Coriolis mass flowmeter

Measuring and testing – Volume or rate of flow – Mass flow by imparting angular or transverse momentum to the...

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G01F 184

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active

057960100

ABSTRACT:
A Coriolis mass flowmeter includes a housing which contains at least one measuring pipe, a supporting mechanism connected to both ends of the measuring pipe, a vibration generator which vibrates the measuring pipe, at least two sensors for detecting the vibration of the measuring pipe, an inlet conduit which introduces a fluid to be measured into the measuring pipe and an outlet conduit which discharges the fluid out of the measuring pipe. A Corioli vibration is applied to the measuring pipe which generates a Coriolis force in the fluid flowing in the measuring pipe. The Coriolis force is utilized for the measurement of the flow rate of the fluid. The Coriolis vibration has a frequency higher than the principal natural frequency of the supporting mechanism, i.e., in an inertial control region. The mass flowmeter is of a simple structure and lightweight, minimizes leakage of the energy of vibration to the outside, and has a high mechanical Q value.

REFERENCES:
patent: 4831885 (1989-05-01), Dahlin
patent: 5287754 (1994-02-01), Kazakis
patent: 5307689 (1994-05-01), Nishiyama et al.
patent: 5323658 (1994-06-01), Yao et al.
patent: 5365794 (1994-11-01), Hussain et al.
patent: 5381697 (1995-01-01), Van Der Pol
patent: 5398554 (1995-03-01), Ogawa et al.
patent: 5531126 (1996-07-01), Drahm

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