James M Dougherty

Address:

3426 Mineral Run Ln, Spring, TX 77386

Phone:

(501)9080308

VIN:

1FTFW1CT6CKD42372

Make:

FORD

Model:

F-150

Year:

2012

US Patent:

41183002, Oct 3, 1978

Filed:

Jun 28, 1977

Appl. No.:

5/810834

Inventors:

Joe M. Victor - Houston TX
James Dougherty - Houston TX

Assignee:

Petrolite Corporation - St. Louis MO

International Classification:

G01N 2744

US Classification:

204195T

Abstract:

A coulometric titrator for determining, at high accuracy and without time delay problems, small amounts of a specific ion in a solution by the addition of a reactive ion. A sensor provides a signal voltage representing the logarithm of the specific ion concentration to a differential amplifier which also receives as an input a signal from a reference electrode. The differential amplifier produces an error signal applied to a comparator and referenced therein to a certain reference voltage representing a desirable range of rates of change of the error output voltage. The comparator provides a sensor signal voltage representing the difference between the error signal and reference voltage. This sensor signal voltage is applied to an antilogarithm converter which produces an output signal that is proportional to the antilogarithm of the sensor signal voltage. The output signal is received by a reactive ion (silver metal) source means associated with a current source passing a unidirectional current flow between an inert cathode immersed in the solution and the reactive ion source means as an anode for the introduction of the reactive ion (silver) into the solution.