Coriolis mass flow meter adapted for low flow rates

Details Coriolis mass flow meter adapted for low flow rates Coriolis mass flow meter adapted for low flow rates

G - Physics

01

F

73/132

G01F 1/84 (2006.01)

Patent

CA 1336547

The invention relates to a Coriolis mass flow meter of the type including a continuous flexible flow tube fixedly mounted at its ends and adapted for receiving fluid flow. A driver oscillates the flow tube at a fixed frequency. A drive brace is attached at one end to the flow tube mount and at the opposite end to the flow tube substantially at the position of the applied oscillation of the driver. The brace limits the displacement of the flow tube transverse to the direction of the applied oscillation without substantially restricting the motion of the flow tube due to the Coriolis reaction of the fluid to the driver oscillation. The mounting of the flow tube being made by the engagement of gripping portions having bushings therein. The mount limiting transfer of forces acting on the inlet and outlet ends of the flow tube. Resonant pins are provided at each end of the flow tube adjacent the fixed mounting to resiliently clamp the flow tube and fix the resonant frequency thereof throughout its useful life. The Coriolis reaction of the fluid being measured by sensors so as to determine the mass flow rate of the fluid.

613361

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