High purity water calibrating device

Details High purity water calibrating device High purity water calibrating device

1985-10-24

1987-09-01

Eisenzopf, Reinhard J.

Electricity: measuring and testing

Electrolyte properties

Using a conductivity determining device

204409, 73 1R, 324438, G01N 2702

Patent

active

046911685

ABSTRACT:
Apparatus for calibrating a conductivity instrument having a conductivity cell and a conductivity measuring instrument operatively associated with the conductivity cell, includes a conduit for supplying high purity water to be measured; a first flow line for supplying the high purity water from the conduit to the conductivity cell; a second flow line for supplying the high purity water from the conduit to the conductivity cell; a mixed bed ion exchanger in the second flow line for de-ionizing the high purity water flowing through the second flow line; and a valve which selectively supplies the high purity water to the conductivity cell, from either the first flow line to provide a conductivity measurement of the high purity water or the second flow line to calibrate the conductivity cell.

REFERENCES:
patent: 3839162 (1974-10-01), Ammer
patent: 3897213 (1975-07-01), Stevens et al.
patent: 4384925 (1983-05-01), Stetter et al.
patent: 4445091 (1984-04-01), Kusebauch et al.

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