NF ISO 13347-1/A1

Industrial fans - Determination of fan sound power levels under standardized laboratory conditions - Part 1 : general overview - Amendment 1

Le présent amendement autorise, pour les ventilateurs centrifuges, le mesurage du bruit dans la bande d'octave 63 Hz à condition que l'environnement d'essai et la précision des instruments soient compatibles avec cette bande d'octave étendue.

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