Veolia Water Solutions & Technologies Support

Veolia Eau, Compagnie Generale Des Eaux

Neroxis Sa

Carine Beriet

Yves De Coulon

Cyrille Lemoine

Philippe Niedermann

The invention concerns a device for measuring the pH of an effluent, said device comprising means for measuring an item of information representative of the pH of said effluent intended to be brought into contact with said effluent. According to the invention, such a device further comprises means for modifying the pH value of said effluent close to said means for measuring.

PH value measuring device comprising in situ calibration means

An amperometric sensor circuit for measuring chlorine concentration in water. The circuit includes first and second working electrodes coated with a hydrophilic membrane. A power supply and biasing circuit is configured to deliver a generally constant voltage between the first working electrode and a reference electrode and to generally deliver a constant current between the second working electrode and a counter electrode. A measurement circuit measures the current between the counter electrode and the first working electrode. A processing circuit is provided for determining the chlorine concentration based on the current measured by the measurement circuit.

Device for measuring the free chloride content of water

An amperometric electrochemical sensor with a fixed potential used in a probe for measuring the content of an oxidation reduction substance dissolved in a liquid, in particular the chlorine content. The sensor () includes an insulating substrate (), a set of electrodes consisting of a working electrode (), an auxiliary electrode () and a reference electrode, at least one of the working electrode () and auxiliary electrode () being configured on the insulating substrate (). At least one of the working electrode () and auxiliary electrode () is covered with an insulating layer (), the insulating layer () including at least one opening exposing at least one of the working electrode () and auxiliary electrode ().

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Peseux, Switzerland

Carine Beriet