Patent ID: 9207108
Filing Date: 2015-12-08
Classification: G01F

Abstract:
1. A meter controller comprising: a first input configured to receive a thermal dispersion flow measurement from a corresponding thermal dispersion flow meter, the thermal dispersion flow measurement including at least one thermal energy value; a second input configured to receive a turbine meter flow measurement from a corresponding turbine flow meter in series with the thermal dispersion flow meter, the turbine meter flow measurement including at least one volumetric flow rate measurement; and a processor configured to receive the thermal dispersion flow measurement and the turbine meter flow measurement, calculate a first volumetric flow rate based on the thermal dispersion flow measurement and an initial fluid density value, directly calculate a second volumetric flow rate based on the turbine meter flow rate measurement, and calculate a quasi fluid density value required to cause the first volumetric flow measurement to equal the second volumetric flow measurement, the processor further configured to subtract the initial density value from the quasi fluid density value for calculating a density correction factor (Δρ); wherein the density correction factor (Δρ) is subtracted from the initial fluid density value to calculate a corrected density value, the corrected density value applied to the second volumetric flow measurement for calculating a mass flow rate measurement based on the turbine meter flow measurement.