Infrared temperature sensors

The infrared (IR) temperature sensors are devices designed to measure the temperature of an object or surface without physical contact. They use infrared radiation emitted by a body to determine its temperature, making them ideal for applications where it is not possible or practical to use contact sensors.

IR sensors detect the thermal radiation emitted by an object and convert it into an electrical signal proportional to the temperature. The operation is based on Planck's radiation law, which states that all bodies emit infrared radiation according to their temperature.

The sensor uses:

• A lens or optical system to focus the radiation.
• An infrared detector that converts radiation into an electrical signal.
• An internal processor to calculate the temperature according to the emissivity of the material.