Tank object: Design Info tab

Import Measurement Point

These properties appear in the Import Measurement Point frame of the Design Info tab.

• Import Measurement Point: Selects the tag name for the plant historian tag that contains the level or volume for the tank.

  • Tag Name: Selects the tag name for the plant historian tag that contains the amount of flow for this stream. This can be left blank if appropriate, for instance, when the flow is filled in from transactional data from a movement logging system. You can select an existing tag in two ways: (1) Use the Tag Name combobox, or (2) Click the command button to the right which brings up the Tag Information dialog box, on which you can select a tag.

  • Tag Eng. Unit: Allows you to select an engineering unit different than the default for the selected tag. Whenever you select a tag (including changing the selected tag), the engineering unit is set to the one defined for that tag. But after selecting the tag, you are free to change the engineering unit.

Export Measurement Point

These properties appear in the Export Measurement Point frame of the Design Info tab.

• Export Measurement Point: Selects the tag name that contains the amount of reconciled volume for this stream to write the plant historian.

  • Tag Name: Selects the tag name for the plant historian tag that contains the amount of flow for this stream. This can be left blank if appropriate, for instance, when the flow is filled in from transactional data from a movement logging system. You can select an existing tag in two ways: (1) Use the Tag Name combobox, or (2) Click the command button to the right which brings up the Tag Information dialog box, on which you can select a tag.

  • Tag Eng. Unit: Allows you to select an engineering unit different than the default for the selected tag. Whenever you select a tag (including changing the selected tag), the engineering unit is set to the one defined for that tag. But after selecting the tag, you are free to change the engineering unit.

Other properties

• Use Tag for Only Intermediate Tank Inventory Cutting: Use the tag value for intermediate tank inventory when Use Intermediate Tank Inventory Cutting (ITIC) in DR Solver option is checked. If this option is checked, AVEVA Production Accounting imports the inventory from the tag for both the existing tank inventory event and the intermediate tank inventory event.

• Measured: This checkbox lets you define whether or not the object is measured. If checked, this object is a measured one. If unchecked, this object is an unmeasured one. The effect of performing data reconciliation differs for measured versus unmeasured objects. Reconciliation calculates the flow rate of an unmeasured object, but it corrects (reconciles) the flow rate of a measured object. Usually, selecting this box affects only future reconciliations. If you want to apply this setting to all event data (for all previous periods), click the command button next to this checkbox. This kind of alteration of previous events is typically most useful during commissioning.

• No Density Conversion: When the balance type is both (mass and volume), AVEVA Production Accounting takes a mass balance with measured data and then decides reconciled mass flowrate of each object. And then conversed volume flowrate is calculated with reconciled mass flowrate and density which is calculated by measured mass and volume flowrate. AVEVA Production Accounting generally takes a volume balance with this conversed volume flowrate. However, if this option is selected, AVEVA Production Accounting takes a volume balance with measured volume flowrate to checked object instead of conversed volume flowrate.

• Product Code: Selects the product name of this object. You can choose from existing product codes in two ways: (1) Click the associated combobox, or (2) Click the associated command button , which calls up the Edit Product Information dialog box, on which you can select a product. Usually, changing the product code will affect only future reconciliations. If you want to apply the changed product code to all event data (for all previous periods), click the command button next to this checkbox. This type of alteration of previous events is normally most useful during commissioning.

• Product Group: Permits selection of the product group of this tank object.