13 Advanced Measuring Functions
FLUXUS ADM 8027, F801, ADM 8127B
UMFLUXUS_F8V4-6-1EN, 2018-10-10
91
13.8.3
Activation/Deactivation of the FastFood Mode
If the FastFood mode is enabled and a measurement is started, the normal measuring mode will still be running (i.e. multi-
channel measurement with permanent adaptation to the measuring conditions). If the data logger is activated, the mea-
sured values will not be stored.
If the data logger is activated, a new data set will be created and storing of measured values will be started. If the Fast-
Food mode is deactivated or if the measurement is interrupted, the storing will be stopped.
13.9
Calculation Channels
In addition to the ultrasonic measuring channels, the transmitter has two virtual calculation channels Y and Z. The mea-
sured values of the measuring channels A and B can be calculated via the calculation channels.
The result of the calculation is the measured value of the selected calculation channel. This measured value is equivalent
to the measured values of a measuring channel. All operations with the measured values of a measuring channel (totaliz-
ing, online transmission of data, storing, outputs, etc.) can also be done with the values of a calculation channel.
13.9.1
Characteristics of the Calculation Channels
In the program branch
Parameter
, the measuring channels to be used for the calculation and the calculation function
have to be entered.
A calculation channel cannot be attenuated. The damping factor has to be set separately for each of the two measuring
channels.
Two cut-off flow values for each calculation channel can be defined. The cut-off flow is not based on the flow velocity as
for measuring channels. Instead, it is defined in the unit of measurement of the physical quantity selected for the calcula-
tion channel. During the measurement, the calculated values are compared to the cut-off flow values and set to zero, if
necessary.
A calculation channel provides valid measured values if at least one measuring channel provides valid measured values.
13.9.2
Parameterization of a Calculation Channel
During the measurement, select the command
→
Toggle FastFood
in the upper line to
activate/deactivate the FastFood mode on the channel whose values are currently dis-
played. Press ENTER.
The activated measuring mode can be displayed in the upper line.
Note!
The values of the current series of measured values will be deleted if the FastFood mode is deacti-
vated and activated again without interrupting the measurement.
The values of the current series of measured values will be kept if the measurement is interrupted be-
fore the FastFood mode is activated again. A new series of measured values is created when the
next measurement is started.
Note!
Calculation channels are only available if the transmitter has more than one measuring channel.
Select a calculation channel (Y or Z) in the program branch
Parameter
. Press ENTER.
The current calculation function is displayed. Press ENTER to edit the function.
A:Volume flow
54.5
m3/h
A:Mode=FastFood
54.5
m3/h
Parameter
↕
for Channel
Y:
Calculation:
Y= A - B
