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Natural Gas Volume Correction

ProtoLink developed a Windows application to provide a user interface to a Volume Correction Computer (VCC).  This application communicates with the microprocessor-based gas flow meter using the Modbus protocol over a direct serial link to perform calibration, real-time data monitoring, configuration management, and historical report generation.  Over sixty dialog boxes exist within the application to facilitate user control of these functions.  Access to these dialogs is controlled by a multi-level user authentication scheme.  Due to a requirement to support multiple hardware options, many of the dialogs are dynamically altered at run-time.  Because of the large number of configuration dialogs, ProtoLink devised an "Advanced Configuration" screen containing an alphabetized list of all modifiable parameters.  Double-clicking on an individual parameter launches the appropriate dialog box for editing that parameter.

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