Method of detecting the onset of formation of adherent precipita

Details Method of detecting the onset of formation of adherent precipita Method of detecting the onset of formation of adherent precipita

1974-09-26

1976-04-20

Cohan, Alan

Fluid handling

Processes

With control of flow by a condition or characteristic of a...

137 98, 23230C, 23253C, 204 1T, 204195C, 324 64, 324 65CR, 324 71R, G01R 2702

Patent

active

039511618

ABSTRACT:
The method comprises employing electrical contact resistance to sense whether or not there is incipient precipitation of adherent scale, paraffin wax, etc., on surfaces immersed in various liquids. The method is surprisingly sensitive, and otherwise effective, even when the liquids are electrically conductive. The method further comprises performing certain steps relative to the submerged surfaces, and/or relative to the liquids, in order to control precipitate formation. The selection of polarity, materials, etc., is caused to be such that sensitivity is maximized, and electrolytic dissolution of the submerged elements is minimized.

REFERENCES:
patent: 2374088 (1945-04-01), Fontana
patent: 2476104 (1949-07-01), Mason
patent: 3748247 (1973-07-01), Weisstuch

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