EN 61672-2-2013 en Electroacoustics - Sound level meters - Part 2 Pattern evaluation tests (Incorporates Amendment A1 2017).pdf

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1、BSI Standards PublicationElectroacoustics Sound level metersPart 2: Pattern evaluation testsBS EN 61672-2:2013National 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 It supersedes BS EN 61672-2:2003 which is withdrawn.The UK participat

2、ion in its preparation was entrusted to TechnicalCommittee EPL/29, Electroacoustics.A list of organizations represented 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 c

3、orrect application. The British Standards Institution 2014.Published by BSI Standards Limited 2014ISBN 978 0 580 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 Stra

4、tegy Committee on 31 January 2014.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 61672-2:2013EUROPEAN STANDARD EN 61672-2 NORME EUROPENNE EUROPISCHE NORM December 2013 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisatio

5、n 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 worldwide for CENELEC members. Ref. No. EN 61672-2:2013 E ICS 17.140.50 Supersedes EN

6、 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) Elektroakustik - Schallpegelmesser - Teil 2: Baumusterprfungen (IEC 61672-2:2013) This Eu

7、ropean 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 referen

8、ces 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 C

9、ENELEC 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 Yugos

10、lav 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. BS EN 61672-2:2013EN 61672-2:2013 - 2 - Forew

11、ord 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

12、 are fixed: latest date by 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 supe

13、rsedes EN 61672-2:2003. EN 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

14、 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

15、 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 ad

16、ded for the standard indicated : IEC 61094-8 NOTE Harmonized as EN 61094-8. BS EN 61672-2:2013- 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 ref

17、erenced 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 modif

18、ications, 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) Part 4-2: Testing and measurement techniques - Electrostatic discharge immunity test EN 61000

19、-4-2 2009 IEC 61000-4-3 + A1 + A2 2006 2007 2010 Electromagnetic compatibility (EMC) Part 4-3: Testing and measurement techniques - Radiated, 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: Te

20、sting and measurement techniques - Immunity to conducted disturbances, induced by radio-frequency fields EN 61000-4-6 2009 IEC 61000-6-2 2005 Electromagnetic compatibility (EMC) Part 6-2: Generic standards - Immunity for industrial environments EN 61000-6-2 + corr. September 2005 2005 IEC 61094-1 -

21、Measurement microphones Part 1: Specifications for laboratory standard microphones EN 61094-1 - IEC 61094-5 - Measurement microphones Part 5: Methods for pressure calibration of working standard microphones by comparison EN 61094-5 - IEC 61183 - Electroacoustics - Random-incidence and diffuse-field

22、calibration of sound level meters EN 61183 - IEC 61672-1 - Electroacoustics - Sound level meters Part 1: Specifications EN 61672-1 - IEC 62585 - Electroacoustics - Methods to determine corrections to obtain the free-field response of a sound level meter EN 62585 - BS EN 61672-2:2013EN 61672-2:2013 -

23、 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 + corr. January + A1 + A2 2003 2009 2004 2006 Specific

24、ation 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 2010 Specification for radio disturbance and immunity

25、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 measuring apparatus and methods Part 2-3: Methods of measure

26、ment 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 + AC:2011 1) 2010 2011 ISO/IEC Guide 98-3 - Uncertain

27、ty 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

28、 - - 1) EN 55022 is superseded by EN 55032:2012, which is based on CISPR 32:2012 + corr. Mars 2012 + corr. August 2012 . BS EN 61672-2:2013 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

29、 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 temp

30、erature, 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 o

31、f 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 1

32、9 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 Compariso

33、n 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

34、.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

35、at an air temperature near the reference air temperature . 30 9.8.2 Tests at elevated air temperature 31 BS EN 61672-2:201361672-2 IEC:2013 3 9.9 Under-range indication 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 soun

36、d 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 level 33 9.14 Response to sequences of repeated tonebursts for sound level meters that measure time-averaged sound level 34 9.15 Overload i

37、ndication . 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 meter systems . 36 9.21 Power supply . 36 10 Pattern evaluation report 37 Bibliography 38 BS EN 61672-2:2013 6 61672-2 IEC:2013 ELECTRO

38、ACOUSTICS 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 sound level meters, and integra

39、ting 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 to perform pattern-evaluatio

40、n 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 61672-1:2002 were given in IEC 6

41、1672-2:2003. 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 referenced document (includ

42、ing 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) Part 4-3: Testing and measurem

43、ent 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 (

44、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 microphones by comparison IEC 61183,

45、 Electroacoustics Random-incidence and diffuse-field calibration of sound level meters IEC 61672-1, Electroacoustics Sound level meters Part 1: Specifications BS EN 61672-2:201361672-2 IEC:2013 7 IEC 62585, Electroacoustics Methods to determine corrections to obtain the free-field response of a soun

46、d level meter 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 1CISPR 16-1-2:2006, Specification for radio disturbance and immunity measuring apparatus and methods Part 1-2:

47、 Radio disturbance and immunity measuring apparatus Ancillary equipment Conducted disturbances CISPR 16-2-1:2010 (Ed. 2.1), Specification for radio disturbance and immunity measuring apparatus and methods Part 2-1: Methods of measurement of disturbances and immunity Conducted disturbance measurement

48、s CISPR 16-2-3:2010 (Ed. 3.1), Specification for radio disturbance and immunity measuring apparatus and methods Part 2-3: Methods of measurement of disturbances and immunity Radiated disturbance measurements CISPR 22:2008, Information technology equipment Radio disturbance characteristics Limits and

49、 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 3 Terms and definitions For the purposes of this document, in addition to the terms and definitions given in IEC 61672-1 and IEC 62585, the