The Contrec 515 GN02 is a reliable solution for measuring the volume, mass, and total heat content of natural gas. It uses analog inputs for volume flow, temperature, and pressure to provide accurate readings.
You can choose the Flowmeter input signal as either 0-5V, 1-5V, or 4-20mA. You can also set minimum and maximum points, and apply non-linear correction points to better match the flowmeter’s performance.
To ensure precise calculations, the AGA-8 Detail Characterization Method is utilized. This method helps in determining accurate density and compressibility factors for gas flow calculations.
CALCULATIONS
The calculations for gas density and compressibility factors are based on the AGA-8 equations. These calculations are applicable within the following ranges:
-130°C < t < 400°C and P < 280MPa
-200°F < t < 760°F and P < 40000psia
FORMULAS
Mflow = volumeflow • ρflow
Corrected flow = Mflow / ρ ref
Heat flow = Mflow • Hm
Where:
Mflow = mass flow
ρflow = density at flow conditions
ρ ref = density at reference conditions
Hm = mass gross heating value
