Temperature sensors are devices used to measure temperature that is generated by a system. It allows us to detect any physical change to that temperature by producing some output.
Classification of Temperature Sensors
Different types of Temperature sensors are available depending upon their applications.
Two basic physical types of Temperature Sensors are
- Contact Temperature Sensors.
- Non-contact Temperature Sensor.
These two basic types can also be subdivided into following three groups
- Electro-mechanical Temperature Sensors.
- Resistive Temperature Sensors.
- Electronic Temperature Sensors.
Contact Temperature Sensors
Thermal sensors that require physical contact with the object to operate is called contact thermal sensors. They use conduction to detect changes in temperature.
Non-contact Temperature Sensors
These types of sensors do not require physical contact with the object being sensed. They use radiation to detect temperature changes.