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15 October 2012 Variation of infrared spectrum of ethane with the change of temperature and pressure
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Proceedings Volume 8417, 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment; 84173Y (2012) https://doi.org/10.1117/12.977955
Event: 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT 2012), 2012, Xiamen, China
Abstract
With the advantages of high speed, low cost, easy online measurement and so on, infrared spectrum analysis is used more and more widely. The changes in temperature and pressure in the measurement of the natural gas in pipeline affect the prediction accuracy of the components. It is found that there is a good linear relationship between temperature and pressure with the spectral data. Within a certain range, the band absorption intensity and peak width of ethane of a certain concentration will increase as the total pressure increases, and the absorption peak area increases proportionally with pressure approximately. In the case of elevating temperature when the volume of gas is kept constant, the absorption peak area also increases proportionally with temperature. The correlation coefficient (Corr. Coeff) of the PLS model of the temperature reaches 0.99989, the RMS error of calibration (RMSEC) is 0.495, RMS error of prediction (RMSEP) is 0.893, and the maximum relative error is 2.20%.
© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Ming Kong, Shu-Xing Chen, and Chen Wang "Variation of infrared spectrum of ethane with the change of temperature and pressure", Proc. SPIE 8417, 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 84173Y (15 October 2012); https://doi.org/10.1117/12.977955
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