Gas analyzer and a method for operating the same
AssigneeABB Patent GmbH
InventorsWalter Fabinski, Peter Schastok, Werner Thies
Life of this patent
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Abstract
A gas analyzer having an analysis or sensor unit and having an electronic processing unit, and a method for operating such a gas analyzer. In order to achieve substantially improved safety both in handling corrosive and/or combustible and/or toxic gases in a not potentially explosive atmosphere (ex-free atmosphere), and in the operation of such an analyzer in an exatmosphere, the analysis or sensor unit as such is of non-explosive configuration and is arranged in a gas tight chamber through which a toxic and/or corrosive and/or combustible gas flows and around which a second chamber is arranged.
Claims4
A gas analyzer of the type that uses the principle of optical gas analysis comprising:
- an appropriate cuvette flowed through by a gas to be measured, said flowing gas providing a measuring pressure in said cuvette;
- said cuvette having a window region placed near an analysis space and said cuvette surrounded either only in said window region or overall by a chamber that isolates any leakage from said measuring cuvette when said gas analyzer is analyzing a toxic and/or corrosive and/or combustible gas that flows thru said analysis space said surrounding chamber is purged with inert gas or air and having a pressure higher or lower by comparison with said measuring pressure of said cuvette.
Dependencies are inferred from the claim text.