METHOD FOR CONTROLLING AND DIAGNOSING A SENSOR ELEMENT FOR DETECTING AT LEAST ONE PROPERTY OF A GAS IN A MEASUREMENT GAS SPACE

摘要

The invention proposes a method for controlling and diagnosing a sensor element (10) for detecting at least one property of a gas in a measurement gas space. The sensor element (10) has at least one heating apparatus (14). The method comprises at least the following steps: controlling the heating apparatus (14) by means of at least one pulse width modulation, wherein the pulse width modulation is carried out at at least one pulse width modulation frequency, and defining a minimum switched-on duration and a minimum switched-off duration of the heating apparatus (14) at a diagnostic frequency, wherein the pulse width modulation frequency differs from the diagnostic frequency.