Trial
Compare the resistance between contacts #1 and #2 of the sensor with that indicated on the graph, at the corresponding temperature. The resistance should be close to that indicated.
Note: Immerse the sensor in cold water and measure the resistance, then add hot water and check the change in resistance.
Caution: The sensor contains a thermistor, which may be damaged by large currents during testing. Therefore, use only a tester with an output current of 1 mA in the range of 20 kΩ.

