A5.4 - Rapid Characterisation of Mixtures of Hydrogen and Natural Gas by Means of Ultrasonic Time-Delay Estimation
- Event
- SMSI 2023
2023-05-08 - 2023-05-11
Nürnberg - Band
- Lectures
- Chapter
- A5 - Hydrogen Sensing
- Author(s)
- J. Monsalve, J. Amelung, B. Betz, S. Koch, C. Ruffert, U. Völz, M. Jongmanns - Fraunhofer IPMS, Dresden (Germany), M. Wiersig - DBI Freiberg, Freiberg (Germany)
- Pages
- 67 - 68
- DOI
- 10.5162/SMSI2023/A5.4
- ISBN
- 978-3-9819376-8-8
- Price
- free
Abstract
In this work we present a possible application of ultrasonic time-delay estimation to characterise mixtures of natural gas and hydrogen by the speed of sound. We constructed two prototypes based on two variants of micromachined ultrasonic transducers, both out-of-plane (CMUT) and in-plane (L-CMUT), operating at different frequencies (1.6 MHz and 40 kHz respectively). A calibration of these devices under controlled conditions will enable their assessment as potential hydrogen-sensitive gas counters.