Thomson-csf

Socapex

Joel Perret

Didier Pribat

Gonzalo Velasco

Jean-Claude Rouffy

Michel Croset

Jean-Philippe Schnell

Jean C Rouffy

Noel Nouailles

In an electrochemical sensor, a gas analyzing electrochemical cell is implanted directly on a substrate wafer. The entire wafer is coated with enamel layers except at the places needed for the electrical connections. A fixing part fixes the sensor in a housing in such a way that the electrochemical cell is inside the housing which contains the gas to be analyzed. This fixing part provides imperviousness and prevents the gases from reaching the electrical connections.

Electrochemical sensor with integrated structure for the measurement of

A method for making a microcavity in an enamel layer is disclosed. For this purpose, a layer of a carbon-based material with the dimensions of the microcavity to be obtained is provided. This layer is coated with an enamel except in a limited zone. The unit is heated to high temperature so as to cause combustion of the carbon-based material. The combustion gases escape through the reduced zone.

Electrochemical sensor having microcavities

Disclosed is an oxygen sensor of the resistive type for the measurement of relative fluid concentrations of fluid reactive species. The following are disposed on one and the same substrate:

Temperature compensated resistive type sensor for the measurement of

Method to make microcavities and its application to an electrochemical

Electrochemical sensor for the concentrations of species in a fluid mixture comprising a measuring cell of the type having a partial pressure internal reference electrode incorporating a catalysis region in which the gaseous mixture is brought into thermodynamic equilibrium and functioning according to the so-called 'assay' process, so that only a small quantity of the gaseous mixture to be analyzed is admitted into the sensor. It also comprises a supplementary cell functioning as an ionic pump, so as to continuously modify the composition of the gaseous mixture admitted into the sensor under the control of a regulatable electric current.

Growing community of inventors

Plaisir, France

Joel Perret