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Title: Smart Ultrasonic Meter
Author: Angela Floyd, Klaus Zanker, Mike Whelan
Source: 2008 South East Asia Flow Measurement Conference
Year Published: 2008
Abstract: As more multi-path ultrasonic meters are being incorporated into systems designed for the custody transfer of natural gas, the scrutiny of their performance capabilities has increased. As the meters have no moving parts, are fully electronic and require a power source to work, the ability to quantify and identify causes and extent of inaccuracy have been dependent of the manufacturers development of electronic diagnostic software. In addition, the majority of the meters are 8 and above and were built with the thought that no recalibration would be necessary. They are therefore expensive to remove from the line for inspection and sending to an independent lab for re-calibration. Manufacturers have been more sensitive to these needs in recent years and have developed sophisticated diagnostic parameters which, with extensive training, the field should be able to identify system or meter problems via a modem or Ethernet connection. As each manufacturer invests in a competitive edge, the extent and complexity of these diagnostics has increased. Therefore, field use of more than one model of meter requires extensive training and knowledge for the field technician or the office measurement engineer who may be challenged with the quest of understanding what the reams of diagnostic data really means. It was with this task and the unanimous agreement from the industry users that a PRCI project was proposed and supported. The title of SMART meter indicated the ultimate goal that the diagnostic data would in fact indicate whether the meter was working correctly or if the system was affecting the meter and to what extent the accuracy was affected. It also charged the resultant diagnostics with identifying which facet of the meter or the related installation was affecting the measurement accuracy.

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