Resonant network fluid level sensor assembly

Details Resonant network fluid level sensor assembly Resonant network fluid level sensor assembly

2006-05-02

2006-05-02

Nguyen, Vincent Q. (Department: 2858)

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Distributive type parameters

C073S30400R

Reexamination Certificate

active

07038467

ABSTRACT:
A sensing assembly senses liquid levels in a reservoir and creates a sensing signal. The sensing assembly includes a first electrical conductor and a second electrical conductor extending into the reservoir. A first electrode is electrically connected to the first electrical conductor. A second electrode is electrically connected to the second electrode conductor. The sensing assembly also includes a plurality of equidistantly spaced plates that are operatively connected to the second electrode. Each of the plurality of plates combines with the first electrode to create a capacitance such that the sensing signal generating by the sensing assembly determines the level of the liquid in the reservoir. The plates, an inductor and resistors are connected together in series with each of the groupings being connected in parallel to each other along the second electrode length. The sensing signal will generate spikes that, based on amplitude, will identify the amount of a liquid in the reservoir.

REFERENCES:
patent: 3343415 (1967-09-01), Johnston
patent: 2005/0076711 (2005-04-01), Urquidi

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