Friability testing apparatus

G - Physics – 01 – N

Patent

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73/83

G01N 19/00 (2006.01) G01N 3/56 (2006.01) G01N 33/38 (2006.01)

Patent

CA 2031953

The invention provides a friability testing apparatus which has an electrically excitable vibrator (10, 12) for vibrating a capsule (14) containing material to be tested. The apparatus includes a microprocessor (20) which provides an output waveform with a frequency which is determined by an oscillator (22). The output of the microprocessor drives a power amplifier (18) which controls the vibrator. An accelerometer (16) supplies a feedback signal to the microprocessor, so that theoperation of the vibrator is maintained within predetermined limits.

Appareil d'essai de friabilité muni d'un système vibrant excité par procédé électrique (10,12) pour faire vibrer une capsule (14) contenant le matériau à l'essai. L'appareil inclut un microprocesseur (20) qui fournit une forme d'onde de sortie avec une fréquence qui est déterminée par un oscillateur (22). Le signal de sortie du microprocesseur attaque un amplificateur de puissance (18) qui contrôle le système vibrant. Un accéléromètre (16) fournit un signal de réaction à un microprocesseur, afin que le fonctionnement du système vibrant soit maintenu dans des limites déterminées.

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