State detection device

Details State detection device State detection device

2010-09-02

2011-10-18

Thompson, Jewel V (Department: 2855)

Measuring and testing

Volume or rate of flow

By measuring electrical or magnetic properties

Reexamination Certificate

active

08037774

ABSTRACT:
A state detection device which detects parameters includes a measuring pipe, electrodes, an exciting coil that applies a magnetic field to the fluid, signal lines arranged at angle to the magnetic field such that an electromotive force is generated due to a change with passage of time in the magnetic field, and a state quantifying unit for extracting a ∂A/∂t component from resultant electromotive forces that are detected at the electrodes and the signal lines and are composed of an electromotive force of the ∂A/∂t component irrelevant to a flow velocity of the fluid and resulting from a change with passage of time in the magnetic field and an electromotive force of a v×B component relevant to the flow velocity of the fluid, and extracts a variation factor relevant to the parameter from the ∂A/∂t component to quantify the parameter based on the variation factor.

REFERENCES:
patent: 7434478 (2008-10-01), Yamamoto
patent: 3164684 (2001-05-01), None
patent: 2006-90794 (2006-04-01), None

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