TWIN DIFFERENTIAL MOBILITY SPECTROMETER FOR DETERMINATION OF CONTAMINATION

摘要

Instrument for determination of contamination to detect and identify toxic contamination and enabling identification of gaseous substances in a broad range of humidity. The instrument has two DMS chambers (3, 6), between which there is an exchanger (4) with a semipermeable membrane (5). Between the exchanger (4) and the second DMS chamber (6), there is a reducer (10). The outlet of the second chamber (6) is connected, through a pump (12) and a filter (1.3) with molecular sieves, to the inlet of the second chamber (6) and, in parallel, through a pump (14) and a carbon filter (15), to the outlet of the exchanger (4). The inlet of the exchanger (4) is connected to an air intake (1), whose outlet is connected to the inlet of the first chamber (3).