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IEC 61672-1:2002

IEC 61672-1:2002

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Electroacoustics – Sound level meters – Part 1: Specifications

Published By Publication Date Number of Pages
IEC 2002-05-29 94
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Gives electroacoustical performance specifications for three kinds of sound measuring instruments:

– a conventional sound level meter that measures exponential time-weighted sound level;

– an integrating-averaging sound level meter that measures time-average sound level; and

– an integrating sound level meter that measures sound exposure level.

A single instrument may make any, or all, of the three kinds of measurements.

Two performance categories, class 1 and class 2, are specified in this standard. In general, specifications for class 1 and class 2 sound level meters have the same design goals and differ mainly in the tolerance limits and the range of operational temperatures. Tolerance limits for class 2 specifications are greater than, or equal to, those for class 1 specifications.

Sound level meters conforming to the requirements of this standard have a specified frequency response for sound incident on the microphone from one principal direction in an acoustic free field or from random directions.

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IEC 61672-1:2002
$68.90