16 Advanced functions
FLUXUS G809
16.6 FastFood mode
137
UMFLUXUS_G809V2-2EN, 2020-06-25
• Press ENTER.
If
yes
is selected, the uncorrected flow velocity will only be used if the flow velocity is selected as physical quantity in the
program branch
Output Options
.
All other physical quantities (volumetric flow rate, mass flow rate, etc.) will be determined with the corrected flow velocity.
During the measurement, the designation of the physical quantity "flow velocity" is displayed in capital letters to indicate
that the value is uncorrected.
• Press ENTER.
In both cases, the corrected flow velocity can also be displayed.
Press key
to scroll until the flow velocity is displayed. The uncorrected flow velocity is marked with an "
U
".
Uncorrected flow velocities transmitted to a PC are marked with
uncorr.
16.6
FastFood mode
The FastFood mode allows to measure high dynamic flows. A continuous adaptation to changing measuring conditions is
only partially realized in the FastFood mode.
• The sound speed of the fluid is not updated. The last measured value of the sound speed before toggling to the
FastFood mode is used.
• It is not possible to change the measuring channel. The measurement takes place on one channel only. As long as the
FastFood mode is activated, no measurement is carried out on the other channels.
• The outputs of the FastFood mode activated channel can still be used. They are actualized every 100 ms independently
from the storage rate.
• Outputs for further channels (multi-channel measurement) transmit an error value.
• The measured values are stored with the storage rate of the FastFood mode, see section 16.6.2.
• The FastFood mode has to be enabled and activated.
16.6.1
Enabling/disabling the FastFood mode
• Enter the HotCode
007022
, see section 8.4.
• Select
yes
to enable the FastFood mode,
no
to disable it.
• Press ENTER.
If the FastFood mode is enabled, a time t has to be entered. When the FastFood mode is started, the signal amplification
settings will always be checked after the expiration of time t.
Enter zero if no check is to be carried out.
16.6.2
Storage rate of the FastFood mode
If the FastFood mode is enabled and when activating the data logger it is necessary to enter a storage rate in ms in the
program branch
Output Options
.
Enable FastFood
Enable FastFood\FF-check (0=OFF)
Output Options\...\Storing\Storage Rate
A:FLOW VELOCITY
2.60
m/s
A:PROFILE CORR.
>no<
YES
A:Flow Velocity
*U
24
m/s
