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Title: FUNDAMENTALS OF MULTIPATH ULTRASONIC FLOW METERS FOR GAS MEASUREMENT
Author: Jim Bowen
Source: 2019 American School of Gas Measurement Technology
Year Published: 2019
Abstract: Over the past 30 years, gas ultrasonic meters have transitioned from the engineering lab to wide commercial use as the primary device of choice to measure gas volume for fiscal accounting. Wide acceptance and use by gas pipeline companies has occurred during this time due to the devices Reliability Accuracy Repeatability Capacity (rangeability) Commercial availability that translates into product support, and Adoption of industry standards for fiscal measurement applications Briefly, the historical development of fluid velocity measurement in closed conduits with sonic pulses was first considered in the 1920s with the discovery that transmission and reception of repetitive sound bursts could be used to describe the location and speed of moving objects this principle was soon used to build sonar and radar arrays. Attempts were made over the years to apply the principle to measurement of fluid velocity in conduits, but it wasnt until the development of economical high speed electronics and digital signal processing in the late 1970s that a repeatable instrument with sufficient resolution for gas applications was devised.

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