Gas sensor with temperature control

A gas sensor for measuring at least one analyte in a gas comprising

• a sensing patch of sensing material having an electrical conductivity depending on a concentration of the analyte,
• electrodes in electrical contact with said sensing patch of sensing material,
• a heater arranged at a location of said sensing patch,
• a first temperature sensor for measuring a temperature at the location of said patch,
• a temperature controller having a feedback loop (22, 23) controlling a current through said heater in order to try to maintain said temperature at the location of said sensing patch at a desired value, and
• an evaluation unit adapted to measure a first parameter indicative of an electrical conductivity of said sensing patch,
• characterized in that said evaluation unit is further adapted to
• measure a second parameter indicative
• a) of a heating power required to maintain said temperature at the desired temperature and/or
• b) of a deviation of the temperature at the location of said sensing patch from said desired temperature
• and to combine said first and second parameters for evaluating a resulting parameter indicative of a presence of said analyte in said gas.