An Acoustothermic Hydrogen Sensor
- Авторы: Anisimkin V.1, Kuznetsova A.1
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Учреждения:
- Kotel’nikov Institute of Radio Engineering and Electronics
- Выпуск: Том 62, № 12 (2017)
- Страницы: 1431-1433
- Раздел: Novel Radio Systems and Elements
- URL: https://journals.rcsi.science/1064-2269/article/view/199078
- DOI: https://doi.org/10.1134/S1064226917120026
- ID: 199078
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Аннотация
It has been revealed in experiments that, based on the thermal influence of gases on the surface acoustic wave propagating in a hot acoustic transmission line, it is possible to efficiently detection hydrogen without using gas-sensible coatings. It order to increase the sensitivity, the acoustic transmission line of the sensor is made of a piezoelectric crystal of В12SiO20 with large temperature coefficient of delay and the total phase shift and delay of the wave between radiating and receiving transducers are increased owing to propagation of this wave through two cylindrical roundings. When concentrations are in a range of 0.1–3.2%, the acoustothermic response to hydrogen by an order of magnitude exceeds responses to O2, CH4, NO, and water vapor of the same concentrations. Owing to the absence of a gas-sensible coating, the long-term stability of detection is high and is less than ±2% during six months.
Об авторах
V. Anisimkin
Kotel’nikov Institute of Radio Engineering and Electronics
Автор, ответственный за переписку.
Email: anis@cplire.ru
Россия, Moscow, 125009
A. Kuznetsova
Kotel’nikov Institute of Radio Engineering and Electronics
Email: anis@cplire.ru
Россия, Moscow, 125009