Describes a method for measuring sound attenuation of hearing protectors at the threshold of hearing, to yield values close to the maximum attenuation which are not normally attained under field conditions. This has been adopted because the attenuation values can then be consistently reproduced. This method provides data which are collected at low sound pressure levels but which are also representative of attenuation values at higher levels. An exception is amplitude-sensitive hearing protectors for sound pressure levels above the point at which their level-dependent characteristics become effective. At this level the method specified is inapplicable.

INDICE DE CLASSEMENT: S31062-1 Supersedes NFS 31 062 (07/2004)

NFS 31 062:1982

BS EN 24869-1:1993 - Identical

SNV NF EN 24869-1:1993 - Identical

ONORM EN 24869-1:1993 - Identical

BS EN 24869-1 - Identical

NBN EN 24869-1:1995 - Identical

I.S. EN 24869-1:1993 - Identical

UNI EN 24869-1:1993 - Identical

UNE EN 24869-1:1994 - Identical

SS EN 24869-1 Ed. 1 (1993) - Identical