| 摘要 |
Method for determining soot in exhaust gases of burners or internal combustion engines by means of a sensor element (10) which has at least two measuring electrodes (14, 16) exposed to the exhaust gas and a heating element (40), wherein a voltage (UIDE) is applied to the at least two measuring electrodes (14, 16) during a measuring phase and the current flow (IIDE) established between the measuring electrodes (14, 16) or electrical resistance is determined and is output as a measure of the particle concentration or the particle mass flow, characterized in that the temperature (T) of the sensor element (10) is monitored during the measuring phase and the sensor element (10) is heated by the heating element (40) if the temperature (T) of the sensor element (10) undershoots a limit temperature (TG). |
