Defines procedures for periodic testing of time-weighting, integrating-averaging, and integrating sound level meters that were designed to conform to the class 1 or class 2 specifications of the second edition of IEC 61672-1.

I.S. EN 61672-3:2013 - Identical

DS EN 61672-3 : 2014 - Identical

CEI EN 61672-3 : 2014 - Identical

SANS 61672-3 : 1ED 2007 - Identical

BS EN 61672-3 : 2013 - Identical

NEN EN IEC 61672-3 : 2014 - Identical

PN EN 61672-3 : 2014 - Identical

UNE EN 61672-3 : 2009 - Identical

DIN EN 61672-3 : 2017 - Identical

AS/NZS IEC 61672.3:2019 - Identical