| abstract |
The invention relates to a method for functionally checking a sensor (10) for detecting particles, in particular soot, wherein the sensor (10) has at least two measuring electrodes (20, 22) and a substrate (18) on which the measuring electrodes (20, 22 ) are proposed proposed. The method comprises the following steps: performing a first current-voltage measurement for determining a first measured variable, performing a second current-voltage measurement for determining a second measured variable, wherein a measuring electrode (22) of the measuring electrodes (20, 22) to another electrical potential ( 50), performing a third current-voltage measurement to determine a third measurand and forming a correction value to correct the second measurand using the first measurand and the third measurand. |