Electricity: measuring and testing – Electrolyte properties – Using a conductivity determining device
Patent
1981-06-29
1984-01-17
Tokar, Michael J.
Electricity: measuring and testing
Electrolyte properties
Using a conductivity determining device
324446, 204406, 204412, G01N 2702
Patent
active
044266219
ABSTRACT:
Analytical apparatus is arranged for increased sensitivity in determining a desired characteristic by decreasing the sensitivity to extraneous noise, essentially as common mode signal, while treating the desired signal differentially. Test signal is applied to apparatus comprising an electrochemical cell containing electrolyte in which a pair of matched working electrodes are equispaced from a counter electrode and from a reference electrode. The working electrodes conduct different values of current, the difference being a measure of characteristic of material making up the electrolyte. The signal applied between the counter and the working electrodes is varied over a predetermined range. The potential between the working electrodes is established at zero for basic operation, but a fixed biasing potential is established between the two working electrodes for a given experiment in which the test signal is varied. The biasing potential is usually relatively small and the current flow difference under study is likewise very small. The data output signal which is proportional to the small difference in the currents, is amplified in stable high gain circuitry.
REFERENCES:
patent: 1755479 (1930-04-01), Jones
patent: 3486998 (1969-12-01), Sellers et al.
patent: 3924175 (1975-12-01), Wilson
patent: 4059406 (1979-11-01), Fleet
patent: 4066528 (1978-01-01), Mansfield
patent: 4220916 (1980-09-01), Zimmermann et al.
patent: 4227988 (1980-10-01), Galwey et al.
patent: 4230554 (1980-10-01), Blanke
Galwey Ronald K.
Kanazawa Kay K.
Cummins R. E.
International Business Machines - Corporation
O'Shea Kevin D.
Roush G. E.
Tokar Michael J.
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