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For many decades, ultrasonic flowmetering has been used for liquids. From the mid seventies, the principle of transit time has been more and more successfully tested for various purposes in the metering of gas, e.g. flare gas metering, domestic gas flowmetering, and even fiscal and custody measurements of gas.This book unifies the basic principles, design, tests and installation effects in a self contained pedagogical unit with "hands-on" problems for the students as well as the professional. The book contains solved problems and end-of- chapter problems. The enclosed diskette provides a number of MATLAB programs to work with along with the text.

Ultrasonic Gas Flowmeters

From the contents:
Background and Scope: Ultrasonic Gas Flowmeters (UGF); General Principles and Measurements; Ultrasonic Transducers - Design and Construction; Transit Time Measurements; Signal Processing Techniques; Flow in Pipes; Ultrasonic Propagation in Gas Glow; Calculation of Volume Flow; Calculation of Mass Flow; Flow Computers; Multi Task UGFs - New Developments; Uncertainties; Calibration; Some Practical Installations and Case Studies; Methods of Evaluating the Performance of UGFs; References; Appendices