Spirit flow-x, Function Reference

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Flow-X─ Function Reference
4-235
Flow-X General functions - fxISO5167_VenturiNozzle
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 Venturi nozzle to pipe diameter ratio at upstream
temperature 0
Venturi Nozzle
diameter At the upstream temperature 0
Pipe diameter At the upstream temperature 0
Upstream pressure Pressure at upstream tapping (p
1
) bar(a) 0
Pressure at
downstream tapping Pressure at downstream tapping (p
2
) bar(a) 0
Recovered
downstream pressure Fully recovered downstream pressure (p
3
) bar(a) 0
Upstream
temperature Temperature at upstream tapping (t
1
) °C 0
Temperature at
downstream tapping Temperature at downstream tapping (t
2
) °C 0
Downstream
Temperature 'Fully recovered' downstream temperature (t
3
) °C 0
Upstream density Density at upstream tapping (

1
) kg/m3 0
Density at
downstream tapping
Pressure at downstream tapping (

2
)
kg/m3 0
Downstream density 'Fully recovered' downstream density (

3
) kg/m3 0
Reynolds number The pipe Reynolds number (this is the Reynolds
number upstream of the Venturi nozzle and not the
one within the device throat itself - 0
Discharge coefficient - 0
Expansion Factor - 0
Velocity of Approach 0
Pressure Range 0: Pressure is in valid range
1: Pressure is out of valid range - 0
Reynolds Range 0: Reynolds number is in valid range
1: Reynolds number is out of valid range - 0
Diameter Range 0: Device and pipe diameter and Beta ratio in valid
range
1: Device diameter, pipe diameter and/or Beta ratio
out of valid range - 0