| 摘要 |
PROBLEM TO BE SOLVED: To provide a Coriolis mass flowmeter with enhanced stability, accuracy, and vibration resistance. SOLUTION: This Coriolis mass flowmeter is equipped with a branch part where a measured fluid is branched, a joining part where the measured fluid joins, a first vibration tube having a curvilinear shape provided with three inflection points point-symmetrically centering around a first midpoint between a first upstream-side fixed end part to one flow path of the branch part and a first downstream-side fixed end part to the one flow path of the joining part, a second vibration tube, with one end thereof being connected to the other flow path of the branch part, the other end thereof being connected to the other flow path of the joining part, having a curvilinear shape similar to the first vibration tube, being included in the same plane as a plane including the first vibration tube, and being mutually symmetrical to the first vibration tube about a center axis connecting the branch part and the joining part, exciters for exciting the first and second vibration tubes, and vibration detection sensors for detecting vibrations of the first and second vibration tubes. COPYRIGHT: (C)2004,JPO&NCIPI
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