Title: Device for measuring oxygen concentration in molten-metal

Abstract: The present invention is directed to an improved method of measuring oxygen concentration in molten metal using the galvanic oxygen concentration cell method. It consists of providing a layer of inert gas between the cell electrolyte and the melt, this prevents contamination of the electrolyte while at the same time allows it to be in thermal and chemical equilibrium with the melt, resulting in continuous measurements of oxygen activity from which oxygen concentration may be calculated. Novel probes are disclosed which include a solid electrolyte oxygen concentration cell, a cavity for containing the inert gas adjacent the cell electrolyte to prevent contact between it and the molten metal and a thermocouple for temperature measurements.

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Inventors: Hone, Michel (St. Placide, CA, US)
Houot, Serge (Lambersart, FR)

Application Number: 607195
Filing Date: 1975-08-18
Publication_date: 1977-02-08
Assignee: Canadian Patents and Development Limited (Ottawa, CA)
Primary Class(es): 204/423 204/422
Other Classes:
US Patent Ref:

3046786	Jul, 1962	Tessem	204/195.
3378478	Apr, 1968	Kolodney et al.	204/195.
3400054	Sep, 1968	Ruka et al.	204/195.
3752753	Aug, 1973	Fitterer	204/195.
3776831	Dec, 1973	Roy	204/195.
3791954	Feb, 1974	Noda et al.	204/195.
3838021	Sep, 1974	Arbiter	204/195.
3864231	Feb, 1975	Richardson	204/195.
3864232	Feb, 1975	Handman et al.	204/195.

Other Refs:
Primary Examiner: Tung, T.
Assistant Examiner:
Attorney: Rymek; Edward