CEMS has four basic parts: the dust monitoring subsystem, gaseous pollutants monitoring subsystem, flue gas parameter monitoring subsystem, system control, and data acquisition and a processing subsystem. It can monitor SO2, NOx, O2, dust, temperature, pressure, flow rate and other parameters such as HCl, HF, CO, CO2 for a particular occasion. After dedusting by sampling probe, tracing by heating pipe, the measured gas is analyzed by the hot gas analysis module (TDLAS and DOAS technique). The CEMS monitoring system
is an effective solution to the technical problem that the absorption of SO2 by condensation water leads to low measuring data. Especially in low concentration measurement occasions, it has incomparable advantages.