BS EN 24869-1现行

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.

© British Standards Institution 2013

Supersedes and renumbers BS 5108-1(1991).
(07/2004)

BS 5108-1:1991

UNE EN 24869-1:1994 - Identical

ISO 4869-1:1990 - Identical

UNI EN 24869-1:1993 - Identical

NF EN 24869-1:1993 - Identical

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

NBN EN 24869-1:1995 - Identical

ONORM EN 24869-1:1993 - Identical

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