Working principle of temperature sensors

Working principle of temperature sensors1, the thermal resistance: in accordance with the principles of the resistance wire of the temperature change
2, a thermocouple: a two conductor contact, the junction will have a stable electromotive force; same conductor ends at different temperatures, between the both ends of the electromotive force of a certain size
3, liquid thermometer: is the use of temperature-sensitive liquid thermal expansion of the principle of work
Most of Car Temperature Sensor resistive sensor,
That is, he himself is a resistor, as the temperature changes, the corresponding change in the resistance value, the resistance change of the desired temperature and Crank Shaft Position Sensor is a linear relationship, but which does not actually exist, the general performance to have good linearity within a certain temperature range performance. So when you want to select the temperature sensor for specific models of the original operating temperature range.