In-line measuring device

Details In-line measuring device In-line measuring device

2011-06-28

2011-06-28

Thompson, Jewel (Department: 2855)

Measuring and testing

Volume or rate of flow

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

Reexamination Certificate

active

07966895

ABSTRACT:
An in line measuring device, includes a measuring transducer of the vibration-type having: at least one measuring tube vibrating, at least at times, during operation, and serving for conveying, at least at times, a two- or multiphase, flowable medium; an exciter mechanism acting on the measuring tube for producing vibrations of the at least one measuring tube; and a sensor arrangement for registering vibrations of the at least one measuring tube and for delivering at least one oscillation measurement signal representing oscillations of the measuring tube. The in line measuring device further includes measuring device electronics electrically coupled with the measuring transducer. The measuring device electronics delivers, at least at times, at least one exciter signal driving the exciter mechanism, and, at least at times, ascertains a damping value of first type, which represents a change of damping opposing the vibrations of the measuring tube within a predeterminable time interval.

REFERENCES:
patent: 5027662 (1991-07-01), Titlow
patent: 5907104 (1999-05-01), Cage
patent: 5926096 (1999-07-01), Mattar
patent: 6327914 (2001-12-01), Dutton
patent: 2008/0066521 (2008-03-01), Logue
patent: 10 2004 021 690 (2005-11-01), None
patent: WO 2007/040468 (2007-04-01), None
U.S. Appl. No. 12/588,179 Daniel Kuttler Oct. 6, 2009.

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