What is UV Flame Detection?
The UV spectral band, because of its short-wave characteristics, is absorbed in the surrounding atmosphere by air, smoke, dust, gases and various organic materials. Hence UV solar radiation dispersed in the atmosphere (especially at wavelengths shorter than 300 nanometers – the solar blind spectral band) being absorbed by the surrounding atmosphere, will not create false alarms for the UV flame detector. The UV spectral signature of some flames has a pattern that can be readily recognized over the background radiation. UV detectors based on this technology detect flames at high speed (3-4 milliseconds) due to the high-energy UV radiation emitted by fires and explosions at the instant of their ignition. However, this discernible UV radiation emitted by a flame from a distance (several meters) in outdoor applications can be attenuated by atmospheric pollutants such as smoke, smog, hydrocarbon vapors and organic material accumulated on lenses or detector windows. In addition, the occurren
