9 Measurement
9.2 Measurement settings
FLUXUS G809
2020-06-25, UMFLUXUS_G809V2-2EN
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During the measurement of gases, it is possible to select the standard volumetric flow rate as the physical quantity.
For the selected physical quantity (except for the sound speed), a scroll list with the available units of measurement is dis
-
played. The unit of measurement which was selected previously is displayed first.
• Select the unit of measurement of the selected physical quantity.
• Press ENTER.
Prefix of the units of measurement
For better differentiation between the operating volumetric flow rate and the standard volumetric flow rate, the units of
measurement can be displayed with a prefix during the measurement. The unit of measurement of the operating volumet
-
ric flow rate is displayed with an A, the unit of measurement of the standard volumetric flow rate with an
N
or
S
.
• Select
Special Funct.\SYSTEM settings\Gas-Measuring
.
• Press ENTER until
Unit prefix vol
is displayed.
• Select a list item to set the prefix of the units of measurement.
• Press ENTER.
The following list items are available:
If a totalizer is activated during the measurement of the standard volumetric flow rate, the standard volumetric flow rate will
be totalized. The unit of measurement of the standard volumetric flow rate is displayed without any prefix.
9.2.2
Input of the damping factor
Each displayed measured value is a floating average of all measured values of the last x seconds, with x being the damp
-
ing factor. A damping factor of 1 s means that the measured values are not averaged because the measuring rate is ap
-
prox 1/s. The default value of 10 s is appropriate for normal flow conditions. Values which fluctuate strongly due to a high
-
er flow dynamic, require a higher damping factor.
• Select the program branch
Output Options
.
• Press ENTER until the menu item
Damping
is displayed.
• Enter the damping factor.
• Press ENTER.
• Press key BRK to return to the main menu.
Output Options\for Channel A\Physic. Quant.\Norm.volume flow
Notice!
If the physical quantity or the unit of measurement is changed, the settings of the outputs have to be checked, see
section 9.2.3.
Special Funct.\SYSTEM settings\Gas-Measuring\Unit prefix vol
list item
display of the operating volumetric flow rate
display of the standard volumetric flow rate
(none)
without prefix, e.g.,
m³/h
without prefix, e.g.,
m³/h
’ ’/’N’
without prefix, e.g.,
m³/h
with prefix N, e.g.,
Nm³/h
’ ’/’S’
without prefix, e.g.,
m³/h
with prefix S, e.g.,
Sm³/h
’A’/’S’
with prefix A, e.g.,
Am³/h
with prefix S, e.g.,
Sm³/h
Output Options\...\Damping
