VEGA VEGAFLEX 52P (Profibus PA) - Manual (Page 41)

VEGAFLEX 51P and 52P 41
Setup
Zoom/Unzoom
After activation of these two functions, you
can either zoom or unzoom the curve with the
left mouse key.
When you activate "Zoom", you can choose
the requested part of the figure by pushing
the left mouse key and drawing a frame.
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 to determine if the
value of the useful echo corresponds to the
actual distance to the level.
If the two values do not correspond, you
have to gate out the dominant false echoes
with the function "Empty vessel profile".
Empty vessel profile (blue)
This curve shows in normal condition the
actual empty vessel profile.
To gate 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).
The scale on the right side (dB) applies to
this curve.
Documentation
If you click on the button "Documentation", the
actual echo curve will be saved.
Echo data
If you click on the button "Echo data", a win-
dow is displayed in which all echoes de-
tected by the sensor are listed with dB
information and a probability evaluation.