In the introduction the meaning og thermography and thermal imaging camera is described.The whole process starts from body radiation in the infrared spectrum, continues with the transmission of radiation from the measured object to the camera, conversion from analog to digital signal and finally the picture the observer sees on the screen and the way the observer interprets this picture. The whole camera and all here basic parts. Every component has its own job to do, and if some of the components break down, the end result will be incorrect. Because of this it is of vital importance to know all parts and components of the camera and know what every of the components can do. Connecting the camera to the computer and selecting the proper software support are of vital importance to obtaining results for determination of failure, place of failure and the reason of it appearing in the first place.There is a wide range of tools and applications which are used and it is essential to know how this tools work because of further work. Thermo vision and the cameras are often used in all spheres of life and are more often and often used in facilities and drives for determining failures and malfunctions.