Coriolis mass flow meter having a thin-walled measuring tube
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United States of America Patent
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Oct 19, 2004
Grant Date -
May 15, 2003
app pub date -
Oct 28, 2002
filing date -
Jun 1, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A mass flow meter operating by the Coriolis principle, with a measuring tube through which flows a medium, at least one exciter associated with and exciting the measuring tube, and at least one sensor associated with the measuring tube for capturing the Coriolis forces and/or the Coriolis-force-induced oscillations. The measuring tube is designed as a thin shell. A thin shell is understood to be characterized by a wall thickness h much smaller than its radius R, and a length L of the same order of magnitude of the radius R. The mass flow meter according to the invention uses vibration modes with more than one circumferential wave. Thus, a mass flow meter with high sensitivity and low pressure drop is achieved.
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