MOSFET-based gas sensors for process industry IoT applications

In this study, the performance of MOSFET CO and NOx sensors for their applicability in on-line monitoring of flue gas composition and the automatic control of combustion for individual gas burners, producing heat to an industrial process, has been evaluated. In comparing the readings from pre-calibrated sensors with the concentrations measured by a commercially available flue gas analysis instrument and an oxygen sensor, promising sensor characteristics were obtained for the in-situ flue gas CO and NOx level monitoring, suggesting their possible applicability in automatic, self-adapting industrial process control and future related Industrial IoT applications.