17 SuperUser mode
FLUXUS G801
17.3 Definition of the flow parameters
147
UMFLUXUS_G801V1-0EN, 2020-06-26
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
.
17.3.2
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, or
off
to work without correction of the flow velocity and return to the menu item
SYSTEM settings
.
• If
on
is selected, enter the slope. The input of zero deactivates the correction.
• Press ENTER.
• Enter the offset. Enter zero to work without offset.
• Press ENTER.
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 during the measurement that the correction of the flow velocity is activated.
Special Funct.\...\Calibration\...\Calibration
Special Funct.\...\Calibration\...\Calibration\Slope
Special Funct.\...\Calibration\...\Calibration\Offset
