AGA 8 Setup page

Section 5: Startup and meter configuration

Reference, Installation, and Operations Manual

June 2013

3-9000-743 Rev S

 

 

1.From the Field Setup Wizard - AGA 8 Page, choose the desired settings:•AGA8 calculations to be performed:—Internally (by meter)—Base temperature—Base pressure—Base absolute pressure—Externally—Fixed—LiveTable 5-20 Field Setup Wizard - AGA 8 Setup
AGA8 methodConfiguration Parameters

 

 

Gross Method 1

Specific gravity: Relative density; used as input to the AGA8 Gross Methods 1 and 2 calculations

 

• Reference temperature - for the specific gravity

 

• Reference pressure - for specific gravity

 

• CO2 - Mole percentage CO2 in the natural gas mixture

 

• Hydrogen - Mole percentage of hydrogen

 

• CO - Mole percentage of carbon monoxide

 

Volumetric gross heating

 

• Molar density ref temperature: Reference temperature for the molar density; used as

 

input to the AGA8 Gross Method 1 calculation

 

• Molar density ref pressure: Reference pressure for the molar density; used as input to the

 

AGA8 Gross Method 1 calculation

 

 

Gross Method 2

Specific gravity: Relative density; used as input to the AGA8 Gross Methods 1 and 2 calculations

 

• Reference temperature - for the specific gravity

 

• Reference pressure - for the specific gravity

 

• CO2 - Mole percentage CO2 in the natural gas mixture

 

• Hydrogen - Mole percentage of hydrogen

 

• CO - Mole percentage of carbon monoxide

 

• Nitrogen - Mole percentage of nitrogen in the natural gas mixture (AGA8 Gross Method 2

 

calculation)

 

 

AGA8 method

Configuration Parameters

 

 

Detail

Enter the amount of each of the 21 gas components as a percentage.

 

This option is only available in Mark III meters

 

• Gas composition - Select either the Fixed or Live GC.

 

– Fixed: Select this option to use the fixed gas composition stored in the meter for all

 

 

calculations for which they are required.

 

– Live GC: Select this option to use a gas composition collected by the meter from a

 

 

gas chromatograph for all calculations for which they are required. This option is

 

 

only available for Mark III meters with a valid GCKey

 

 

Externally

• Select if AGA8 calculations are done externally. The calculated values must then be

 

written to the meter using Daniel MeterLink or a flow computer. The following properties

 

must be entered. If a flow computer or SCADA system is used to write these values to the

 

meter, they do not have to be entered at this time.

 

–

Flow mass density

 

–

Flow compressibility

 

–

Base compressibility

 

 

 

Note: Mark II meters - Externally calculating the AGA8 calculations is only available for DFI boards running version 3.40 or later

firmware.

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