Method for detection of different gases in gas mixtures with mixture potential sensor, involves operating exhaust-gas electrode, by mixture potential behavior, at constant operating temperature

摘要

The method involves operating a exhaust-gas electrode (11), by mixture potential sensor (10), at a constant operating temperature, and in a measuring phase the loading of the electrode potential is changed sequentially by changing the resistance of the loading resistance, so that the extreme values of the sensor voltage shifts the temperature corresponding to operating temperature. The method has a reference electrode (13) arranged in an air reference room (12), which is separated from the exhaust gas chamber by solid electrolyte (14), which has yttrium stablized zirconium oxide. An independent claim is also included for a mixture potential sensor for implementing method, has a exhaust-gas electrode arranged in an exhaust gas chamber with mixture potential behavior, a reference electrode arranged in a air reference chamber, which is separated.