The detection process of the analyzer is based on the principle of ultraviolet fluorescence method. The sample gas after the H2S in the air is converted into SO2 according to a certain conversion efficiency. Under the action of the SO2 gas molecules irradiated by the Zn lamp, it becomes the excited state SO2. When the excited state SO2 molecule returns to the ground state, it emits fluorescence. By measuring the change of fluorescence intensity, the concentration of SO2 in the sample gas can be measured, and finally converted to the concentration of H2S through the formula. The latest photoelectric technology is used in the analyzer, which can improve the technical performance and improve its reliability and stability. The analysis results can be directly displayed on the LCD on the front panel, and can also be uploaded to the local data receiving center through the network. Hydrogen sulfide has become an important air quality index and routine measurement item in environmental monitoring stations all over the world. This machine also provides an indispensable instrument and means for industrial and mining enterprises and colleges and universities in environmental air quality monitoring and scientific research.
The product meets the requirements of Q / wth 12-2016 th-2002b hydrogen sulfide analyzer, GB 3095-2012 ambient air quality standard, and HJ 654-2013 technical requirements and detection methods for continuous automatic monitoring system of ambient air gaseous pollutants (SO2, NO2, O3, CO).
◆ All Chinese menu operation interface is adopted, which is intuitive and convenient.
◆ The machine has fault alarm display, which can quickly determine the cause of the fault and take measures to solve it in time, so as to improve the operation efficiency of the equipment.
◆ The machine can realize automatic calibration, calibrate the instrument through remote control command, truly realize all-weather unattended, and improve the automation degree of the system.
◆ Remote monitoring function. This machine realizes the data transmission between the instrument and the upper computer of the sub station and the automatic monitoring of the instrument by the upper computer through the modern communication technology and a variety of Digital interfaces. The remote data transmission between the sub station and the central station is realized through the network, which provides a reliable guarantee for the environmental protection monitoring department to analyze and monitor the pollution source data.