Gasboard 3000 flue gas analyzer can be used for measurement of the concentration of SO2, NO,CO,CO2 and O2 components in the flue gases. It is based on the micro-flow type non-dispersion infrared (NDIR) method for SO2,NO,CO,CO2 and O2 is measured by electrochemical cell method. This analyzer is designed with 19 inches 3U smaller physical dimensions.