Line sampling, truly reflecting the actual environment
Long path open optical path monitoring of the average gas concentration within a range of several hundred meters can eliminate the influence of highly concentrated pollution emission sources on measurement, resulting in more representative measurement results. Compared with traditional point systems, it has made significant improvements and is more conducive to the characterization and evaluation of environmental air quality.

Anti interference, accurate and reliable monitoring results
By using DOAS technology, the effects of stray light, atmospheric turbulence, humidity, aerosol particle concentration, optical path transmission attenuation, and mutual interference between different pollutants can be eliminated.

Capable of monitoring multiple gases simultaneously, with strong scalability and functionality
In addition to the main pollutants currently reported/forecasted in daily newspapers, such as: S0₂、 N0₂、 0₃Wait, we can also deal with C₆H₆、 C₇H₈The CH₂O、 NH₃Monitoring of benzene and organic compounds makes the entire system easy to expand without the need for additional hardware equipment.

No need for daily spectral calibration
By using a CCD array detector, all the required spectra can be obtained at once without switching spectral intervals. The spectrometer truly has no moving parts, so the measured spectra are stable and mercury lamps should not be used for spectral calibration.

No need for daily gas calibration
The gas concentration inversion algorithm uses publicly published and scientifically recognized absorption spectroscopy standards as references for calibration, thus having great advantages and eliminating the need for daily calibration work, truly achieving uninterrupted continuous data collection.

Easy installation site selection
Due to the use of a transmitter receiver integrated telescope system, only single-sided power supply is required; The reflector end does not require a power supply, making it easy to locate, install, and maintain. It can monitor areas with harsh environments that are not suitable for sampling.

Strong environmental adaptability
The use of ultraviolet enhanced back illuminated CCD detector and imaging focusing optical system enhances the dynamic range of light signal detection. Through automatic adjustment of integration time, it can adapt to complex meteorological conditions such as rain and fog, making the system widely adaptable to the environment.

Easy maintenance and low operating costs
The system does not require daily calibration, and gas calibration is equipped with a dedicated device, requiring only one routine calibration per year; Replace the light source 1-2 times a year. The system consumes less power and has lower operating and consumable costs.

Rich software features and strong automatic processing capability
The software not only meets all the requirements of the environmental protection department, but also has personalized device operation, automatic data collection and file processing, automatic alarm and remote maintenance functions, and generates various messages automatically, while displaying them in tables and graphics.