Gas flow meters
- Last UpdatedFeb 28, 2025
- 3 minute read
Symbols
Symbols commonly used in the gas flow compensation equations.
|
Symbol |
Name |
Description |
|
CGVF |
Corrected (Also known as “compensated") Gas Volume Flow Rate |
Volumetric flow rate corrected to standard conditions by AVEVA Production Accounting |
|
MGVF |
Measured Gas Volume Flow Rate |
Observed volumetric flow rate corrected to standard conditions by plant instrumentation (using presumed temperature, pressure and molecular weight at the design operating conditions) |
|
CGMF |
Corrected (Also known as “compensated") Gas Mass Flow Rate |
Mass flow rate re-corrected to standard conditions by AVEVA Production Accounting |
|
MGMF |
Measured Gas Mass Flow Rate |
Observed mass flow rate corrected to standard conditions by plant instrumentation (using presumed temperature, pressure and molecular weight at the design operating conditions) |
|
MMW |
Measured Molecular Weight |
Observed molecular weight |
|
MP |
Measured Pressure |
Observed pressure |
|
MT |
Measured Temperature |
Observed temperature |
|
DMW |
Design Molecular Weight |
Presumed molecular weight at design operation conditions |
|
DP |
Design Pressure |
Presumed pressure at design operation conditions |
|
DT |
Design Temperature |
Presumed temperature at design operating conditions |
Corrected Gas Volume Flow (CGVF) rate
Corrected Gas Mass Flow (CGMF) rate
Or, if a K Value for Gas Volume Flow rate was specified:
Or, if a K Value for Gas Mass Flow rate was specified:
Example
For example, the condition of FI001 gas stream is as the following.
-
Measured Mass Flowrate : 10,000 kg/hour = 10 ton(MT)/hour
-
Design MW : 6.6
-
Design Temperature : 43.3 C
-
Design Pressure : 43.9 kg/cm2G
-
Measured MW : 6.88
-
Measured Temperature : 48.5 C
-
Measured Pressure : 42 kg/cm2G
You can define the design values on the Design Data tab.
You can use compensation by selecting the Compensation checkbox and get the measured values from the tags.
And the compensated mass flow rate is calculated as volume correction factor is 0.99106.
