The LAS- series online SO₂ analyzer is a highly reliable gas analysis device specially designed for the sulfuric acid industry. It can continuously measure the SO₂ concentration at the inlet and outlet of the converter, and features resistance to SO₃ interference, high temperature resistance, acid mist dew point prevention, and corrosion resistance, ensuring long-term stable operation under complex sulfuric acid working conditions. It also provides a conversion rate calculation function to assist in process optimization and can achieve precise linkage control with the oxygen-sulfur ratio control system, enhancing conversion efficiency and system stability. By monitoring the changes in SO₂ concentration in real time and dynamically adjusting the oxygen-sulfur ratio, the optimal reaction conditions are ensured, and energy consumption and emissions are reduced.

The LAS- series online SO₂ analysis system is installed in a fully stainless steel cabin specially designed by Lizhenglai Technology for the sulfuric acid industry. The cabin is equipped with safety functions such as constant temperature, ventilation, toxic gas alarm, and explosion-proof, ensuring the stable operation of the equipment in harsh environments. The analysis system integrates an efficient SO₃ purification pretreatment system, pressure stabilizing and acid mist removal units to ensure the cleanliness and dryness of the analysis gas path. It effectively protects the analytical instruments from acid mist and SO₃ corrosion, meets the measurement requirements of the total conversion rate of the sulfuric acid plant, and provides conversion rate calculation software and diagnostic catalyst activity.