Method for operating sensor element for determining property of gas in measuring gas chamber, particularly for determining oxygen portion in gas, involves using sensor element with pump cell

摘要

The method involves using a sensor element (110) with a pump cell (128), where the pump cell has two electrodes (114,118) and a solid electrolyte (124) connecting the two electrodes. The latter electrode is arranged in an electrode cavity (120). The electrode cavity is connected with a measuring gas chamber (112) over a diffusion barrier (122) limiting a gas flow. The latter electrode is heated, and the heating takes place in an inhomogeneous manner. A source of precious metal is arranged in the electrode cavity.