Coriolis flow meter and method for flow measurement

Details Coriolis flow meter and method for flow measurement Coriolis flow meter and method for flow measurement

2007-10-30

2007-10-30

Bui, Bryan (Department: 2863)

Data processing: measuring, calibrating, or testing

Measurement system in a specific environment

Mechanical measurement system

C073S861356, C073S861357, C073S03200R

Reexamination Certificate

active

11443069

ABSTRACT:
A Coriolis flow meter, which includes: at least one measuring tube, which is excited to oscillate during measurement operation, and through which a medium flows, first and second sensors for registering a flow-dependent oscillation of the measuring tube and for producing first and second sensor signals; and two separated, signal-processing branches. According to a method of flow measurement a reference signal is superimposed on the first or second of the sensor signals, by the passing through both signal processing branches of an auxiliary signal formed by the superimposing, and by the filtering of a first, conditioned, reference signal from a first signal occurring on the output of the first signal processing branch and the filtering of a second, conditioned, reference signal from a second signal occurring on the output of the second signal processing branch, and by determining a ratio of the amplification gains of the signal processing branches on the basis of the conditioned, reference signals.

REFERENCES:
patent: 6073495 (2000-06-01), Stadler
patent: 2001/0045134 (2001-11-01), Henry
patent: 2004/0025599 (2004-02-01), Matt
patent: 01 918 944 (2004-10-01), None
patent: 0 698 783 (1996-02-01), None
patent: 1 489 390 (2004-12-01), None
patent: WO 03/029760 (2003-04-01), None

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