A prototype acoustic gas sensor based on attenuation

Andi Petculescu*, Brian Hall, Robert Fraenzle, Scott Phillips, Richard M. Lueptow

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

36 Scopus citations

Abstract

Acoustic attenuation provides the potential to identify and quantify gases in a mixture. We present results for a prototype attenuation gas sensor for binary gas mixtures. Tests are performed in a pressurized test cell between 0.2 and 32 atm to accommodate the main molecular relaxation processes. Attenuation measurements using the 215-kHz sensor and a multiseparation, multifrequency research system both generally match theoretical predictions for mixtures of CO 2 and CH 4 with 2% air. As the pressure in the test cell increases, the standard deviation of sensor measurements typically decreases as a result of the larger gas acoustic impedance.

Original languageEnglish (US)
Pages (from-to)1779-1782
Number of pages4
Journaljournal of the Acoustical Society of America
Volume120
Issue number4
DOIs
StatePublished - Oct 16 2006

ASJC Scopus subject areas

  • Arts and Humanities (miscellaneous)
  • Acoustics and Ultrasonics

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