Temperature sensor

A device that detects temperature, converts it into an electrical signal, and outputs it. Temperature sensors are broadly classified into two types: contact and non-contact. The contact type measures temperature by directly touching the target object, which has the disadvantage of potentially changing the temperature of the object due to contact. Therefore, the object being measured must be large enough so that its temperature does not change. In contrast, the non-contact type measures the thermal radiation emitted from the object, offering the advantage of not causing any temperature change. They are often used to operate forced cooling fans or heating elements to keep the temperature of electrical and electronic equipment within a specified range.