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Temperature sensors play an important role in modern industries and everyday life. A temperature sensor measures the temperature or temperature-like properties in our environment and then converts this information into an electronic signal. Temperature sensors come in a variety of shapes, sizes and technology.

Thermostats are temperature sensors that measure surrounding temperature and control output systems, such as heating and cooling units, based on the temperature reading. The digital thermostat is a commonly known temperature sensor. It is programmed to turn on and off the heating and cooling systems based on the set temperature. It is a simple, effective tool.

Mechanical temperature sensors are a common choice for applications where electrical output is not required. These devices are typically used in building automation systems, switches, pumps, compressors, and other related applications. Commonly used mechanical temperature sensors consist of two separate parts: a sensing and control element. In most cases, the sensing element is attached to a temperature sensor that receives the input temperature. The control element is wired to the receiving temperature sensor to actuate the desired output.

The application field of temperature sensors is wide. Temperature sensors have been used in a variety of industries, such as automotive and aerospace, medical and food processing, mining and energy, laboratory and process control, and consumer electronics. In addition, temperature sensors are used in many consumer products, such as home appliances and HVAC units.

The working principle of a temperature sensor depends on the type of device. Optical temperature sensors measure the radiation emitted from an object and convert it to an electrical signal. Capacitive temperature sensors measure the capacitance of a material that changes when the temperature changes, and thermistors measure change in resistivity when temperature changes. Common technologies used for temperature sensors include thermistors, thermocouples, RTDs, and thermopile.

In summary, temperature sensors come in a variety of sizes and shapes. Thermostats are temperature sensors that measure surrounding temperature and control output systems. Mechanical temperature sensors are used in applications where electrical output is not required. Temperature sensors are widely used in many industries, and the working principle of them varies depending on the type of device.