A thermal imager detects the radiation of objects or people by converting it into an electronic signal and transmitting it to a display screen. Modern TIs use a microbolometer sensor, which uses amorphous silicon or vanadium oxide to measure infrared energy and convert it into a color map of different temperatures.More info :thermal-imaging.uk

The sensor detects the thermal emissivity of the subject and compares it with the background temperature to generate a quality image. The more difference there is between the animal and its background, the better the quality of the image. The resulting imagery can be used to count animals, identify species, evaluate their activity, age, and sex; or determine if they are healthy.

Unlike visible cameras, thermal images are not affected by changing lighting conditions and can be used for 24/7 day/night imaging. Thermal images are also effective through many visible obscurants such as smoke, light fog, or light foliage.

Night Vision Redefined: The Advantages of Using a Thermal Imager

For environmental applications, wildlife ecologists are using thermal imagery to monitor the presence and behavior of predators. Using UAVs, they can detect roe deer fawns in meadows before or during mowing operations and have shown that the system can achieve detection distances of 30-40 m.

Klein Tools’ thermal imaging camera line includes a variety of models. Depending on the application, some models have the ability to overlay a digital photo onto the thermal image. This allows the user to document a problem with a visual reference and communicate its location accurately to others. Other models are designed to scan electrical systems and equipment for hot spots, wires that are overheated, faulty steam traps, and clogged drains; locate moisture behind walls or in flooring; and more.