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    • 3. 发明专利
    • MASS FLOWMETER FOR FLOWING MEDIUM
    • JPH08170927A
    • 1996-07-02
    • JP16906895
    • 1995-07-04
    • KRONE AG
    • KURISUCHIAN RAADEMATSUHAA DOUB
    • G01F1/84
    • PROBLEM TO BE SOLVED: To enhance accuracy in the measurement of mass flow rate by setting an optimal value adjustably for the exciting energy generator in a Coriolis tube during operation of a mass flowmeter thereby sustaining the exciting oscillation of the Coriolis tube caused by peripheral factors at an optimal level constantly. SOLUTION: The mass flowmeter comprises an oscillation generator 2 for oscillating a Coriolis tube to introduce a fluid medium, two measurement detectors 3, 4 for detecting Coriolis oscillation caused by Coriolis force, and a control unit 5 for evaluating the measurement signals from the detectors 3, 4. The oscillation generator 2 oscillates the Coriolis tube with exciting energy. The control unit 5 comprises an exciting energy generator 6 for feeding the exciting energy to the oscillation generator 2. Exciting energy of the exciting energy generator 6 can be set and adjusted during operation. In other words, the exciting energy can be elevated to a level for providing a measurement corresponding to a predetermined mass flow during the calibration process of the mass flowmeter.