Description
With UV differential optical absorption spectroscopy (DOAS) analysis technology, it is mainly used in process gas control of the Claus industrial sulfur recovery process. The ratio meter measures the concentration of H2S and SO2 real-time, and calculates the molar ratio, then feeds back the signal to the control device that controls air intake to achieve feedback. It has significant advantages including low detection limit, accurate measurement results, easy calibration and alignment, simple and compact structure, no moving parts.