Flexim FLUXUS F808 A1 Series User Manual

12 Advanced measuring functions FLUXUS F808, F809
UMFLUXUS_F808_8091V1-2-1EN, 2019-08-23 117
If Cut-off Flow\sign and user are selected, 2 values will have to be entered:
If Cut-off Flow\absolut and user is selected, only one value will have to be entered:
12.8 Uncorrected flow velocity
For special applications, the uncorrected flow velocity might be of interest.
The profile correction for the flow velocity is activated in Special Funct.\SYSTEM settings\Measuring\Flow
Velocity.
Uncorrected flow velocities transmitted to a PC are marked with uncorr.
12.9 Measurement of highly dynamic flows (FastFood mode)
The FastFood mode allows to measure flows with high dynamics.
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. During the acti-
vation of the FastFood mode no measurement is carried out on the other channels.
• The outputs of the FastFood mode activated channel can still be used.
• The 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 12.9.2).
• The FastFood mode has to be enabled and activated.
Enter the cut-off flow. Press ENTER.
All positive values of the flow velocity that are lower than this limit will be set to zero.
Enter the cut-off flow. Press ENTER.
All negative values of the flow velocity greater than this limit will be set to zero.
Enter the cut-off flow. Press ENTER.
The absolute value of all flow velocity values that are lower than this limit will be set to zero.
Select normal to display and transmit the flow velocity with profile correction.
Select uncorr. to display the flow velocity without profile correction. Press ENTER.
If uncorr. is selected, it has to be confirmed each time the program branch Measuring
is selected whether the profile correction is to be used.
If no is selected, the profile correction will be switched off.
All physical quantities will be calculated with the uncorrected flow velocity.
During the measurement, the designation of the physical quantity will be displayed in capi-
tal letters to indicate that the value is uncorrected.
Press ENTER.
If yes is selected, the uncorrected flow velocity will only be used if the flow velocity is se-
lected as the 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 will be displayed in capi-
tal 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 U.
+Cut-off Flow
2.5 cm/s
-Cut-off Flow
-2.5 cm/s
Cut-off Flow
2.5 cm/s
Flow Velocity
>NORMAL< uncorr.
A:PROFILE CORR.
>NO< yes
A:FLOW VELOCITY
2.60 m/s
A:PROFILE CORR.
NO >YES<
A:Flow Velocity
*U 54.5 m/s

Flexim FLUXUS F808 A1 Series Specifications

General

Brand	Flexim
Model	FLUXUS F808 A1 Series
Category	Measuring Instruments
Language	English