Depending on the system setup, a Realflo-enabled SCADAPack controller can provide one of two industry-standard gas compressibility calculations:
- AGA-8—A detailed gas compressibility calculation. This is the recommended calculation for systems that can support this type.
- NX-19—A gas compressibility calculation for use on older applications that do not support AGA-8 calculations.
The Type of calculation that a Flow Run performs is read into Geo SCADA Expert when the server establishes communications with the controller on which the Flow Run is located. You can also specify the calculation Type manually, if required. For example, if a Flow Run’s data is to be used on report(s), and you want to configure those reports to include the relevant data fields, before Geo SCADA Expert establishes communications with the controller on which the Flow Run is located.
The Type field at the top of the Compressibility Calculation tab indicates the type of compressibility calculation that a Flow Run performs.
The type of calculation that a Flow Run performs determines the fields that are displayed on the rest of the tab.
If the Compressibility Calculation Type is NX-19, the tab displays fields that show the General NX-19 Calculation Properties.
If the Compressibility Calculation Type is AGA-8, the tab displays fields that show the:
- General AGA-8 Calculation Properties
- AGA-8 Gas Composition Properties
- AGA-8 Hexane Properties
- AGA-8 Relative Density and Heating Value Properties.
Further Information
For more detailed information on these properties, see the documentation provided with the Realflo application.