Spirit flow-x, Справочник по функциям

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Flow-X─ Function Reference
4-313
Flow-X General functions - fxVCone_M
2: Downstream
Input 'Density' represents the
density at the downstream tapping
(

2
).
3: Recovered
Input 'Density' represents the
density downstream at a location
Where the pressure has fully
recovered (

3
).
Density Exponent. This factor is used when density
correction is enabled. The formula 1/

will be used when the input value is set
to 0, else the input value will be used.
For more details refer to section 'Density
correction'.
- 0
Fluid The type of fluid being measured
1: Gas
2: Liquid - 1
Discharge coefficient The discharge coefficient of the meter as
specified by the manufacturer.
The McCrometer reference document
states that the discharge coefficient is a
function of Reynolds number. It is
advised that the meter is calibrated
across the range of Reynold numbers for
which the meter is used.
The resulting correction curve can be
implemented through function
fxInterolationCurve. Input 'Discharge
coefficient' needs to be linked to the
corresponding output of this additional
function. - 0..2 0.85
Function outputs Remark EU Fallback
Status 0: Normal (No error condition)
1: Input argument out of range
2: No convergence
Mass flow rate The calculated mass flow rate tonne/h 0
Beta ratio Cone to pipe diameter ratio at upstream
temperature - Input Cone
diameter /
Input Pipe
diameter
Cone diameter At the upstream temperature mm Input Cone
diameter
Pipe diameter At the upstream temperature mm Input Pipe
diameter
Upstream pressure Pressure at upstream tapping (p
1
) bar(a) Input
Pressure
Pressure at
downstream
tapping Pressure at downstream tapping (p
2
) bar(a) Input
Pressure
Recovered
downstream
pressure Fully recovered downstream pressure (p
3
) bar(a) Input
Pressure
Upstream
temperature Temperature at upstream tapping (t
1
) °C Input
Temperature
Temperature at
downstream Temperature at downstream tapping (t
2
) °C Input
Temperature