VEGA VEGAFLEX 52V - Manual (Page 30)

30 VEGAFLEX 51V and 52V
Set-up / Adjustment with PC
The following curves can be displayed:
Raw value curve (red)
The red curve means the absolute signal
which the receiver of VEGAFLEX detects.
Beside the useful echo this curve also con-
tains false signals.
The highest amplitude is detected as useful
echo. Check by sounding if the value of the
useful echo corresponds to the actual dis-
tance to the level.
When both values do not correspond, you
have to gate out the dominant false echoes
with the function "Empty vessel profile“.
Vessel profile (blue)
This curve shows in normal condition the
actual empty vessel profile.
For gating out of false echoes you can modify
the blue curve of the vessel profile with the
function "Empty vessel profile".
Reference line (green)
All amplitudes of the red curve which are
below the green reference line, are sup-
pressed (ringing, noise, false echoes etc.).
All amplitudes above this line are possible
echoes which are processed by the soft-
ware.
Logarithmic raw value curve (black)
The curve shows the difference between raw
value curve (red) and reference line (green).
For this curve the scale on the right page
(dB) is valid.
Documentation
When clicking to the button "Documentation“
the actual echo curve will be saved.
Echo data
When clicking to the button "Echo data“, a
window is displayed where all echoes de-
tected by the sensor with DB-information and
a probability processing are listed.
Start
When clicking to "Start“, the echo curve will
be updated continuously. With "Stop“ you can
terminate the update.
Empty vessel profile
With the functions in this window you can
gate out false echoes.
The blue empty vessel profile curve in the
echo curve window shows the actual empty
vessel profile.
Determine the level by sounding. When the
sensor has determined instead of the
sounded level a false echo as most probable
echo, you can gate the echo out. Choose the
function "Create new“. Enter the measured
distance to the medium. All false echoes, in
the range to the adjusted distance, are auto-
matically gated out. Note that then also the
blue curve of the empty vessel profile
changes.
.
With "Update“ you can extend the empty
vessel profile when new false echoes occur
with reducing level.
When you want to delete the existing empty
vessel profile, click to "Cancel“.