UDC 681.7
This paper analyzes an innovative approach to determining the concentration of gases in the environment based on the optical-absorption method. The essence of the innovation is to replace the traditional optical-acoustic receiver with a pyrometric sensor, which reacting to thermal radiation, allows to register temperature changes caused by light absorption by the analyzed gas. This approach opens new perspectives in the field of gas analysis, as it may have a number of advantages over existing technologies, although it requires more in-depth study. Large-scale mathematical modeling has been carried out to comprehensively evaluate the efficiency and accuracy of the developed instrument. The obtained results clearly demonstrate a significant nonlinear dependence of the output signal of the gas analyzer on the concentration of the determined substance. This nonlinearity, being a specific feature of this device, requires special attention during data processing and calibration curves construction. It is important to note that consideration of this nonlinearity is a critical factor in ensuring high accuracy of measurements. The paper presents a comprehensive and in-depth study of a new optical-pyrometric gas analyzer, including design, detailed mathematical modeling, analysis of nonlinear characteristics, and comprehensive error evaluation. The results of the study are of significant importance for the development of gas analysis technologies and may find wide application in various fields, from environmental monitoring to industrial process control. The presented data allow us to evaluate the potential advantages and limitations of the new method, opening new avenues for further research and technology improvement
quantitative analysis, substance concentration, gas analyser, optical-pyrometric gas analyser, mathematical model, static characteristic, uncertainty
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