Flexim FLUXUS G809 - 9.4 Display of measured values

9 Measurement
FLUXUS G809 9.4 Display of measured values
105
UMFLUXUS_G809V2-2EN, 2020-06-25
9.4 Display of measured values
The measured values are displayed during the measurement as follows:
If the standard volumetric flow rate is selected as physical quantity during the gas measurement, the operating volumetric
flow rate can also be displayed.
• Press key to display the operating volumetric flow rate.
The character * indicates that the displayed value (here: operating volumetric flow rate) is not the selected measurand
(here: standard volumetric flow rate).
9.4.1 Value of the sound speed
The sound speed of the fluid can be displayed during the measurement by pressing key .
If an approximate range for the sound speed has been entered in the program branch Parameter and the transducer dis-
tance has been optimized afterwards, it is recommended to write down the sound speed for the next measurement. By do-
ing this, it will not be necessary to repeat the fine adjustment.
Write down the fluid temperature as the sound speed depends on it. The value can be entered in the program branch Pa-
rameter.
9.4.2 Toggling between the channels
If more than one measuring channel is available/activated, the transmitter works with an integrated multiplexer providing
simultaneous measurement on the different measuring channels.
The flow rate is measured on one measuring channel for approx. 1 s, then the multiplexer switches to the next activated
channel.
The time necessary for the measurement depends on the measuring conditions. If the measuring signal e.g., cannot be
detected immediately, the measurement duration might be > 1 s.
The outputs and the serial interface continuously receive the measured values of the corresponding channel. The results
are displayed according to the currently selected output options. The predefined unit of measurement of the volume flow
rate is m³/h.
The display of the measured values can be adjusted as follows:
• AutoMux mode
– all channels
– measuring channels only
– calculation channels only
• HumanMux mode
The command →Mux:Auto/Human toggles between the modes (see section 9.5).
AutoMux mode
• All channels
The measured values of all activated channels (measuring and calculation channels) are displayed consecutively. The
display and the measuring process are synchronized. The channel on which a measurement is being made is displayed
in the upper line on the left.
• Measuring channels only
The measured values of all measuring channels are displayed. The next active measuring channel is selected after min.
1.5 s.
• Calculation channels only
The measured values of all calculation channels are displayed. The next active calculation channel is displayed after
min. 1.5 s.
This mode can only be activated if at least 2 calculation channels are active.
A:Norm.volume flow
31.82 m3/h
A:act. Volume flow
* 31.82 m3/h