Method and immersion sensor to measure electrochemical activity

G - Physics – 01 – N

Patent

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Details

G01N 27/416 (2006.01) C21B 7/24 (2006.01) C21C 5/46 (2006.01) G01N 27/411 (2006.01)

Patent

CA 2245919

The invention relates to a method and an immersion sensor to measure electrochemical activity of a layer lying on a molten mass using an electrochemical sensor comprising a measuring cell and a counter electrode. In order to reliably reproduce exact measurements in the layer, the measuring cell and the counter electrode are initially immersed in the molten mass, wherein the measuring call and the counter electrode are protected before they come into contact with said layer. The measuring cell and the counter electrode are then brought into contact with the molten mass and heated. Subsequently, the measuring cell is pulled up into the layer to carry out measurement, while the counter electrode remains in the molten mass during measurement. To this end, the measuring cell and the counter electrode are provided with a protective cap. The measuring cell is placed above the counter electrode when the sensor is immersed.

L'invention concerne un procédé et une sonde à immersion pour la mesure d'une activité électrochimique d'une couche située au-dessus d'une masse fondue, au moyen d'un détecteur électrochimique présentant une cellule de mesure et une contre-électrode. Afin d'obtenir, dans la couche, des mesures précises et rigoureusement reproductibles, la cellule de mesure et la contre-électrode sont tout d'abord immergées dans la masse fondue, la cellule et la contre-électrode étant protégées de tout contact avec la couche, puis ensuite amenées en contact avec la masse fondue et chauffées dans celle-ci. La cellule est ensuite remontée pour effectuer la mesure dans la couche, la contre-électrode se trouvant dans la masse fondue durant la mesure. La cellule de mesure et la contre-électrode présentent une coiffe de protection et, en position d'immersion du détecteur, la cellule de mesure est disposée au-dessus de la contre-électrode.

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