Measuring and testing – Volume or rate of flow – Mass flow by imparting angular or transverse momentum to the...
Patent
1991-01-22
1994-03-22
Goldstein, Herbert
Measuring and testing
Volume or rate of flow
Mass flow by imparting angular or transverse momentum to the...
G01F 184
Patent
active
052953980
ABSTRACT:
The convective inertia force of media moving through a laterally vibrating conduit with two extremities restrained from lateral displacement is measured as a measure of the mass flow rate of media moving through the conduit by a method; wherein the flexural vibration of the conduit is measured at the midsection and another section intermediate the midsection and one of the two extremities of the conduit, and the convective inertia force is determined as a function of ratio between two values of the flexural vibration of the conduit at said another section of the conduit respectively measured at two instants when absolute value of the flexural vibration at the midsection of the conduit reaches respectively the maximum and minimum values during at least one cycle of the flexural vibration of the conduit, or as a function of phase angle difference in the flexural vibration of the conduit between the midsection and said another section of the conduit.
REFERENCES:
patent: 4622858 (1986-11-01), Mizerak
patent: 4703660 (1987-11-01), Brenneman
patent: 4711132 (1987-12-01), Dahlin
patent: 4759223 (1988-07-01), Frost
patent: 4831885 (1989-05-01), Dahlin
patent: 5050439 (1991-09-01), Thompson
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