Sensor element
OwnerLothar Diehlinventor
Life of this patent
Estimating the term…
Abstract
A sensor element is secured in a housing by a sealing packing, for example, and has a measurement area and a lead wire area. At least one lead wire having a first electric resistance with a positive temperature coefficient to a measurement device arranged in the measurement area is provided in the lead wire area of the sensor element. The lead wire area has at least one second electric resistance having a negative temperature coefficient. The first resistance and the second resistance as well as a third resistance of the measurement device enter into a total resistance. The temperature coefficients of the first and second resistances are coordinated so that the total resistance remains at least approximately constant when there is a change in the temperature distribution in the lead wire area of the sensor element.
Claims13
A sensor element, comprising:
- a measurement area;
- a lead wire area;
- a measurement device arranged in the measurement area;
- and
- at least one lead wire having a first electric resistance to the measurement device and being provided in the lead wire area, wherein:
- the first electric resistance has a positive temperature coefficient in at least some areas,
- the lead wire area has at least one second electric resistance that has a negative temperature coefficient,
- at least the first electric resistance, the at least one second electric resistance, and a third electric resistance of the measurement device form a total resistance, and
- the positive temperature coefficient and the negative temperature coefficient are coordinated so that the total resistance remains at least approximately constant when there is a change in a temperature distribution in the lead wire area.
Dependencies are inferred from the claim text.