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US 2005/0090018 A1Published application
Method and detector capture of gases
OwnerAndreas Walte, Wolf Munchmeyerinventors
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OwnerAndreas Walte, Wolf Munchmeyerinventors
Estimating the term…
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).
Method for determination of gaseous compounds in air loaded with dust with a detector (1), wherein gaseous compounds are physically separated by a membrane shaped adsorbent (2) from a gas sensor, wherein the gaseous compounds in a cold state high enriched on the adsorbent (2) and are again released in a hot state by a warming of a gas sensor, characterized in that the adsorbent is cyclically heated by an alternating temperature operation of the gas sensor and the cyclically released compounds diffuse from the measurement gas side through the membrane shaped adsorbent to the gas sensor (4) in order to again capture the released compounds with the gas sensor.
The detector (1) for performing the method characterized in that the adsorbent (2) is disposed immediately at the gas sensor (4) in the form of a flat membrane or of a hose membrane without touching the gas sensor (4) and thereby separating the gas sensor from the measurement gas and wherein the membrane is cyclically heated by the heater of the gas sensor (6) through the hot sensor by way of convection, diffusion or thermal radiation such that the desorbed gaseous compounds can be detect it with the effective layer of the gas sensor (5).
Dependencies are inferred from the claim text.