Abstract: A device includes a device for forming a gaseous flow from the sample and a device for separation of each specific gaseous constituent. The device also includes a device for quantifying the relative contents of the two isotopes to be analyzed which comprise an optical measurement cell. The cell includes two mirrors which delimit a measurement cavity. The device includes a device for introducing an incident optical signal into the measurement cavity, a device for generating a plurality of reflections of the signal in separate points on each mirror during its travel in the cavity, a device for measuring a transmitted optical signal resulting from an interaction between the optical signal and each isotope in the measurement cavity, and a device for calculating the relative contents on the basis of these signals.

Abstract: This device includes a stage for forming a gaseous flow from the sample, and a column for separation by selective retention of each gaseous constituent. It includes an oven for combustion of the gaseous flow in order to form a gaseous residue from each constituent, and a quantification unit for quantifying the content of each constituent to be analyzed in the gaseous flow. The quantification unit includes an optical measurement cell connected to an oven, and a mirror for introducing a laser incident optical signal into the cell. The quantification unit also measures a transmitted optical signal resulting from an interaction between the optical signal and each gaseous residue in the cell, and calculates the content on the basis of the transmitted optical signal.

Abstract: This device comprises a means (111) for forming a gaseous flow from the sample, and a means (121) for separation by means of selective retention each gaseous constituent. It comprises a means (113) for combustion of the gaseous flow in order to form a gaseous residue from each constituent, and a means (115) for quantifying the content of each constituent to be analysed in the gaseous flow. The quantification means (115) comprise an optical measurement cell (127) which is connected to the combustion means (113), and a means (161) for introducing a laser incident optical signal into the cell (127). The quantification means (115) also comprise means (133) for measuring a transmitted optical signal resulting from an interaction between the optical signal and each gaseous residue in the cell (127), and means (125) for calculating said content on the basis of the transmitted optical signal.

Abstract: This device comprises a means (111) for forming a gaseous flow from the sample and a means (121) for separation of each specific gaseous constituent. It comprises a means (115) for quantifying the relative contents of the two isotopes to be analysed which comprise an optical measurement cell (127). The cell (127) comprises two mirrors (137A, 137B) which delimit a measurement cavity (147). The device comprises a means (161) for introducing an incident optical signal into the measurement cavity (147), a means (161) for generating a plurality of reflections of the signal in separate points (174A, 174B) on each mirror (137A, 137B) during its travel in the cavity, a means (133) for measuring a transmitted optical signal resulting from an interaction between the optical signal and each isotope in the measurement cavity (147), and a means (125) for calculating said relative contents on the basis of these signals.

Abstract: A portable dehumidifier is provided which includes an upper section housing a power supply, a small thermoelectric device intermediate a cold plate and a heat sink, and a blower fan. The blower fan provides the motive force to cause the humid air to come in contact with the cold plate. The cold plate causes the water vapor to condense from the air. The condensate drips from the cold plate into a trap where it is funnelled into a lower section. The upper section is mounted atop a lower section. The lower section includes a reservoir for collection the condensed water and is provided with a drain valve, float switch and vapor barrier. The drain valve permits the reservoir to be emptied of condensate. The float switch disengages the portable dehumidifier when the reservoir becomes full of condensate. The vapor barrier prevents the condensate in the reservoir from re-evaporating back into the system.