VEGA VEGAFLEX 52K - Manual (Page 28)

28 VEGAFLEX 52K
Setup
The following curves can be displayed:
Raw value curve (rot)
The red curve represents the absolute si-
gnal, detected by the receiver of VEGAFLEX.
This curve receives beside the useful echo,
also interference signals. The highest ampli-
tude is interpreted as the level echo. Check
by sounding if the value of the useful echo
corresponds to the real distance to the level.
If the two values do not correspond, you
have to filter out the dominant false echoes
with the function "Empty vessel profile“.
Vessel profile (blue)
In normal condition, this curve represents the
beginning and end of the vessel.
To filter out false echoes, you can modify the
blue curve of the vessel profile with the func-
tion "Empty vessel profile“.
Reference line (green)
All amplitudes of the red curve which are
below the green reference line will be 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 represents the difference between
raw value curve (red) and reference line
(green). The scale on the right (dB) is valid
for this curve.
Documentation
When clicking the button "Documentation“,
the immediate echo curve will be saved.
Echo data
When clicking the button "Echo data“, a win-
dow is displayed where all echoes detected
by the sensor are listed with dB information
and a probability processing.
Start
When clicking "Start“, the echo curve is up-
dated continuously. With "Stop“ you can ter-
minate the update.
Empty vessel profile
With the functions in this window you can filter
out false echoes. The blue empty vessel
profile curve in the echo curve window repre-
sents the actual empty vessel profile.
Determine the level by sounding. It is possi-
ble to filter out the echo, if the sensor has
interpreted a false echo as the probable level
echo instead of the sounded level. Choose
the function "Create new“. Enter the sounded
distance to the medium. All false echoes
within the range of the adjusted distance are
gated out automatically. Please note that also
the blue curve of the empty vessel profile
changes.
With "Update“ you can extend the empty
vessel profile, in case new false echoes oc-
cur with falling level.
If you want to delete the existing empty ves-
sel profile, you have to click to "Delete“.