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Title: Real Time Measurement System Design And Operational Considerations
Author: Brian J. Mcconaghy
Source: 1986 International Symposium on Fluid Flow Measurement
Year Published: 1986
Abstract: The use of micro-processors in conjunction with electronic inputs for the purpose of performing on-site volume and energy calculations, is gaining popularity in Canada and the United States. The incorporation of computer based, on-site metering for purposes of natural gas custody transfer measurement has been a relatively slow process in North America due to the established chart based systems and the age and size of the gas transmission and utility systems. Acceptance of this technology has been further hampered by the broad familiarity and acceptability of conventional chart metering and the lack of trend and audit data available from standard flow computer systems. In confronting this situation NOVA, AN ALBERTA CORPORATION combined innovative engineering, practical experience, and available technology to develop a real time measurement system which provides significant benefits over chart recorder devices and off-the-shelf flow computers. A sequel to the measurement system is the extensive operating experience gained in the installation, calibration and maintenance of electronic natural gas measurement equipment. This experience has identified specific areas of operating concern and resulted in testing of several electronic static and differential pressure transmitters. Tests have included effects of high pressure calibration, temperature, and process fluid effects on transmitter accuracy. This operating experience and testing has provided the knowledge necessary to establish effective selection, installation, calibration, and maintenance procedures.

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