Temperature Sensor Overview

 

There are two temperature sensing methods:

 

Contact sensing brings the sensor in physical contact with a substance or object. It can be used with solids, liquids or gases. Non-contact (infrared) temperature sensing reads temperature by intercepting a portion of the infrared energy emitted by an object or substance, and detecting its intensity. Non-contact is used to sense the temperature of solids and liquids. Non-contact cannot be used on gases due to their transparent nature