
The following dates are fixed:
– latest date by which the document has to be implemented at (dop) 2014-08-04
national level by publication of an identical national
standard or by endorsement
– latest date by which the national standards conflicting with (dow) 2016-11-04
the document have to be withdrawn

This document supersedes EN 61672-2:2003.
EN 61672-2:2003.
In this second edition, conformance to specifications is demonstrated when
a) measured deviations from design goals do not exceed the applicable acceptance limits, and
b) the uncertainty of measurement does not exceed the corresponding maximum permitted
uncertainty, with both uncertainties determined for a coverage probability of 95 %.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such
patent rights.
Endorsement notice
The text of the International Standard IEC 61672-2:2013 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following note has to be added for the standard indicated :
IEC 61094-8 NOTE Harmonized as EN 61094-8.

- 3 - EN 61672-2:2013
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
NOTE  When an international publication has been modified by common modifications, indicated by (mod), the
relevant EN/HD applies.
Publication Year Title EN/HD Year
IEC 60942 - Electroacoustics - Sound calibrators EN 60942 -
IEC 61000-4-2 2008 Electromagnetic compatibility (EMC) EN 61000-4-2 2009
Part 4-2: Testing and measurement
techniques - Electrostatic discharge
immunity test
IEC 61000-4-3 2006 Electromagnetic compatibility (EMC) EN 61000-4-3 2006
+ A1 2007 Part 4-3: Testing and measurement + A1 2008
+ A2 2010 techniques - Radiated, radio-frequency, + A2 2010
electromagnetic field immunity test
IEC 61000-4-6 2008 Electromagnetic compatibility (EMC) EN 61000-4-6 2009
Part 4-6: Testing and measurement
techniques - Immunity to conducted
disturbances, induced by radio-frequency
fields
IEC 61000-6-2 2005 Electromagnetic compatibility (EMC) EN 61000-6-2 2005
Part 6-2: Generic standards - Immunity for + corr. September 2005
industrial environments
IEC 61094-1 - Measurement microphones EN 61094-1 -
Part 1: Specifications for laboratory
standard microphones
IEC 61094-5 - Measurement microphones EN 61094-5 -
Part 5: Methods for pressure calibration of
working standard microphones by
comparison
IEC 61183 - Electroacoustics - Random-incidence and EN 61183 -
diffuse-field calibration of sound level
meters
IEC 61672-1 - Electroacoustics - Sound level meters EN 61672-1 -
Part 1: Specifications
IEC 62585 - Electroacoustics - Methods to determine EN 62585 -
corrections to obtain the free-field
response of a sound level meter

Publication Year Title EN/HD Year
CISPR 16-1-1 - Specification for radio disturbance and EN 55016-1-1 -
immunity measuring apparatus and
methods
Part 1-1: Radio disturbance and immunity
measuring apparatus - Measuring
apparatus
CISPR 16-1-2 2003 Specification for radio disturbance and EN 55016-1-2 2004
+ corr. January 2009 immunity measuring apparatus and - -
+ A1 2004 methods + A1 2005
+ A2 2006 Part 1-2: Radio disturbance and immunity + A2 2006
measuring apparatus - Ancillary
equipment - Conducted disturbances
CISPR 16-2-1 2008 Specification for radio disturbance and EN 55016-2-1 2009
+ A1 2010 immunity measuring apparatus and + A1 2011
methods
Part 2-1: Methods of measurement of
disturbances and immunity - Conducted
disturbance measurements
CISPR 16-2-3 2010 Specification for radio disturbance and EN 55016-2-3 2010
- - immunity measuring apparatus and + AC:2013 2013
+ A1 2010 methods + A1 2010
Part 2-3: Methods of measurement of
disturbances and immunity - Radiated
disturbance measurements
CISPR 22 (mod) 2008 Information technology equipment - Radio EN 55022 2010
1)
disturbance characteristics - Limits and + AC:2011 2011
methods of measurement
ISO/IEC Guide 98-3 - Uncertainty of measurement - -
Part 3: Guide to the expression of
uncertainty in measurement (GUM:1995)
ISO/IEC Guide 99 - International vocabulary of metrology - - -
Basic and general concepts and
associated terms (VIM)
ISO 26101 2012 Acoustics - Test methods for the - -
qualification of free-field environments

1) EN 55022 is superseded by EN 55032:2012, which is based on CISPR 32:2012 + corr. Mars 2012 +
corr. August 2012 .
IEC 61672-2 ®
Edition 2.0 2013-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electroacoustics – Sound level meters –

Part 2: Pattern evaluation tests

Electroacoustique – Sonomètres –

Partie 2: Essais d'évaluation d'un modèle

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX W
ICS 17.140.50 ISBN 978-2-8322-1080-2

– 2 – 61672-2 © IEC:2013
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Submission for testing . 7
5 Marking of the sound level meter and information in the Instruction Manual . 8
6 Mandatory facilities and general requirements . 8
7 Environmental, electrostatic, and radio-frequency tests . 10
7.1 General . 10
7.2 Uncertainties for measurements of environmental test conditions . 11
7.3 Influence of static pressure . 11
7.4 Limits on air temperature, relative humidity and static pressure . 12
7.5 Acclimatization requirements for tests of the influence of air temperature and
relative humidity . 12
7.6 Abbreviated test of the combined influence of air temperature and relative
humidity . 12
7.7 Influence of air temperature . 14
7.8 Influence of relative humidity . 15
7.9 Influence of electrostatic discharges . 16
7.10 Influence of a.c. power-frequency and radio-frequency fields. 17
7.10.1 Sound signal . 17
7.10.2 AC power-frequency tests . 17
7.10.3 Radio-frequency tests . 17
8 Radio-frequency emissions and public power supply disturbances. 19
9 Electroacoustical performance tests . 20
9.1 General . 20
9.2 Indication at the calibration check frequency . 21
9.3 Directional response . 21
9.4 Tests of frequency weightings with acoustical signals . 23
9.4.1 General . 23
9.4.2 Windscreen corrections . 24
9.4.3 Free-field tests . 24
9.4.4 Comparison coupler tests . 25
9.4.5 Conformance . 26
9.4.6 Random incidence . 26
9.5 Tests of frequency weightings with electrical signals . 27
9.5.1 General . 27
9.5.2 First alternative test procedure (variable input signal level). 27
9.5.3 Second alternative test procedure (constant input signal level) . 27
9.5.4 Conformance . 28
9.5.5 Frequency weightings C or Z at 1 kHz . 28
9.6 Corrections for the effect of reflections from the case of a sound level meter
and diffraction around a microphone . 28
9.7 Corrections to obtain free-field or random-incidence sound levels . 29
9.8 Level linearity . 30
9.8.1 Tests at an air temperature near the reference air temperature . 30
9.8.2 Tests at elevated air temperature . 31

61672-2 © IEC:2013 – 3 –
9.9 Under-range indication .
...