GAS SENSOR WITH INCREASED MEASURING SESITIVITY

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 elemen...

Full description

Saved in:
Bibliographic Details
Main Authors CHRZAN, RIGOBERT, DIEKMANN, WILFRIED, NAUBER, ANDREAS, BERNSTEIN, CHRISTOPH, SICK, MICHAEL, HAUPT, STEPHAN, KRUEGER, DIETER
Format Patent
LanguageEnglish
French
Published 23.06.2009
Subjects
Online AccessGet full text

Cover

Loading…
More Information
Summary: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). Un capteur de gaz (1) à élément de détection (2), qui est propre au gaz à mesurer et qui envoie un signal qui dépend de la teneur en gaz mesurée, ayant une sensibilité accrue pour pouvoir mesurer une teneur de moins de 1 ppb à quelques ppb. L'élément de détection (2) est exposé dans un adaptateur d'admission de gaz (4) à un gaz mesuré via un diaphragme (3) à l'avant de celui-ci; l'adaptateur d'admission de gaz (4) a au moins une ouverture (20) pour que le gaz à mesurer y pénètre ainsi qu'au moins une deuxième ouverture (30), qui est reliée avec un modulateur de pression, qui produit périodiquement des vibrations de gaz dans l'adaptateur d'admission de gaz (4) et qui est conçu, par exemple, comme une pompe (5).
Bibliography:Application Number: CA20052497433