Patent ID: 11927492
Assignee: ALLEIMA TUBE AB
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 5:
6. A sensor system for sensing strain and temperature of a metallic object, comprising:
a sensor according to claim 2;
a cold junction temperature detector configured for detecting an isothermal temperature of the first connection point of the first electrical conductor and the connection point of the metal object and the metal object;
a temperature circuit connected to the first terminal and to the metal object terminal and configured to measure a temperature of the cold junction, wherein the temperature circuit is further connected to the cold junction temperature detector for compensating for a cold junction temperature of the first connection point of the first electrical conductor and the connection point of the metal object;
a strain circuit connected to the first terminal and to a second terminal for determining a strain based on a change of resistance of the strain sensitive part, wherein the second terminal is connected to the second connection point via a third wire; and
a calculation circuit connected to the temperature circuit and to the strain circuit, wherein the calculation circuit is configured to determine a strain caused by the applied mechanical strain on the metal object and a temperature induced strain of the metal object.