Water-soluble oil property detection device

Details Water-soluble oil property detection device Water-soluble oil property detection device

1988-04-04

1989-08-15

Eisenzopf, Reinhard J.

Electricity: measuring and testing

Conductor identification or location

Inaccessible

324 65R, 73 64, G01R 2726, G01N 3328

Patent

active

048578290

ABSTRACT:
A device for detecting properties of electrically conductive water-soluble oil used in hydraulic pressure-operated devices. The water-soluble oil property detection device is characterized in that it comprises a pair of electrodes placed in a water-soluble oil, a capacitor which is connected in series with the electrodes and which forms a filter circuit with the resistance of the water-soluble oil between the electrodes, a high-frequency power source which has a high-frequency oscillator circuit and a power amplifier and which is connected to both ends of the capacitor and electrodes, and AC-DC converter circuit which detects a high-frequency voltage value occurring at both ends of said capacitor or the resistance between the electrodes and converts the value to a direct current voltage signal, and an indicator part which indicates the output of the converter circuit in correspondence to water-soluble oil property changes.

REFERENCES:
patent: 3768006 (1973-10-01), Mueller
patent: 3816811 (1974-06-01), Cmelik
patent: 4112744 (1978-09-01), Tassano
patent: 4240286 (1980-12-01), Bentz
patent: 4638305 (1987-01-01), Sutton

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