Method and structure for flow measurement

Details Method and structure for flow measurement Method and structure for flow measurement

G - Physics

01

F

73/132

G01F 1/20 (2006.01) G01F 1/84 (2006.01)

Patent

CA 1210611

ABSTRACT Apparatus and method for mass flow measurement utilizing a substantially "U" shaped conduit mounted in a cantilevered manner at the legs thereof, so that when the conduit is oscillated, sensors mounted on the conduit can measure the Coriolis force by measurement of the force moment or the angular motion of the conduit around an axis substantially symmetrical to the legs of the conduit. The force moment is measured by sensing incipient movement around the axis, and generating and measuring a nulling force. In preferred embodiments, the oscillating means are mounted on a spring arm having a natural frequency substantially equal to that of the "U" shaped conduit, and in a particularly preferred embodiment the measuring sensors are mounted on the "U" shaped conduit and adapted to measure, with proper direction sense, the time differential between the leading and trailing portions of the "U" shaped conduit passing through the plane of the "U" shaped conduit at substantially the midpoint of the oscillation thereof.

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