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Title: Custody Transfer Accuracy of an 8-Path Ultrasonic Flow Meter with 5D Upstream Straight Run
Author: Nicholas J. Mollo
Source: 2018 North American Custody Transfer Measurement Conference
Year Published: 2018
Abstract: Calibration of ultrasonic flow meters for custody transfer service is already a tricky business. The need for compact metering skids used in offshore applications where foot print is critical, and land based applications where cost is important, require meter installations that can tolerate the reduced straight inlet lengths. Meters utilizing multiple, cross -plane, measurement paths to cancel swirl effects is a common practice. Opposing tangential velocity vectors are automatically subtracted from each other. Is a long, straight pipe, calibration of such a flow meter sufficient to provide custody transfer level accuracy in disturbed, short length inlet installations?


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