SN EN 60651:1994现行

Describes instruments (sound level meters) for the measurement of certain frequency and time weighted sound pressure levels. Gives the following characteristics of sound level meters: - directional characteristics; - frequency weighting characteristics; - time weighting, detector and indicator characteristics; - sensitivity to various environments.

SS EN 60651:1996 - Identical

UNE EN 60651:1996 - Identical

I.S. EN 60651:1994 - Identical

IEC 60651 Ed. 1.2 - Identical

NBN EN 60651:1996 - Identical

BS EN 60651:1994 - Identical

NF EN 60651:1994 - Identical

DIN EN 60651 (1994-05) - Identical