Electronic hydrometer

Details Electronic hydrometer Electronic hydrometer

1976-11-22

1978-12-12

Tokar, M.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

324 30B, 324 61R, G01N 2742

Patent

active

041298241

ABSTRACT:
An electronic hydrometer for monitoring the specific gravity of a solution containing ions includes a probe having spaced apart electrodes adapted to be inserted into the solution to be monitored and is provided with an A.C. resistance electrically connected in series with an electrode of the probe to form, with the probe, a voltage divider network. Means for applying an A.C. voltage across the network and means for generating a reference voltage are provided. The voltage across one element of the voltage divider network is compared with the reference voltage, the difference in voltages being an indication of solution specific gravity. Suitable means, such as a meter, is provided for comparing the voltages and indicating the voltage difference.

REFERENCES:
patent: 3283240 (1966-11-01), Spady
patent: 3376746 (1968-04-01), Roberts
E. Willihnganz, Battery Impedance, Electrical Engineering, Sep. 1959, vol. 78, No. 9, pp. 922-925.

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