Gas sensor with increased measuring sesitivity

Details Gas sensor with increased measuring sesitivity Gas sensor with increased measuring sesitivity

G - Physics

01

N

G01N 27/00 (2006.01) G01N 1/34 (2006.01) G01N 27/16 (2006.01) G01N 27/26 (2006.01)

Patent

CA 2497433

A gas sensor (1) with a detector element (2), which is specific of the gas to be measured and sends a measured signal that depends on the measured gas concentration, has increased measuring sensitivity for measurements in the concentration range from less than 1 ppb to a few ppb. The detector element (2) is exposed in a gas admission adapter (4) to a gas to be measured via a diaphragm (3) arranged in front of it, wherein the gas admission adapter (4) has at least a first opening (20) for the entry of the gas to be measured as well as at least a second opening (30), which is connected with a pressure modulator, which generates periodic gas pressure vibrations in the gas admission adapter (4) and is designed, for example, as a pump (5).

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