Commissariat &#xc0; L'&#xc9;nergie Atomique Et Aux &#xc9;nergies Alternatives

Bertrand Bourlon

Eric Ollier

Raymond Charles

Thomas Alava

Florence Ricoul

Jean-Francois Beche

Bruno Truong

Valeria Toffoli

Bao-An Pham Ho

Jean-François Beche

Morgan Cellier

Thomas Chappuis

Amélie Bellemin Comte

Frédéric Progent

A fluid network controls a gaseous flow, the fluid network having several pre-concentration units including at least one first series in which the pre-concentration units are linked in series and each defined by a rank j in the series, with j ranging from 1 to m and m being greater than or equal to 2. Each pre-concentration unit of the network includes a cavity filled with an adsorbent material, at least one first fluid pathway emerging in the cavity, at least one second fluid pathway emerging in the cavity. Finally, each pre-concentration unit includes a component for heating the cavity.

Fluid network for controlling at least one gaseous flow and system employing said network

A microelectromechanical gas sensor including a fixed part, at least one suspended part in relation to fixed part, at least one sensitive zone carried on the suspended part, the sensitive zone being able to adsorb/absorb and desorb gaseous species or families of gaseous species, a heater for heating at least the sensitive zone, a detector for detecting the adsorption/absorption and desorption of gaseous species or families of gaseous species on the sensitive zone, a controller of controlling the heater so that the heating is applied to at least the sensitive zone with one or more temperature profiles ensuring the adsorption/absorption and desorption of the gaseous species in a controlled manner so as to obtain an individual desorption of each species or families of gaseous species.

Compact gas sensor with enhanced selectivity

A device for analyzing a gaseous sample including a first housing including a detection assembly housed in the housing including a preconcentrator, a chromatography column and a detector intended to detect the presence of the separated compounds, a sampling assembly including a cartridge that is removable relative to the first housing, a control and processing unit housed in the housing and configured to execute an analysis operating mode capable of generating a first command for the detection assembly to analyze a first gaseous sample, a second command to determine the exceeding of at least one alert threshold and, if an alert threshold is exceeded, a third command for the sampling assembly to take a second gaseous sample.

Device for taking and analyzing a gaseous sample

Device for analyzing a mixture of n gases, comprising a microfluidic channel () extending between a first end and a second end, at least n&#x2212;1 suspended elements in the microfluidic channel (), said n&#x2212;1 elements (S1, S2 . . . Sn&#x2212;1) succeeding one another from the first end of the microfluidic channel () to the second end of the microfluidic channel (), heating means capable of heating a part at least of the gaseous mixture surrounding each suspended element (S1, S2 . . . Sn&#x2212;1) to a given temperature different to those to which are heated the gaseous mixtures surrounding the other suspended elements (S1, S2 . . . Sn&#x2212;1), means of measuring the temperature or the variation in temperature of the suspended elements (S1, S2 . . . Sn&#x2212;1) and a control and measurement system (UC) connected to the heating means and to the measuring means.

Device for analysis of mixtures of at least two gases

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Saint Martin le Vinoux, France

Bertrand Bourlon