| 摘要 |
PROBLEM TO BE SOLVED: To provide a Coriolis mass flowmeter capable of securing stable vibration even if a plurality of sensors with different apertures are driven by an excitation circuit having a specific design constant. SOLUTION: In this Coriolis mass flowmeter, measured fluid is allowed to flow in a measurement tube fixed at both ends, and the measurement tube is resonated in a specified mode by an excitation means. A pair of Coriolis signals provided by an upstream side sensor and a downstream side sensor installed on the upstream and downstream sides of the center of the measurement tube are led to a signal calculating and processing part, and a mass flow is calculated. The amplitude of the resonance can be changed. COPYRIGHT: (C)2004,JPO
|
