Coriolis mass flow meter

Details Coriolis mass flow meter Coriolis mass flow meter

1990-07-31

1991-08-13

Goldstein, Herbert

Measuring and testing

Volume or rate of flow

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

25022716, 73657, G01F 184

Patent

active

050386204

ABSTRACT:
A Coriolis mass flow meter for measuring the volume of mass flowing through a conduit. The flow meter includes at least one flow tube through which the mass to be measured passes. The flow tube is vibrated at a selected frequency that produces a resultant oscillation which is dependent upon Coriolis forces generated by the flowing mass. The oscillations of the flow tube are measured optically utilizing an optical fiber measurement system comprising a loop of optical fiber capable of producing microbend-induced optical attenuation, which is coupled to the flow tube, an optical signal source, an optical detector means, and means for determining the modulation of the optical signal between the input end and the output end of the optical fiber. Preferably, the optical fiber is metal-coated.

REFERENCES:
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patent: 4358678 (1982-11-01), Lawrence
patent: 4407561 (1983-10-01), Wysocki
patent: 4418984 (1983-12-01), Wysocki et al.
patent: 4711132 (1987-12-01), Dahlin
patent: 4724316 (1988-02-01), Morton
patent: 4843890 (1989-07-01), Samson et al.

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