Flexim FLUXUS F502TE - Page 122

17 SuperUser mode
17.2 Definition of the flow parameters FLUXUS F502TE
2020-05-29, UMFLUXUS_F502TEV1-5EN
122
• Enter the max. Reynolds number at which the flow is laminar. The entered number will be rounded to hundreds. Enter
zero to use the default value of 1000.
• Press ENTER.
• Enter the min. Reynolds number at which the flow is turbulent. The entered number will be rounded to hundreds. Enter
zero to use the default value of 3000.
• Press ENTER.
A request is displayed if an additional correction of the flow velocity is to be defined.
• Select on to define the correction data or off to work without correction of the flow velocity and return to the menu item
SYSTEM settings.
17.2.2 Correction of the flow velocity
After the profile bounds have been defined, it is possible to define a correction of the flow velocity:
v
cor
= m · v + n
where
All quantities derived from the flow velocity will be calculated with the corrected flow velocity. The correction data will be
transmitted to the PC or printer during the online or offline transmission.
• Select on to define the correction data, off to work without correction of the flow velocity and return to the menu item
SYSTEM settings.
Special Funct.\...\Calibrat. data\...\Laminar flow
Special Funct.\...\Calibrat. data\...\Turbulent flow
Special Funct.\...\Calibrat. data\...\Calibration
Example
profile bound for laminar flow: 1500
profile bound for turbulent flow: 2500
At Reynolds numbers < 1500 the flow is regarded as laminar for the calculation of the physical quantity. At Reynolds
numbers > 2500 the flow is regarded as turbulent. The range of 1500...2500 is the transition range between laminar and
turbulent flow.
Notice!
The defined profile bounds remain activated after the deactivation of the SuperUser mode.
v – measured flow velocity
m – slope, range: -2.0...+2.0
n – offset, range: -12.7…+12.7 cm/s
v
cor
– corrected flow velocity
Notice!
It will not be displayed that the correction of the flow velocity is active during the measurement.
Special Funct.\...\Calibrat. data\...\Calibration