The LGA-350 oxygen analyzer is based on the principle of Tunable Diode Laser Absorption Spectroscopy (TDLAS) technology. It utilizes the tunability of laser wavelength, where the emission wavelength of the laser changes with the variation of operating temperature and current. By periodically modulating the current, the laser wavelength can be periodically changed within a small range, and the “single line absorption spectrum” value of the measured gas and the spectrum data of interference factors such as background gas and dust can be obtained within each cycle. The appropriate absorption spectral lines and laser modulation parameters can be selected based on the on-site working conditions.
Features
Directly installed in process gas pipelines. No need for of the complex sampling and preprocessing systems;
Wide viewing angle OLED screen, low power consumption;
Smaller drift and high stability. Long calibration cycle that require low maintenance work;
Not affected by background gas interference. The spectral width is less than 0.0001nm. The width is much smaller than the measured gas absorption spectrum. The laser frequency modulation scanning range only includes the single absorption spectral line of the measured gas, thus eliminating the influence of background gas cross-interference.
Not affected by dust and window pollution interference.
Application
