View information using the Virtual Flow Computer Control window

Name

The name of the VFC.

Description

The description of the VFC.

Current Status

The status of the VFC.

This provides an indication of whether the VFC is in an alarming, stale, or an error state, or in simulation mode.

Inhibit

Indicates whether or not the virtualflowcomputer record is currently being processed.

Product Type

The product type of the ticket.

Dens Units

Units of density measurement (for example, American Petroleum Institute [API] gravity). The units are defined by the unit profile.

Pres Units

Units of pressure measurement (for example, pound per square inch). The units are defined by the unit profile.

Temp Units

Units of temperature measurement (for example, degree Fahrenheit). The units are defined by the unit profile.

Vol Units

Units of volume measurement. The units are defined by the unit profile.

GSV

The Gross Standard Volume (GSV) the ticket has recorded.

NSV

The Net Standard Volume (NSV).

This value is equal to the GSV with sediment and water volume removed.

CSW

Correction factor for the presence of sediment and water in crude oil.

This value is never greater than 1.0000.

Total Flow Rate

The sum of the Gross Standard (GS) flow rates for all accumulators.

Mass

The sum of all accumulator masses.

Countdown

For more information, see Understand Countdown.

Accumulator

Name

The name of the accumulator.

Inh

This field indicates whether or not the processing of the accumulator is inhibited.

IV

The raw, uncorrected volume.

GSV

Gross Standard Volume (GSV). The indicated volume corrected to standard temperature and pressure.

Flow Rate

The current flow rate on the meter corrected to standard temperature and pressure.

Mass

The accumulator calculated mass based on accumulator volume and density.

Accumulator Reading

The underlying rate point's accumulated value.

Manual

Indicates whether the current or starting accumulator reading is a manually entered value. Each letter listed in the box is designed to correspond with the Density, Temperature, Pressure, Meter Correction Factor (MCF) values listed in the Accumulator Override Control window.

MCF

The Meter Correction Factor (MCF).

This value is a compensation factor which accounts for non-ideal mechanical effects such as bearing friction, fluid drag and mechanical or electrical readout drag. For more information, see Understand Meter Factors.

CTL

Temperature Correction factor for Liquids (CTL).

CPL

Pressure Correction factor for Liquids (CPL).

Temperature

Provides the observed temperature information.

Pressure

Provides the observed pressure information.

Density

Provides the observed density information.

Rate in Manual

Provides an indication of whether the rate point that provides flow rate information to the accumulator is being manually controlled. To change the RealTime vs. Manual setting of the rate point, navigate to the Rate Control window. For more information, refer to the AVEVA Enterprise SCADA HMI Administrator documentation.

Fresh

Indicates whether or not the rate point that is supplying information to the accumulator has polled successfully.

• Yes indicates that the data has been polled successfully.

• No indicates that the polling was unsuccessful and the information provided is now stale.

  For more information, see Understand Virtual Flow Computer (VFC) data quality information.