This product uses ultraviolet fluorescence method. When exposed to ultraviolet light, the electrons inside it will change from the ground state to the excited state, and produce characteristic fluorescence when returning to the ground state. The photomultiplier tube converts the fluorescence intensity signal into an electrical signal, and the SO2 concentration in the air is obtained by measuring the electrical signal.
The pulsed xenon lamp light source is adopted, and the independently designed xenon lamp control module has a long service life. It has the function of light intensity attenuation feedback and light intensity adjustment, and has timely reminder to replace the light source. All of these ensure the validity of the data.
The detection limit of the SO2 analyzer is as low as 0.5ppb, which meets the monitoring needs of southern cities with low SO2 background values.
With modular design, it is convenient to operate and maintain. It has startup self-test and operation self-diagnosis functions, which is convenient for users to quickly locate and judge faults.
It can be applied to air quality monitoring, emission source monitoring, air component stations and roadside stations, emission monitoring in industrial parks, and navigation investigation.