EN 61094-5:2016

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Microphones de mesure - Partie 5: Méthodes pour l'étalonnage en pression par comparaison des microphones étalons de travail (IEC 61094-5:2016)Measurement microphones - Part 5: Methods for pressure calibration of working standard microphones by comparison (IEC 61094-5:2016)33.160.50PriborAccessories17.140.50ElektroakustikaElectroacousticsICS:Ta slovenski standard je istoveten z:EN 61094-5:2016SIST EN 61094-5:2016en01-november-2016SIST EN 61094-5:2016SLOVENSKI
STANDARDSIST EN 61094-5:20071DGRPHãþD

EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 61094-5
September 2016 ICS 17.140.50
Supersedes
EN 61094-5:2001
English Version
Electroacoustics - Measurement microphones - Part 5: Methods for pressure calibration of working standard microphones by comparison (IEC 61094-5:2016)
Électroacoustique - Microphones de mesure - Partie 5: Méthodes pour l'étalonnage en pression par comparaison des microphones étalons de travail (IEC 61094-5:2016)
Messmikrofone - Teil 5: Verfahren zur Druckkammer-Kalibrierung von Gebrauchs-Normalmikrofonen nach der Vergleichsmethode (IEC 61094-5:2016) This European Standard was approved by CENELEC on 2016-07-04. 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. 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 © 2016 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 61094-5:2016 E SIST EN 61094-5:2016

This document supersedes EN 61095-5:2001.
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 61094-5:2016 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 61094-2:2009 NOTE Harmonized as EN 61094-2:2009.
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 1 When an International Publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here: www.cenelec.eu.
Publication Year Title EN/HD Year IEC 61094-1 -
Measurement microphones -- Part 1: Specifications for laboratory standard microphones EN 61094-1 -
IEC 61094-4 -
Measurement microphones -- Part 4: Specifications for working standard microphones EN 61094-4 -
IEC 61094-5 Edition 2.0 2016-05 INTERNATIONAL STANDARD NORME INTERNATIONALE Electroacoustics – Measurement microphones –
Part 5: Methods for pressure calibration of working standard microphones
by comparison
Électroacoustique – Microphones de mesure –
Partie 5: Méthodes pour l'étalonnage en pression par comparaison des microphones étalons de travail
INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE
ICS 17.140.50
ISBN 978-2-8322-3434-1
– 2 – IEC 61094-5:2016 © IEC 2016 CONTENTS FOREWORD . 4 1 Scope . 6 2 Normative references. 6 3 Terms and definitions . 6 4 Reference environmental conditions . 7 5 Principles of pressure calibration by comparison . 7 5.1 Principles . 7 5.1.1 General principle . 7 5.1.2 General principles using simultaneous excitation . 7 5.1.3 General principles using sequential excitation . 8 5.2 Measuring the output voltages of the microphones . 8 6 Factors influencing the pressure sensitivity . 8 6.1 General . 8 6.2 Microphone pressure equalization mechanism . 8 6.3 Polarising voltage . 9 6.4 Reference shield configuration . 9 6.5 Pressure distribution over the diaphragms . 9 6.6 Dependence on environmental conditions . 10 6.7 Validation . 10 7 Calibration uncertainty components . 10 7.1 General . 10 7.2 Sensitivity of the reference microphone . 10 7.3 Measurements of microphone output . 11 7.4 Differences between the sound pressure at the test microphone and that at the reference microphone . 11 7.5 Acoustic impedances of the microphones . 11 7.6 Microphone separation distance . 11 7.7 Microphone capacitance . 11 7.8 Microphone configuration during calibration . 11 7.9 Uncertainty on pressure sensitivity level . 12 Annex A (informative)
Examples of couplers and jigs for simultaneous excitation . 13 A.1 A coupler for use with WS2 microphones at frequencies up to 10 kHz . 13 A.2 A jig for use with WS2 or WS3 microphones at frequencies up to 20 kHz . 14 Annex B (informative)
Examples of couplers for sequential excitation . 16 B.1 A coupler for use with LS1 microphones at frequencies up to 8 kHz . 16 B.2 A coupler for use with WS2 microphones at frequencies up to 16 kHz . 16 Annex C (informative)
Determining the open-circuit sensitivity of a measurement
microphone without using the insert-voltage method . 18 Annex D (informative)
Typical uncertainty analysis . 19 D.1 Introduction . 19 D.2 Analysis . 19 D.3 Combined and expanded uncertainties . 21 Bibliography . 22
Figure A.1 – A coupler for use with WS2 microphones . 13 SIST EN 61094-5:2016

IEC 61094-5:2016 © IEC 2016 – 3 – Figure A.2 – A jig fitted with an LS2 and WS2 microphone . 14 Figure A.3 – Example arrangement of LS2 and WS2 microphones in a jig . 14 Figure A.4 – Example arrangement of LS2 and WS3 microphones in a jig . 14 Figure B.1 – A coupler for use with LS1 microphones . 16 Figure B.2 – A coupler for use with WS2 microphones . 17
Table A.1 – Calculated corrections to be added to the sensitivity level of the WS3 microphone when using the arrangement in Figure A.4 . 15 Table D.1 – Example uncertainty budget . 20
– 4 – IEC 61094-5:2016 © IEC 2016 INTERNATIONAL ELECTROTECHNICAL COMMISSION ____________
ELECTROACOUSTICS – MEASUREMENT MICROPHONES –
Part 5: Methods for pressure calibration of working
standard microphones by comparison
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