Dual loop coriolis effect mass flowmeter

G - Physics – 01 – F

Patent

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G01F 1/84 (2006.01)

Patent

CA 2279642

An apparatus for measuring the flow rate of a fluid flowing through a minimal flow pipeline with a Coriolis effect mass flowmeter. The flowmeter has a single flow tube with two loops. The loops are connected by a cross-over section. A driver oscillates the loops and the phase difference between the ends of the loops is measured. The measured phase difference is then used to find the flow rate of the fluid. The flow tube is fixedly attached to an anchor which is, in turn, attached to a housing. The anchor separate the vibrating, dynamic portion of the flowmeter from the non-vibrating portion of the flowmeter.

Cette invention se rapporte à un appareil conçu pour mesurer le débit d'un fluide s'écoulant dans un pipeline avec un débit minimal, au moyen d'un débitmètre massique à accélération de Coriolis. Le débitmètre possède un unique tube d'écoulement comportant deux boucles reliées par une section de croisement. Un organe d'entraînement fait osciller les boucles et l'on mesure la différence de phase entre les extrémités des boucles. Puis on utilise cette différence de phase mesurée pour déterminer le débit du fluide. Le tube d'écoulement est attaché fixement à un organe d'ancrage qui, à sont tour, est fixé à un châssis. Cet organe d'ancrage sépare la partie dynamique, oscillante, du débitmètre de sa partie non oscillante.

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