Enriching device for trace gases used in mobile and stationary gas sensor systems comprises gas chamber for buffering arranged between conveying unit and enriching element

摘要

A device for enriching trace gases comprises a gas path with an enriching element (2) and a conveying unit. A gas chamber (3) for buffering is arranged between the conveying unit and the enriching element. Preferred Features: The enriching element comprises a hollow body filled with an adsorbent. The device also has a unit for thermostating the enriching element. The conveying unit comprises two pumps (4, 5) having an opposing direction to charge the gas path via a three-way valve (7).