Latest Progress in Sensors for Pre-explosive Detection of Flammable Gases: A Review

Baranov, Alexander; Osipova, T. V.

doi:10.18494/sam4005

Cited by 2 publications

(1 citation statement)

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“…This fact reduces the energy consumption of the sensor and makes it possible to create gas analyzers with long-term autonomous power supply, which is a trend in flammable sensors. (24) The results can be used for the ignition of hydrogen and hydrogen-hydrocarbon air mixtures in a related field where these mixtures are used for fuel-catalytic ignition. (14) Catalytic ignition does not require electrodes and the ignition system, so there is no erosion of the electrodes while the operation time of the catalytic ignition system will be significantly longer than that of a device using a conventional spark plug.…”

Section: Discussionmentioning

confidence: 99%

Development of an Approach to Increase Hydrogen Measurement Selectivity

Ivanov¹,

Баранов²,

Миронов³

et al. 2023

Sensors and Materials

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Hydrogen monitoring in industrial premises, when other gases are also present in air, is an urgent task. For safety reasons, it is necessary that a hydrogen sensor provides measurements at the lowest possible temperature. In this paper, we propose an approach to the selective measurement of the concentration of hydrogen, which is part of multicomponent hydrocarbon mixtures. Binary and ternary mixtures of hydrogen with methane, propane, and butane were used in this study. The traditional method is based on measuring the catalytic sensor response, and a new method that is based on measuring the amount of heat released during hydrogen combustion was used to solve the problem of selectivity. An industrial catalytic sensor was used for the measurements. It was shown that for the selective measurement of hydrogen in hydrocarbon mixtures, it is necessary to reduce the sensor temperature below 200 ℃. Measurements of hydrogen concentration and a comparison of results were carried out at 105 ℃. Such a low operating temperature is an excellent result for a catalytic sensor. It is shown that the method based on measuring the amount of heat released during hydrogen combustion is more accurate than the traditional method, and the average error was 7.7%.

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Section: Discussionmentioning

confidence: 99%