FMS assigns an expected unit set to data coming from GMR. On occasion, GMR data could arrive with some data items using unit values other than what is expected. To adjust for this, you can define and specify an optional unit set override to correct the unit value inconsistencies.
The following EFM (electronic flow measurement) data item units list the expected unit values for the GMR unit set applied to data coming into the CygNet Measurement system from GMR.
Expected GMR units for the following data item types are listed in the tables below.
The following units apply to GMR configuration data items. Additional Shared Units apply to multiple data item types.
|
GMR Configuration Item Description |
GMR Units |
|---|---|
| Atmospheric pressure | psi (pound-force per square inch) |
| Base pressure | psi (pound-force per square inch) |
| Base temperature | F (degrees Fahrenheit) |
| Cone diameter | in (inches) |
| Cone reference temperature | F (degrees Fahrenheit) |
| Elevation | ft (feet) |
| K factor - Volume | p/MCF (pulses per thousand cubic feet) |
| Low flow cutoff - DP | inH2O (inches of water) |
| Low flow cutoff - Flow rate | CFH (cubic feet per hour) |
| Low flow cutoff - Pulse interval | sec (seconds) |
| Meter tube inside diameter | in (inches) |
| Meter tube reference temperature | F (degrees Fahrenheit) |
| Orifice coefficient of thermal expansion | in/in-F (inches per inch - Fahrenheit) |
| Orifice plate bore size | in (inches) |
| Orifice plate reference temperature | F (degrees Fahrenheit) |
| Pipe coefficient of thermal expansion | in/in-F (inches per inch - Fahrenheit) |
| Pipe length | ft (feet) |
The following units apply to GMR gas data items. Additional Shared Units apply to multiple data item types.
The following units apply to GMR liquid data items. Additional Shared Units apply to multiple data item types.
|
GMR Liquid Item Description |
GMR Units |
|---|---|
| Density | lb/bbl (pounds per barrel) |
| Density pressure | inH2O (inches of water) |
| Density temperature | F (degrees Fahrenheit) |
| EVP (Equilibrium vapor pressure) | psi (pound-force per square inch) |
| Gross standard volume (GSV) | bbl (barrels) |
| Gross volume | bbl (barrels) |
| Heating value - Mass | BTU/lb (British thermal units per pound) |
| Heating value - Volume | BTU/CF (British thermal units per cubic foot) |
| Indicated volume (IV) | bbl (barrels) |
| K factor - Mass | p/lbm (pulses per pound-mass) |
| K factor - Volume | p/MMCF (pulses per million cubic feet) |
| Liquid volume | bbl (barrels) |
| Mass | lb (pounds) |
| Meter pressure | psi (pound-force per square inch) |
| Meter temperature | F (degrees Fahrenheit) |
| Standard volume | bbl (barrels) |
| Odorized density | lb/bbl (pounds per barrel) |
| Odorized volume | bbl (barrels) |
| Reid vapor pressure | psi (pound-force per square inch) |
| S&W percent (sediment & water percent) | % (percent) |
| S&W volume (sediment & water volume) | bbl (barrels) |
| Tank level | ft (feet) |
| Uncorrected density | lb/bbl (pounds per barrel) |
| Vessel draft level | ft (feet) |
| Weight | Klb (kilopounds) |
Some units are shared by multiple data items, such as gas configuration and gas metering, or gas items and liquid items. These units are included in the following table to identify units applicable to a variety of GMR data item types.
|
GMR Item Description |
GMR Units |
|---|---|
| Gas composition | % (percent) |
| Liquid concentration | ppm (parts per million) |
| Viscosity | lbm/fts (pounds per foot second) |
Unless you specify otherwise, FMS will apply the expected unit set to data coming into FMS via a GMR migration or via an FMS Legacy data group, even if it contains items with data units other than what is expected. To allow you to correct for this, FMS provides the option to specify a Unit set override to apply to the incoming GMR migration / FMS Legacy data instead.
The unit set override can be set in the following locations.
FMS Explorer
FMS Toolbox
FMS Scripting
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