Model FT3 thermal mass flow meters are among one manufacturer's broad technology range to measure gas flow rate. It is shown here in Colorado at a remote configuration on the fuel line to multiple combustors.
Thermal mass flow technology is said to be fundamentally more accurate than volumetric flow measurement. Mass is unaffected by changes in process pressure and temperature.
Fox Flow Meters measure gas flow directly in mass units including scfm, Nm3/hr, lbs/hr, or Kg/Hr. Pressure and temperature compensation is not required.
Besides natural gas gathering/processing applications, FT3 is applicable to refining and petrochemical processing/manufacturing.