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Title: Ultrasonic Domestic Gas Meters - A Review
Author: N. Bignell
Source: Flomeko 2000
Year Published: 2000
Abstract: There are many designs of ultrasonic domestic gas meters but all the main ones use the measurement of the transit time of an ultrasonic signal through the flowing gas to estimate its velocity. The shape of the duct and devices to control the waveform of the signal passing through it are significant parts of the design. The transducers used to produce the signal, reciprocal operation and the main techniques to time the transit of the signal to several nanoseconds are discussed. The acceptance of these meters has been restricted and their possible future is discussed.

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