1、BSI Standards PublicationElectroacoustics Sound level metersPart 2: Pattern evaluation testsBS EN 61672-2:2013Copyright European Committee for Electrotechnical Standardization Provided by IHS under license with CENELECNot for ResaleNo reproduction or networking permitted without license from IHS-,-,
2、-National forewordThis British Standard is the UK implementation of EN 61672-2:2013. It is identical to IEC 61672-2:2013. It supersedes BS EN 61672-2:2003 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee EPL/29, Electroacoustics.A list of organizations r
3、epresented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisions ofa contract. Users are responsible for its correct application. The British Standards Institution 2014.Published by BSI Standards Limited 2014ISBN 978 0
4、580 68848 5ICS 17.140.50Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 January 2014.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STA
5、NDARDBS EN 61672-2:2013Copyright European Committee for Electrotechnical Standardization Provided by IHS under license with CENELECNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-EUROPEAN STANDARD EN 61672-2 NORME EUROPENNE EUROPISCHE NORM December 2013 CENELEC Eur
6、opean Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr 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 wor
7、ldwide for CENELEC members. Ref. No. EN 61672-2:2013 E 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 - Sonomtres - Partie 2: Essais dvaluation dun modle (CEI 61672-2:2013) Elektro
8、akustik - Schallpegelmesser - Teil 2: Baumusterprfungen (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 nati
9、onal 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
10、 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, Bulg
11、aria, 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, Switzer
12、land, Turkey and the United Kingdom. BS EN 61672-2:2013Copyright European Committee for Electrotechnical Standardization Provided by IHS under license with CENELECNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-EN 61672-2:2013 - 2 - Foreword The text of document 29
13、/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
14、which the document has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2014-08-04 latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2016-11-04 This document supersedes EN 61672-2:2003. EN
15、61672-2:2013 includes the following significant technical changes with respect to 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
16、 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 responsi
17、ble 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 indica
18、ted : IEC 61094-8 NOTE Harmonized as EN 61094-8. BS EN 61672-2:2013Copyright European Committee for Electrotechnical Standardization Provided by IHS under license with CENELECNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- 3 - EN 61672-2:2013 Annex ZA (normative)
19、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 ref
20、erences, 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 calibrat
21、ors EN 60942 - IEC 61000-4-2 2008 Electromagnetic compatibility (EMC) Part 4-2: Testing and measurement techniques - Electrostatic discharge immunity test EN 61000-4-2 2009 IEC 61000-4-3 + A1 + A2 2006 2007 2010 Electromagnetic compatibility (EMC) Part 4-3: Testing and measurement techniques - Radia
22、ted, radio-frequency, electromagnetic field immunity test EN 61000-4-3 + A1 + A2 2006 2008 2010 IEC 61000-4-6 2008 Electromagnetic compatibility (EMC) Part 4-6: Testing and measurement techniques - Immunity to conducted disturbances, induced by radio-frequency fields EN 61000-4-6 2009 IEC 61000-6-2
23、2005 Electromagnetic compatibility (EMC) Part 6-2: Generic standards - Immunity for industrial environments EN 61000-6-2 + corr. September 2005 2005 IEC 61094-1 - Measurement microphones Part 1: Specifications for laboratory standard microphones EN 61094-1 - IEC 61094-5 - Measurement microphones Par
24、t 5: Methods for pressure calibration of working standard microphones by comparison EN 61094-5 - IEC 61183 - Electroacoustics - Random-incidence and diffuse-field calibration of sound level meters EN 61183 - IEC 61672-1 - Electroacoustics - Sound level meters Part 1: Specifications EN 61672-1 - IEC
25、62585 - Electroacoustics - Methods to determine corrections to obtain the free-field response of a sound level meter EN 62585 - BS EN 61672-2:2013Copyright European Committee for Electrotechnical Standardization Provided by IHS under license with CENELECNot for ResaleNo reproduction or networking pe
26、rmitted without license from IHS-,-,-EN 61672-2:2013 - 4 - Publication Year Title EN/HD Year CISPR 16-1-1 - Specification for radio disturbance and immunity measuring apparatus and methods Part 1-1: Radio disturbance and immunity measuring apparatus - Measuring apparatus EN 55016-1-1 - CISPR 16-1-2
27、+ corr. January + A1 + A2 2003 2009 2004 2006 Specification for radio disturbance and immunity measuring apparatus and methods Part 1-2: Radio disturbance and immunity measuring apparatus - Ancillary equipment - Conducted disturbances EN 55016-1-2 - + A1 + A2 2004 - 2005 2006 CISPR 16-2-1 + A1 2008
28、2010 Specification for radio disturbance and immunity measuring apparatus and methods Part 2-1: Methods of measurement of disturbances and immunity - Conducted disturbance measurements EN 55016-2-1 + A1 2009 2011 CISPR 16-2-3 - + A1 2010 - 2010 Specification for radio disturbance and immunity measur
29、ing apparatus and methods Part 2-3: Methods of measurement of disturbances and immunity - Radiated disturbance measurements EN 55016-2-3 + AC:2013 + A1 2010 2013 2010 CISPR 22 (mod) 2008 Information technology equipment - Radio disturbance characteristics - Limits and methods of measurement EN 55022
30、 + AC:2011 1) 2010 2011 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 me
31、thods 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 . BS EN 61672-2:2013Copyright European Committee for Electrotechnical Standardization Provided by IHS under license with CENELE
32、CNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- 2 61672-2 IEC:2013 CONTENTS 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 fa
33、cilities 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
34、 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
35、 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 Genera
36、l . 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
37、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 a
38、t 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 temperatur
39、e . 30 9.8.2 Tests at elevated air temperature 31 BS EN 61672-2:2013Copyright European Committee for Electrotechnical Standardization Provided by IHS under license with CENELECNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-61672-2 IEC:2013 3 9.9 Under-range indica
40、tion 31 9.10 Self-generated noise level . 31 9.11 Decay time constants for time weightings F and S . 32 9.12 Toneburst response for sound level meters that measure time-weighted sound level 32 9.13 Toneburst response for sound level meters that measure sound exposure level or time-averaged sound lev
41、el 33 9.14 Response to sequences of repeated tonebursts for sound level meters that measure time-averaged sound level 34 9.15 Overload indication . 34 9.16 C-weighted peak sound level . 35 9.17 Reset 36 9.18 Electrical output 36 9.19 Timing facilities . 36 9.20 Crosstalk in multi-channel sound level
42、 meter systems . 36 9.21 Power supply . 36 10 Pattern evaluation report 37 Bibliography 38 BS EN 61672-2:2013Copyright European Committee for Electrotechnical Standardization Provided by IHS under license with CENELECNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
43、 6 61672-2 IEC:2013 ELECTROACOUSTICS SOUND LEVEL METERS Part 2: Pattern-evaluation tests 1 Scope This part of IEC 61672 provides details of the tests necessary to verify conformance to all mandatory specifications given in IEC 61672-1 for time-weighting sound level meters, integrating-averaging soun
44、d level meters, and integrating sound level meters. Pattern-evaluation tests apply for each channel of a multi-channel sound level meter, as necessary. Tests and test methods are applicable to class 1 and class 2 sound level meters. The aim is to ensure that all laboratories use consistent methods t
45、o perform pattern-evaluation tests. NOTE 1 In this document, references to IEC 61672-1, IEC 61672-2, and IEC 61672-3 refer to the second editions unless stated otherwise. NOTE 2 Procedures for the pattern-evaluation testing of sound level meters designed to conform to the specifications of IEC 61672
46、-1:2002 were given in IEC 61672-2:2003. 2 Normative references 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
47、referenced document (including any amendments) applies. IEC 60942, Electroacoustics Sound calibrators IEC 61000-4-2:2008, Electromagnetic compatibility (EMC) Part 4-2: Testing and measurement techniques Electrostatic discharge immunity test IEC 61000-4-3:2010, Electromagnetic compatibility (EMC) Par
48、t 4-3: Testing and measurement techniques Radiated, radio-frequency, electromagnetic-field immunity test IEC 61000-4-6:2008, Electromagnetic compatibility (EMC) Part 4-6: Testing and measurement techniques Immunity to conducted disturbances, induced by radio-frequency fields IEC 61000-6-2:2005, Electromagnetic compatibility (EMC) Part 6-2: Generic standards Immunity for industrial environments IEC 61094-1, Measurement microphones Part 1: Specifications for laboratory standard microphones IEC 61094-5, Measurement microphones Part 5: Methods for pressure calibration of working standard
