Meter electronics and methods for rapidly determining a mass...

G - Physics – 01 – F

Patent

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G01F 1/74 (2006.01) G01F 1/84 (2006.01)

Patent

CA 2608838

Meter electronics (20) for determining a mass fraction of flow components in a flow material flowing is provided according to an embodiment of the invention. The meter electronics (20) include an interface (201) for receiving a frequency response of the flow material and a processing system (203). The processing system (203) receives the frequency response from the interface (201) and breaks out the frequency response into at least a gas frequency component and a fluid frequency component. The processing system (203) determines an overall density from the frequency response and determines a gas density from the gas frequency component. The processing system (203) determines the void fraction of gas from the frequency response and one or more of the gas frequency component and the fluid frequency component. The processing system (203) determines the mass fraction from the void fraction of gas multiplied by a ratio of the gas density divided by the overall density.

L'invention porte sur un appareil électronique (20) permettant de déterminer une fraction en masse de composants d'écoulement dans un matériau d'écoulement. Cet appareil de mesure (20) comprend une interface (201) permettant de recevoir une réponse de fréquence du matériau d'écoulement et un système de traitement (203). Le système de traitement (203) reçoit la réponse de fréquence de l'interface (201) et sépare la réponse de fréquence en au moins un composant de fréquence de gaz et un composant de fréquence de fluide. Le système de traitement (203) détermine une densité totale à partir de la réponse de fréquence et détermine une densité de gaz à partir du composant de fréquence de gaz. Ledit système de traitement (203) détermine aussi le taux de vide du gaz à partir de la réponse de fréquence et du composant de fréquence de gaz ou du composant de fréquence de fluide. Ce système de traitement (203) détermine la fraction en masse à partir du taux de vide du gaz multiplié par le rapport de la densité de gaz divisée par la densité totale.

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