User manual

Toolbox 32 User Manual 1.47d www.cse-semaphore.com/mykingfisher
Page
94
Ladder Logic - AGA-8
AGA-8 Gas Compressibility (Gross calculation)
Uses the American Gas Association standard AGA-8 for calculating gas compressibility. Requires driver
AGA8.Dxx.
Comment: A 12-character description.
Temperature (deg C): (Float) Gas temperature.
Pressure (MPa): (Float) Gas pressure.
Mole Fraction N2: (Float) Mole fraction of Nitrogen in the gas mixture.
Mole Fraction CO2: (Float) Mole fraction of Carbon Dioxide in the gas mixture.
Specific Gravity: (Float) Specific gravity (relative density) of the gas mixture.
Ref. Temperature (deg C): (Float) Reference temperature.
Ref. Pressure (MPa): (Float) Reference pressure.
Compressibility: (Float) AGA-8 compressibility factor of the gas.
Status: (Local register) AGA-8 calculation status. The following channels are used:
• Ch 1: calculation error
• Ch 2: pressure out of range error (allowed range is 0 to 12 MPa)
• Ch 3: temperature out of range error (allowed range is -8 to 62
o
C)