Realflo Flow Computer

Multi-run flow computer software for gas & liquids
Published by Schneider Electric


  • New Features with 7.10.2
  • Run-time flow measurement app
  • Easy-to-use flow computer configuration interface
  • Gas measurement
  • Liquids measurement
  • Industry-specific protocol support

New Features with 7.10.2

  • Realflo 7.10.2 introduces support for 20 flow runs using a single SCADAPack x70 Smart RTU. The 20 flow runs can be of any type – gas, liquid, and/or water, as many wells use 3 runs of gas, liquid, and water.
  • Realflo 7.10.2 also includes enhanced to security features which can help to enable compliance with the United States TSA pipeline directive part II.
  • Realflo Flow Computer can now use AGA-8 (2017) Detail and AGA-8 (2017) GERG-2008 to measure pure gases including Hydrogen, Oxygen, and Carbon Dioxide.
  • Realflo 7.10.2 also adds driver support for the E+H Promass 300 Coriolis meter and CSV log file export support for liquid flow runs.
  • Logging of M (Meter) Factor and K Factor can be suppressed for AGA-7 and AGA-9 configuration commands. This reduces the number of logged changes when frequent updates are made to the factors.

Run-time flow measurement app

Realflo provides a configurable run-time application that adds gas and/or liquids flow computation to standard SCADAPack Smart RTUs. This C/C++ application runs independently of any RTU control logic in the SCADAPack.

Easy-to-use flow computer configuration interface

The Realflo configuration software application provides configuration wizards to guide operator entry and facilitate creation of configuration templates. User-created templates allow for rapid installation of multiple sites with common configurations by pre-configuration of the common settings. Installers can then concentrate on the site-specific configurations. This approach speeds up configuration and helps to reduce user-configuration errors.

Gas measurement

Realflo Flow Computer provides:
  • AGA-3 orifice plate
  • AGA-7 turbine/pulse meter flow measurement
  • V-Cone
  • Wafer Cone
  • AGA-11 Coriolis, with AGA-8 detailed compressibility calculations.
  • Liquids measurement

    Realflo Flow Computer utilizes API 11.x calculations for CTL and CPL (temperature and pressure compensation). NOC (Net Oil Computation) is computed for liquid runs on 2 or 3-phase separators or direct well production measurement. Net oil and water is established using inferred water cut with Coriolis meters, or using direct measurement with on-line water cut meters.

    Industry-specific protocol support

    The Realflo Flow Computer supports Modbus™ protocol and EFM (Enron) Modbus protocol. These industry-standard protocols provide communication to many SCADA host systems, including EcoStruxure™ Geo SCADA Expert (ClearSCADA™), OASyS® from Schneider Electric, and Wonderware® ArchestrA® from Aveva Software.
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