Gas sensor for detection of NO and NO2 and operating method for the gas sensor

摘要

The present invention comprises a gas sensor (10, 20, 30, 40, 50) for detecting NO and NO 2 in a gas mixture with - an oxygen ion conductor (11), - at least two electrodes (12, 13, 12) arranged on the oxygen ion conductor (11). 21), wherein - the gas sensor (10, 20, 30, 40, 50) is designed such that in its operation both electrodes (12, 13, 21) are in contact with the gas mixture, wherein the gas sensor (10, 20, 30, 40, 50) - a heating device (16) for heating the oxygen ion conductor (11) and the electrodes (12, 13, 21) to a temperature of at least 300 ° C, wherein the heating device (16) is configured, a ) to heat each of the at least two electrodes (12, 13, 21) to a different temperature, or b) to heat the at least two electrodes (12, 13, 21) to a same temperature, wherein the height of the temperature in a predetermined temporal Course is variable.