Azbil Model AUD300C Advanced Ultrasonic Flame Detectors is designed to detect ultraviolet radiation from an oil or gas burner flame, for both batch and continuous operations. The AUD300C is used in combination with a dedicated burner controller. By means of the built-in shutter, any mal-function of the UV flame detector or burner controllers is detected by continuous self-checking (Dynamic Self -Check) function, ensuring highly reliable combustion safety control. Ambient temperature 100°C, IP66, vertical mounting possible and wiring distance 200 m Max. Condensing lens available depending on model. Inspection certification and tropicalization treatment options also available depending on the model. UL/FM approved  when combined with Model AUR450C Burner Controllers