METHOD AND DETECTOR FOR DETECTING GASES

摘要

The aim of the invention is to improve the identification of individual gas compounds which co-exist with other compounds that have substantially higher concentrations. To achieve this, the adsorbent ( 2 ) is heated in a cyclic manner by a thermal shock treatment of the gas sensor ( 4 ) and the compounds that are released in cycles are diffused from the measured gas side through the membrane-type adsorbent ( 2 ) to the gas sensor ( 4 ) and are detected by the latter ( 4 ). The adsorbent ( 2 ) of the corresponding detector is configured as a flat or tubular membrane and is positioned directly adjacent to the gas sensor ( 4 ), without touching the latter. The adsorbent ( 2 ) separates the gas sensor ( 4 ) from the measured gas and is heated in a cyclic manner by the heater ( 6 ) of the gas sensor ( 4 ) in such a way that the desorbed gaseous compounds are identified using the active layer ( 5 ) of the gas sensor ( 4 ).