Apparatus for Imposing and Measuring Rapid Pressure Changes in Gases
- 1 March 1952
- journal article
- research article
- Published by AIP Publishing in Review of Scientific Instruments
- Vol. 23 (3), 115-118
- https://doi.org/10.1063/1.1746197
Abstract
A simple apparatus is described in which rapid volume changes can be imposed on a small reaction vessel by means of a bellows and cam arrangement. Thus pressure increments of the order of 10 mm Hg can be induced in about 2 milliseconds. The pressure changes during the expansion or compression, and the subsequent adjustment to equilibrium in case the vessel is filled with a dissociating gas is followed by a Massa Sound pick‐up (piezoelectric unit). The sensitivity of the apparatus is such that a Δp=6.7 mm gives an inch deflection on the oscilloscope. Limitations of the present design, and possible improvements for increased stability and sensitivity are discussed.Keywords
This publication has 1 reference indexed in Scilit:
- A Working Standard for Sound Pressure MeasurementsThe Journal of the Acoustical Society of America, 1945