Study of the transit time of pressure propagation in an acoustic delay line

Yunn Fang Song, Ching Iue Chen, Chu Nan Chang, Jean Luh You, Fu Kwun Hwang, Chih Ying Hsu

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A fast sensor was used as a vacuum gauge to measure the transit time of a gas pressure through an acoustic delay line (ADL). The results were compared with the predictions of two theoretical models. We found that in the rupture pressure range of 101 to 104 Pa, the predictions of Jean and Rauss' model, based on the assumption that the flow of gas be a gas fluid, set lower boundaries for the observed transit times; while the predictions of our model, based on the molecular motion, set the upper ones.

Original languageEnglish
Pages (from-to)3063-3065
Number of pages3
JournalReview of Scientific Instruments
Issue number12
Publication statusPublished - 1986 Dec 1


ASJC Scopus subject areas

  • Instrumentation

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