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9 Menu overview
VEGAPULS 42 • Three-wire with IO-Link (2 x transistor or 4 … 20 mA plus 1 x transistor)
1016153-EN-230316
9.2 Explanation special parameters
Measuring range start limiting is activated here. The appropriate
distance value is set in the special parameter SP02.
→ Jumps in the measured value to a changing false signal in the close
range can thus be prevented.
Note:
However, activation also means that the sensor no longer accepts the
level echo in the event of overfilling above the measuring range begin.
A measured value jump to a multiple echo may occur here.
Here, an individual limitation of the measuring range begin takes
place independent of the 100 % adjustment. The entered distance
value in "
m
" must always be between the sensor reference point and
the maximum level.
→ Echoes between the sensor reference point and this value will not
be detected.
The noise averaging is a temporal, floating average value formation of
all signals received by the sensor. The set factor determines the num-
ber of averaged echo curves as a Basis 2 exponent (example: factor 2
corresponds to the averaging of 2² [= 4] echo curves).
→ Used for false signals caused by sporadic echoes, e.g. from agita
-
tor blades. The false signals are given a lower relevance or amplitude
by a larger value of SP05. They are thus more strongly suppressed in
their evaluation.
→ Use for level echoes with changing amplitude, e.g. due to a turbu
-
lent medium surface. The level echoes receive a greater relevance
or constant amplitude through a larger value of SP06. They are thus
increased in their evaluation.
Note:
A higher factor for noise averaging can lead to a longer reaction time
or a delay of the measured value update.
When this parameter is activated, the first echo not saved as a false
echo with sufficiently great amplitude is selected as a product echo.
→ This is useful for very large multiple reflections by e.g. a round ves
-
sel lid.
This parameter in "
dB
" determines how much smaller the useful echo
amplitude may be compared to the largest echo so that it is evaluated
as the first large echo and thus as a product echo
→ Up to this value, a relatively weak reflection signal of the medium is
thus output as a measured value.
Here you can switch over if the adjustment and the measured value
output is carried out in "
Distance
" or "
Filling height
".
SP01 - Activate measur-
ing range start limiting
SP02 - Manual limitation
of the measuring range
begin
SP05/06 - Factor for noise
averaging rising/falling
SP15 - Activate "First
large echo" function
SP16 - Minimum ampli-
tude "First large echo"
SP25 - Adjustment