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A calibration algorithm and an algorithm for measuring the concentrations of volatile hydrocarbons in atmospheric air using Fourier transforms for semiconductor gas sensors have been developed. This work presents experimental data on sensor calibrations obtained on certified equipment using gasoline, solvent vapor, toluene, and methane as an example. The calibration carried out by recording measurements of the electrical conductivity of the gas-sensitive layer of the sensor over time, both during heating and cooling samples of sensors based on samarium sulfides and other composite materials. The method of semiconductor gas Fourier spectroscopy that we are developing, the construction principles of which are described in recent publications, is based on the relationship of the obtained calibration characteristics of the sensors of volatile hydrocarbons concentration contained in atmospheric air, with the electrophysical characteristics of samarium sulfide based rare earth semiconductors used as gas sensitive layers.

journal of physics. conference series

Calibration algorithm for semiconductor gas sensors and determination of volatile hydrocarbon concentrations in atmospheric air using Fourier transforms