Patent ID: 6516674
Filing Date: 2003-02-11
Classification: G01F

Abstract:
A mass flowmeter operating by the Coriolis principle, with one essentially straight, moving-fluid-conducting Coriolis measuring tube (1), at least one oscillator (2, 3) associated with and exciting the said Coriolis measuring tube (1), at least one detector (4, 5) associated with the Coriolis measuring tube (1) and serving to measure at least one of Coriolis forces and Coriolis oscillations derived from Coriolis forces, and a compensating cylinder (6), the said Coriolis measuring tube (1) being positioned within and mechanically connected to the compensating cylinder (6), wherein in a symmetrical arrangement relative to the center transverse axis (M) of the Coriolis measuring tube (1), the Coriolis measuring tube (1) is provided with balancing elements (10) and retaining devices (11, 12), the balancing elements (10) are respectively attached to said retaining devices (11, 12) and the resonant frequency of the oscillatory system derived from the balancing elements (10) and the retaining devices (11, 12) is specifically selected to differ from the frequency of the excitation oscillation.