I.S. EN 61094-2:2009

Superseded

View Superseded by

Electroacoustics - Measurement microphones - Part 2: Primary method for pressure calibration of laboratory standard microphones by the reciprocity technique

Superseded date

25-04-2022

Published date

01-01-2009

Publisher

National Standards Authority of Ireland

For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.

Only cited Standards give presumption of conformance to New Approach Directives/Regulations.

FOREWORD
1 Scope
2 Normative references
3 Terms and definitions
4 Reference environmental conditions
5 Principles of pressure calibration by reciprocity
6 Factors influencing the pressure sensitivity of microphones
7 Calibration uncertainty components
Annex A (normative) Heat conduction and viscous losses in a closed cavity
Annex B (normative) Acoustic impedance of a capillary tube
Annex C (informative) Examples of cylindrical couplers for calibration of microphones
Annex D (informative) Environmental influence on the sensitivity of microphones
Annex E (informative) Methods for determining microphone parameters
Annex F (informative) Physical properties of humid air

This part of International Standard IEC 61094 – is applicable to laboratory standard microphones meeting the requirements of IEC 61094-1 and other types of condenser microphone having the same mechanical dimensions; – 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.

Committee	IEC/TC 29
DocumentType	Standard
ProductNote	The date of any NSAI previous adoption may not match the date of its original CEN/CENELEC document.
PublisherName	National Standards Authority of Ireland
Status	Superseded
SupersededBy	I.S. EN 61094-2:2009&A1:2022
Supersedes	I.S. EN 61094-2:1994