Apparatus and method continuous measurement of the electrical co

Details Apparatus and method continuous measurement of the electrical co Apparatus and method continuous measurement of the electrical co

1989-09-19

1991-06-18

Eisenzopf, Reinhard J.

Electricity: measuring and testing

Electrolyte properties

Using a conductivity determining device

204 1T, 324439, 324444, G01N 2702

Patent

active

050252194

ABSTRACT:
An apparatus for providing a precise, continuous, and dynamic measurement of the electrical resistivity of a liquid medium. A dynamic measurement cell is provided with at least one conduit of electrically insulating material in which a conductive electrode slides with a motion of given amplitude. The lower portion of the conduit is calibrated over a length equal to at least the given amplitude, and has a known cross-section. The cell is immersed in a crucible containing the liquid medium for test at constant temperature to monitor various electric parameters. The monitoring system provides devices for controlling, adjusting, and measuring the amplitude and speed of the displacement of the electrode; measuring and adjusting the depth of immersion of the electrodes; and, measuring the variation, in ohmic resistance, of the cell as a function of the displacement of the electrodes. The conductivity is determined by an equation proportional to the ratio of the change in amplitude to the change in resistance.

REFERENCES:
patent: 2698539 (1955-01-01), Gridel et al.
patent: 3365376 (1968-01-01), Weyland
patent: 4769607 (1988-09-01), Bauman et al.

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