Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Mechanical measurement system
Reexamination Certificate
2005-09-21
2009-02-03
Raymond, Edward (Department: 2857)
Data processing: measuring, calibrating, or testing
Measurement system in a specific environment
Mechanical measurement system
C702S038000, C702S100000, C073S001160, C073S700000, C073S861120
Reexamination Certificate
active
07487052
ABSTRACT:
An exciting unit, applies, to a fluid, a time-changing magnetic field asymmetrical to a plane (PLN). An electrode is placed on the plane in a measuring tube, and detects a resultant electromotive force of an electromotive force based on ∂A/∂t component (A: vector potential, t: time) irrelevant to a flow velocity of the fluid and an electromotive force based on a v×B component originating from the flow velocity of the fluid. A state quantifying unit extracts the ∂A/∂t component and a variation factor dependent on a parameter to be detected, and quantifies the parameter on the basis of the variation factor. The characteristic and state of the fluid and the state in the measuring tube can be detected regardless of the flow rate of the fluid by using the same hardware arrangement as that of an electromagnetic induction type flowmeter.
REFERENCES:
patent: 4408497 (1983-10-01), Suzuki
patent: 4726236 (1988-02-01), Wada
patent: 5625155 (1997-04-01), Yoshida
patent: 7369949 (2008-05-01), Yamamoto
patent: 06-241855 (1994-09-01), None
patent: 2004-108973 (2004-04-01), None
patent: 2004-108975 (2004-04-01), None
patent: WO 03/027614 (2003-04-01), None
JNMIHF edition, “Flow Rate Measurement A to Z for Instrumentation Engineers”, Kogyo Gijutusha, 1995, pp. 147-148.
Blakely , Sokoloff, Taylor & Zafman LLP
Desta Elias
Raymond Edward
Yamatake Corporation
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