How do users verify linear temperature sensors?
After purchasing the sensor, the user can use the two-point or three-point test according to the size of the temperature zone under constant current conditions to check the interchange accuracy, linearity and temperature coefficient. In general, the simplest test method is to check the reference voltage value. All electrical parameters are delivered with a parameter list (certificate) to provide detailed parameter specifications for the batch of sensors.
The following conditions are required for the test conditions:
Constant current source: 100μA ± 0.5%;
Constant temperature field: fluctuation: ≤ ± 0.05 ° C;
Test instrument: 41/2 or 51/2 digital voltmeter.