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Title: Proving Liquid Ultrasonic Flow Meters
Author: Don Augenstein
Source: 2008 International School of Hydrocarbon Measurement
Year Published: 2008
Abstract: Ultrasonic transit-time flow meter (UFM) technology is now well over 50 years old. UFM improvements in transducer design, signal processing and more importantly, the understanding of factors that influence the performance of these meters have greatly improved these meters performance. Current UFMs achieve accuracy and reliability comparable to or better than older mechanical technologies (i.e., turbine and positive displacement meters) and are now challenging these traditional flow meters in hydrocarbon measurement applications. This transition is being driven by a number of UFM attributes including: High accuracy and high turndown ratio Availability of large size meters Non-intrusiveness Low maintenance costs Information on flow characteristics and fluid properties Excellent on-line diagnostics Applicability for extreme environments (from cryogenics of -170C to heated fluids +250C)

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