Describes instruments for the measurement of frequency weighted and time averaged sound pressure levels. Includes object and general requirements, definitions, general characteristics, frequency weighting and amplifier characteristics, averaging and indicator characteristics, overload indication, sensitivity to various environments, calibration and verification of the basic characteristics, provision for use with auxiliary equipment and rating information and instruction manual.

SS IEC 804:1991

SS EN 61672-1 Ed. 1 (2003)

UNE EN 60804:2002 - Identical

I.S. EN 60804:2000 - Identical

DIN EN 60804 (2002-01) - Identical

SN EN 60804:2000 - Identical

NF EN 60804:2001 - Identical

BS EN 60804:2001 - Identical

NBN EN 60804:2001 - Identical

IEC 60804 Ed. 2.0 - Identical