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Title: The Effect Of Flow Conditioners On The Performance Of Multi-Path Ultrasonic Flowmeters
Author: Bobbie Griffith, Terry Cousins, Don Augenstein
Source: Flomeko 2005
Year Published: 2005
Abstract: The paper describes the performance of Caldon Ultrasonic flowmeters in the presence of different design flow conditioners and straighteners. Tests were conducted with the conditioners at different positions upstream of the meter. The results are compared to the calibration of the meter with a fully developed flow profile one expects in straight pipe. The data collected for the comparison included the repeatability, linearity and shift in the meter factor from that with straight pipe. There has been anecdotal evidence that the presence of conditioners and straighteners impairs the repeatability of ultrasonic flowmeters (UFMs), and hence provability. This paper presents experimental data demonstrating the effect in practice. The paper includes discussion and recommendations with regard to the merits and de-merits of using flow conditioners with multi-path UFMs.

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