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Title: MULTIPATH ULTRASONIC METERS FOR CUSTODY TRANSFER OF NATURAL GAS
Author: Duane Harris
Source: 2022 Appalachian Gas Measurement Short Course
Year Published: 2022
Abstract: Over the past 30 years, gas ultrasonic meters have tran- sitioned from the engineering lab to wide commercial use as the primary device of choice to measure gas volume for custody transfer 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 sup- port, and Adoption of industry standards for custody transfer mea- surement applications Briefly, the historical development of fluid velocity mea- surement in closed conduits with sonic pulses was first considered in the 1920s with the discovery that trans- mission 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 ap- ply the principle to measurement of fluid velocity in con- duits, but it wasnt until the development of economical high-speed electronics and digital signal processing in the late 1970s that a repeatable instrument with suffi- cient resolution for gas measurement applications was devised.

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