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General information on the ULTRA.sens® / UVRAS

An EDL (electrodeless gas discharge lamp) is used to detect NO and H2S. A combination of both technologies (UVRAS & UVLEDs) allows a simultaneous gas analysis of NO, NO2 and SO2 in the lower ppm range, which is particularly important in flue gas analysis (CEM).

In the EDL, N2 and O2 are converted to NO and generate selective UV radiation. With this radiation, a cross-sensitivity-free NO measurement is made possible. This method is called UV resonance spectroscopy (UVRAS).