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Title: Flow Disturbances And Flow Conditioners: The Effect On Multi-Beam Ultrasonic Flowmeters
Author: Jankees Hogendoorn, Andre Boer, Dick Laan
Source: 2005 North Sea Flow Measurement Workshop
Year Published: 2005
Abstract: Over the past years a lot of experience with the five beam ultrasonic flowmeters on fiscal applications has been obtained 1, 2, 3. Ultrasonic flowmeters have gained full acceptance and customers are using the five beam ultrasonic flowmeters in a growing number of fiscal transfer metering applications worldwide. More recently, three path ultrasonic flowmeters have been introduced for custody transfer applications 4. The success of ultrasonic flowmeters can be attributed to their inherent benefits: no moving parts, no wear, low pressure drop, wide rangeability and minimal maintenance. Many National Weights and Measures Authorities worldwide have approved the use of ultrasonic flowmeters for fiscal metering. An important step forward in the acceptance of ultrasonic flowmeters is the release of a standard by the American Petroleum Institute (API) Measurement of Liquid Hydrocarbons by Ultrasonic Flow Meters in February 2005 5,6. Now that custody transfer flow measurement with multi path ultrasonic flow meters are increasingly accepted in the market, further development has been focussed on increasing robustness of installation and on simplifying calibration, commissioning and operating procedures. We have found that proper flow conditioning is an essential part of this development.

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