Fusion Study of SF6/N2 Mixed Gas Purity by Infrared Spectrum and Laser Technology

The article investigates the fusion of infrared spectroscopy and laser technology for the detection of the purity of SF6/N2gas mixtures. SF 6 has a significant characteristic absorption spectrum in the infrared wavelength band (e.g., 10.5 μm), while N2 can be used as an analytical background because it does not absorb infrared light. Combining the high precision of laser technology and the high sensitivity of infrared spectroscopy, this study realizes the accurate measurement of SF 6 concentration by emitting a laser beam of specific wavelength, measuring the absorption characteristics of the mixed gases to the laser, and recording the absorption spectra with an infrared spectrometer. Experiments were designed with five concentration gradients (10.01 %, 19.98%, 29.990/0, 40.01 %, 49.99%) of SF6/N2gas mixture samples with strict calibration. The results show that the infrared absorption intensity and laser optical value both increase linearly with the increase of SF 6 concentration, which verifies the accuracy and reliability of the technique. The calculation method based on the Lambert-Beer law optimized the detection accuracy with an error rate of only 2.5%. This study optimized the sample processing, spectral acquisition, data processing and algorithms to improve the measurement efficiency and accuracy. The fusion of infrared spectroscopy and laser technology shows unique advantages in SF6/N2mixed gas detection, which has the potential for industrial applications, especially in the fields of electric power equipment maintenance, environmental protection monitoring and automated production, which can improve the performance of the equipment, ensure the operation safety, reduce the maintenance cost, and help the green and sustainable development.