Configuring - Gas Meter Compensation

This configuration can be done at the template or individual Element level. The example procedure shown below is done at the template level.

1. In the System Explorer navigation pane, click on Library.

2. From the Templates > Element Templates tree, select the gas meter template (i.e., SF_GasMeterTemplate).

3. Click on the Attribute Templates tab.

4. In the Name column, select the Attribute for the standard flow (i.e., i4_Meas_Volume).

5. Click on the Data Reference down-arrow and select Sigmafine.

6. Click the Settings button to open the Sigmafine Data Reference window.

7. Under Calculation Category select Meters.

8. Click Next.

   The Meters window opens.

9. Select Gas Meter Compensation.

10. Click Next.

    The Gas Meter Compensation window opens.

11. Using the following Flow Conditions table, select the Attributes for Flow Conditions.

12. Using the following Meter Design Data table, enter/select the Attributes for Meter Design Data.

    Note: The Material Attribute for Flow Conditions is the material specified in the flow to which the liquid meter is attached to, not the one specified in the meter.

    Flow Conditions

    Input Box / Button	Description
    Actual Volumetric Flow Calculated at Design Conditions	Select attribute; units of Gas Actual Volume
    Pressure at Flowing Conditions	Select attribute; units of pressure.
    Temperature at Flowing Conditions	Select attribute; units of temperature.
    Compressibility (z) at Flowing Conditions	Select attribute. Attribute can have no units.
    (actual) Molecular Weight	Select attribute; units of molecular weight.
    Flowing Gas Compressibility (z) at Reference Conditions)	Select attribute; Attribute can have no units.

    Meter Design Data

    Input Box / Button	Description
    Design Flowing Temperature	Enter meter design flowing temperature in the selected unit of temperature.
    Design Molecular Weight	Enter gas molecular weight for the meter design in the selected unit of molecular weight.
    Design Flowing Pressure	Enter meter design flowing pressure in the selected unit of pressure.
    Design Compressibility (z)	Enter meter design compressibility. Value has no units.
    Design Gas Compressibility (z) at Reference Conditions	Enter meter design compressibility at reference conditions. Value has no units.

13. When finished, click Finish to complete the configuration.

The following sample displays the configuration in the System Explorer window.