Sensing device to sense contaminants in water

Details Sensing device to sense contaminants in water Sensing device to sense contaminants in water

1996-05-29

1998-07-07

Oda, Christine K.

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Lumped type parameters

73 6144, G01R 2726

Patent

active

057774838

ABSTRACT:
A sensing device to detect contaminants of known dielectric value such as hydrocarbons when present in a medium with a different dielectric value such as water comprising a plurality of capacitive members electrically connected to a sensor signal generator including a plurality of sensor channels corresponding to the plurality of capacitive members to generate a sensor signal corresponding to the dielectric value of the medium surrounding each of the plurality of capacitive members and a detect signal generator including a plurality of detect channels corresponding to the plurality of sensor channels to receive the sensor signal of the corresponding sensor channel and to generate a contaminant detection signal when each sensor signal from each sensor channel is within a predetermined range of the dielectric value of the contaminant to be monitored.

REFERENCES:
patent: 3746974 (1973-07-01), Stoakes
patent: 3753092 (1973-08-01), Ludlow
patent: 4058802 (1977-11-01), Meyers
patent: 5125265 (1992-06-01), O'Connell

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