Device for measuring the volume of flowing substance and...

G - Physics – 01 – F

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G01F 3/10 (2006.01) B67D 7/20 (2010.01) G01F 25/00 (2006.01) G01P 3/487 (2006.01)

Patent

CA 2279342

The invention relates to a method for measuring the volume of flowing substances, in particular fuel, by means of a screw spindle volumeter, comprising the following steps: detection of the rotatin of a screw spindle by means of a sensor and production of impulses, the temporal sequence of which is representative of the angular speed of the screw spindle; repeated measuring of the time interval between succcessive impulses; depending on the measured time interval, selection of a volume value that is predetermined for the corresponding time interval, whereby the volume value is representative of the volume flowing through the volumeter, at the corresponding angular speed of the spindle, per determined angle of rotation of the spindle, addition of the volume values selected successively for different time interval measurements, and establishing and, preferably, display of a total volume value, based on the sum obtained by continuous addition of the volume values during the entire measuring of volume.

L'invention concerne un procédé permettant de mesurer le volume de substances en écoulement, notamment de carburant, à l'aide d'un système volumétrique à tige filetée, qui comprend les étapes suivantes: détection des rotations d'une tige filetée à l'aide d'un détecteur et production d'impulsions dont la suite temporelle est représentative de la vitesse angulaire de la tige filetée; mesure renouvelée de la durée entre les impulsions successives; en fonction de la durée mesurée, sélection d'une valeur de volume prédéterminée pour la durée correspondante, la valeur de volume étant représentative du volume s'écoulant à travers le système volumétrique, à la vitesse angulaire correspondante de la tige par angle de rotation déterminé de ladite tige; addition des valeurs de volume sélectionnées successivement pour différentes mesures de durée et établissement, et de préférence, affichage d'une valeur de volume global, sur la base de la somme obtenue par addition en continu des valeurs de volume, pendant l'ensemble de la mesure de volume.

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