Abstract
The conductance versus time responses of a thermally cycled Figaro #813 gas sensor have been measured for clean laboratory air with the addition of several gases (hydrogen, propane, isopropanol and carbon monoxide) and their bicomponent mixtures. Output sensor signals are represented as linear combinations of two or more Gaussian functions. It is found that the positions of the maxima of these functions are characteristic features of a gas, providing a good criterion for the selective detection of inflammable or poisonous gases. The potential application of sensor signal deconvolution with Gaussian functions for quantitative analysis of two-component gas mixtures and its limitations are demonstrated.
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