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Reference EN 61094-2:2009
Title Electroacoustics - Measurement microphones - Part 2: Primary method for pressure calibration of laboratory standard microphones by the reciprocity technique
Project Number 21495
Abstract/Scope IEC 61094-2:2009 is applicable to laboratory standard microphones meeting the requirements of IEC 61094-1 and other types of condenser microphone having the same mechanical dimensions and specifies a primary method of determining the complex pressure sensitivity so as to establish a reproducible and accurate basis for the measurement of sound pressure. This second edition cancels and replaces the first edition published in 1992. This second edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- an update of Clause 6 to fulfil the requirements of ISO/IEC Guide 98-3;
- an improvement of the heat conduction theory in Annex A;
- a revision of Annex F: Physical properties of humid air.


Current Stage code 6060
Current Stage code date 2009-04-16
Current Stage code deadline 2009-12-01
Deadline date for vote  


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IEC Technical Body IEC/TC 29
Reference Document IEC 61094-2:2009 (EQV)
ICS 17.140.50 - Electroacoustics
Keywords Electroacoutstics;Microphone;Pressure;Calibration;Reciprocity technique
Special National Condition(s)  


Categories - Aspects
Product Life Cycle


Deadline Date
6060 2009-04-16 2009-12-01 export to doc file  EN  FR  DE
5099 2009-03-01 2009-05-01  
5060 2009-02-02 2009-02-16 export to doc file  EN
5020 2008-11-28 2009-01-30  
3090 2008-06-13 2008-10-01  
5091 2008-02-29 2008-05-20  
5060 2008-02-25 2008-03-10 export to doc file  EN
5020 2007-09-21 2008-02-22  
1090 2007-09-18 2007-09-21  

Implementation Dates

date of Ratification (DOR) (1) 2009-03-01
date of Availability (DAV) (2) 2009-04-16
date of Announcement (DOA) (3) 2009-06-01
date of Publication (DOP) (4) 2009-12-01
date of Withdrawal (DOW) (5) 2012-03-01


Supersedes EN 61094-2:1993
Superseded by  
Normative reference (6) ISO/IEC Guide 98-3:2008
EN 61094-1:2000

(1) Date of ratification (dor) date when the Technical Board notes the approval of an EN (and HD for CENELEC), from which time the standard may be said to be approved

(2) Date of availability (dav) date when the definitive text in the official language versions of an approved CEN/CENELEC publication is distributed by the Central Secretariat

(3) Date of announcement (doa) latest date by which the existence of an EN (and HD for CENELEC), a TS or a CWA has to be announced at national level

(4) Date of publication (dop) latest date by which an EN has to be implemented at national level by publication of an identical national standard or by endorsement

(5) Date of withdrawal (dow) latest date by which national standards conflicting with an EN (and HD for CENELEC) have to be withdrawn

(6) This list of normative references is purely indicative. The only official list of normative reference is the list of the published standard.