1、 HJ 919-2017 Determination of volatile organic compounds in ambient air Portable Fourier transform infrared method

2、 HJ 920-2017 Portable Fourier transform infrared method for emergency monitoring of inorganic harmful gases in ambient air

3、 HJ 1011-2018 Portable Fourier Transform Infrared Monitoring Instrument for Volatile Organic Compounds in Environmental Air and Waste Gas Technical Requirements and Testing Methods:

Beijing Leshi Lianchuang Technology Co., Ltd. is a national high-tech enterprise and also undertakes national scientific research projects. LeShi Technology is mainly engaged in the sales and technical services of VOC and ultra-low emission gas analyzers. In recent years, with the dynamic collimation of Fourier transform infrared spectrometers, the application of high sensitivity, high signal-to-noise ratio detectors, multi-channel gas pools and other technologies, as well as better spectral preprocessing methods and the adoption of quantitative modulus LST 9100 FIRair portable Fourier transform infrared gas analyzer, it has gradually become the mainstream in the field of gas analysis. 9100 FIRair is a portable Fourier transform infrared multi-component gas analyzer independently developed by Le Shi Technology. 9100 FIRair adopts full spectrum analysis technology, and one analyzer can test all substances with absorption in the infrared spectrum range. Therefore, 9100 FIRair can theoretically test thousands of gas species. The instrument has a sturdy structure, strong mobility and seismic resistance, and is suitable for continuous monitoring tasks in complex and harsh working conditions.

The instrument adopts the most advanced and mature technology for in situ sampling and analysis internationally, which can perform qualitative and quantitative analysis of organic and inorganic gases at high temperature, in situ, non-destructive, fast, and simultaneously. Unlike electrochemical instruments and ordinary infrared instruments, the 9100 FIRair adopts advanced mathematical modeling algorithms to accurately measure each gas component to be tested, avoiding significant measurement errors caused by gas cross interference. 9100 FIRair is currently one of the analytical products on the market with high cost-effectiveness and flexibility.

Multiple qualitative components: Provide a rich qualitative spectrum library according to customer needs, with over 5500 types of substances;

Reference light source: Adopting a vertical cavity surface emitting laser, the light source has good stability, a lifespan of up to 10 years, and low maintenance costs in the later stage.

◎ High performance detector at room temperature: using high-performance DTGS detector at room temperature, it can be used without refrigeration and has the characteristics of wide infrared activity range, wide linear range, and long service life;

◎ Special reverse blowing port: The instrument has a nitrogen reverse blowing interface, which can achieve reverse blowing of the gas chamber and keep it clean and uncontaminated. A dedicated internal light path nitrogen blowing interface can blow optical components to improve cleaning ability, ensuring that the instrument has sufficient light flux and sensitivity;

◎ Strong chemical stoichiometry capability: The analysis software is equipped with multiple analysis methods and uses powerful PLS algorithms, with strong qualitative and quantitative capabilities for substances;

Flexible data processing: The instrument can record test data in real time, and the data can be exported and downloaded. It can also be opened in Excel format for data processing, and new gases can be analyzed offline again;