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Title: UNDERSTANDING GAS ULTRASONIC METER DIAGNOSTICS-ADVANCED
Author: John Lansing
Source: 2017 Appalachian Gas Measurement Short Course
Year Published: 2017
Abstract: This paper discusses advanced diagnostic features of gas ultrasonic meters (USMs), and how capabilities built into todays electronics can identify problems that may have gone undetected in the past. It primarily discusses fiscalquality, multipath USMs and does not cover issues that may be different with non-fiscal meters as they are often single path designs. Although USMs basically work the same, the diagnostics for each manufacturer does vary. All brands provide basic features as discussed in AGA 9 Ref 1. However, some provide more advanced features that can be used to help identify issues such as blocked flow conditioners, liquids, and gas compositional errors. This paper focuses on the Westinghouse and British Gas configurations (both being four-path chordal designs) and the information presented here may or may not be applicable to other path designs.