Abstract
The paper presents possibility of application multiple of integrated spectroscopy for measuring CO concentration in a gas mixture. Sensors that are based on the method discussed can be applied in analyses of gas mixtures inside a power boiler or products of biomass gasification process. The principles of the method has been presented, however the main attention was paid to proper selection of the wavelength range and thus optoelectronic components. It would limit influence of disturbance factors and on the other hand, enable higher dynamic range of the CO analyser. Both simulation and laboratory tests that were presented in the paper would enable to build CO analyser that could operate in industrial conditions at acceptable measurement uncertainty. DOI: http://dx.doi.org/10.5755/j01.eee.19.9.5648
Highlights
Optoelectronic sensors are commonly used in various everyday applications, especially in technology
The operation of the vast majority of optoelectronic sensors is based on absorption spectroscopy, it utilizes measurement of light transmission within a particular wavelength range
For the integrated line spectroscopy the magnitude to be measured is the area under a few absorption lines
Summary
Optoelectronic sensors are commonly used in various everyday applications, especially in technology. One of significant field of application is power engineering, where they are applied both for controlling of fuel mixture composition and flue gas monitoring. Such sensors can be applied for measurement of atmosphere composition inside a power boiler [3]–[7] so as e.g. to estimate the threat of low-oxygen corrosion [8]. The operation of the vast majority of optoelectronic sensors is based on absorption spectroscopy, it utilizes measurement of light transmission within a particular wavelength range. It is commonly known that within the considered wavelength ranges, most of the measured substances reveal comparatively weak light absorption, yet their application seems to be promising taking their both attractive price and quality into consideration. Special measurement techniques have to be applied when weak absorption lines are utilized
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