Density compensator for coriolis-type mass flowmeters

Details Density compensator for coriolis-type mass flowmeters Density compensator for coriolis-type mass flowmeters

1990-03-05

1991-10-08

Goldstein, Herbert

Measuring and testing

Volume or rate of flow

Mass flow by imparting angular or transverse momentum to the...

G01F 184

Patent

active

050543261

ABSTRACT:
A density insensitive mass flowmeter for measuring mass flow of fluid includes a continuous conduit loop with at least two resonant modes of oscillation of conduit and at least one dummy mass disposed on the conduit at a vibrational node of one of said resonant modes of oscillation. The dummy mass has a mass and position on the conduit such that the ratio of resonant frequencies of the resonant modes remains substantially constant for different densities of fluid flowing through the conduit.

REFERENCES:
patent: 3339400 (1967-09-01), Banks
patent: 4170128 (1979-10-01), Kratky et al.
patent: 4703660 (1987-11-01), Brenneman
patent: 4811606 (1989-03-01), Hasengawa et al.
patent: 4823613 (1989-04-01), Cage et al.
patent: 4823614 (1989-04-01), Dahlin
patent: 4911020 (1990-03-01), Thompson

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