Sonómetros. Integradores - promediadores.
INTEGRATING-AVERAGING SOUND LEVEL METERS.
SONOMÈTRES INTÉGRATEURS-MOYENNEURS.
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17.140.50 / Electroacoustics
CTN 209/SC 29 - Electroacoustics
EN 60804:1994/A2:1994 (Identical)
IEC 804:1985/A2:1993 (Identical)
It is cancelled by: UNE-EN 60804:2002