DEVICE FOR QUANTIFYING THE CONTENT OF AT LEAST ONE GASEOUS CONSTITUENT CONTAINED IN A GASEOUS SAMPLE FROM A FLUID, RELATED ASSEMBLY AND PROCESS

摘要

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 eac h gaseous constituent. It comprises a means (113) for combustion of the gaseou s 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 gaseou s flow. The quantification means (115) comprise an optical measurement cell (127) which is connected to the combustion means (113), and a means (161) fo r 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.