Patent ID: 8197135

Claim:
A sensor system for determining a physical, measured variable, comprising: a sensor; and a control/evaluation unit, which are spatially separated from the sensor and electrically conductively connected with the sensor via a cable having at least two conductors, wherein: provided in said sensor are a temperature measuring element for determining temperature and a sensor identifier for sensor identification; said control/evaluation unit drives said temperature measuring element and said sensor identifier with a positive voltage or a negative voltage via a shared conductor of said at least two conductors and, depending on the applied voltage, reads a temperature measured value of said temperature element or an identifying value of said sensor identifier; a temperature-dependent resistance is provided in said temperature measuring element; and an identifying resistance is provided in said sensor identifier; and in series with said temperature-dependent resistance and/or in series with said identifying resistance, in each case, an electrical blocking element of opposed blocking direction is provided.