Process Displays
AGA8DL & AGA8GS
AGA8 Gross Setup
96
900 Control Station User Guide
Revision 9
May 2014
AGA8 Gross Setup
Accessed from the AGA8 Gross widget, this display shows the values of the 4 gas components and other
setup parameters. You can edit the local values here.
Item
Description
Active Gas Component
Values
Local values: Uses Local Values of gas components.
Remote values: Uses the block’s Remote Values (input pin values from an online
analyzer).
Override Range Error
Under certain situations, the gas component values may exceed the expanded range
recommended by the AGA 8 Report. In Override mode a flow rate will be calculated. It
should be noted that calculated flow rates for conditions where the expanded range is
exceeded are outside of the recommended uncertainty values for AGA 8 calculations.
Gross Method Used
Method 1 calculates the super-compressibility and gas density from knowledge of the
relative density, heating value and carbon dioxide, hydrogen and carbon monoxide
components.
Method 2 calculates the super-compressibility and gas density from knowledge of the
relative density, Nitrogen, carbon dioxide, hydrogen and carbon monoxide
components.
Setup for Method 1&2
Relative Density
Gas Relative Density
Relative Density Ref
Temperature
Relative density reference temperature in units selected by the UNITS configuration
parameter.
Relative Density Ref
Pressure
Relative density reference pressure in units selected by the UNITS configuration
parameter.
Setup for Method 1 Only
Heating Value
Heating value in units selected by the UNITS configuration parameter.
Calorimeter Ref Temp
Calorimeter reference temperature in units selected by the UNITS configuration
parameter.
Calorimeter Ref Pres
Calorimeter reference pressure in units selected by the UNITS configuration
parameter.
Combustion Ref Temp
Combustion reference temperature in units selected by the UNITS configuration
parameter.
continued