With the new ratio pyrometers of the CSvision family, it is possible to measure temperatures from 250 °C to 3000 °C reliably from variable distances without contact. The novelty of the CSvision series is the switchable two-step brightness reduction filter, which makes it easy to sight and focus on very bright objects. Due to the dual-channel measuring principle, the CSvision are largely insensitive to dust, steam and dirty viewing windows.