Instrument for on-line measurement of the absolute electrical co

Details Instrument for on-line measurement of the absolute electrical co Instrument for on-line measurement of the absolute electrical co

1987-01-20

1988-06-14

Eisenzopf, Reinhard J.

Electricity: measuring and testing

Electrolyte properties

Using a conductivity determining device

324444, G01N 2708

Patent

active

047514663

ABSTRACT:
The invention is directed to an instrument for measuring the absolute electrical conductivity of liquids, which instrument may be employed on-line in a recirculating paint bath to measure the conductivity of the paint. The instrument comprises a four electrode probe and a meter which comprises a device for generating and controlling an AC current connected to the first electrode such that a constant AC voltage is maintained across the second and fourth electrodes and a device for measuring and detecting an AC current connected to the third electrode, wherein the fourth electrode is maintained at the same potential as a nearby ground.

REFERENCES:
patent: 2599413 (1952-06-01), Reichertz
patent: 2871445 (1959-01-01), Carter et al.
patent: 3376501 (1968-04-01), Peranis
patent: 3582767 (1971-06-01), Brum et al.
patent: 3924175 (1975-12-01), Wilson
patent: 3993945 (1976-11-01), Warmoth et al.
patent: 4118663 (1978-10-01), Barben, II

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