Abstract
AbstractThis paper presents a guide to acoustic thermometry in gases using pulse techniques. The dependence of the measured acoustic velocity on gas properties, temperature, pressure and flow is described. These relationships are used to assess the characteristics of the thermometer, and the basic arrangement of the thermometer is described. The performance of the thermometer is dependent on the transmission characteristics of the gas; these are described together with the effect they have on pulse timing. The Stirling engine application is used to illustrate the above and other possible applications are briefly discussed.
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