VEGA VEGAPULS 56V - Manual (Page 58)

58 VEGAPULS 56V
Echo curve
With the menu point " Echo curve“ you can
display the course and the strength of the
detected radar echo.
If you have to expect strong false echoes
due to vessel installations, a correction of the
installation position (if possible) can help by
monitoring the echo curve, to localize and
reduce the size of the false echoes.
In the following figure you see the echo curve
before the correction of the installation angle
(directing to the product surface) with a false
echo with nearly the same size than the prod-
uct echo which is caused by a strut.
In the next figure you see the echo curve
after optimum directing of the sensor to the
product surface (sensor axis reaches the
product surface vertically).
In the menu point " Pulse velocity“ it is addi-
tionally possible to enter a correction factor
for the pulse velocity of the radar signal.
Note:
The radar signal spreads with light velocity.
• Quit this menu with "Cancel“ when you do
not want to make any adjustment.
• Save with "OK“ the adjustments carried
out.
• Click in the menu window " Meas. environ-
ment“ to "Quit“.
You are again in the menu window " Sensor
optimisation“.
Set-up
In the menu point " Pulse velocity“ you gener-
ally have only made adjustments when you
measure in a surge or bypass pipe (stand-
pipe). With a standpipe measurement a shift-
ing of the running time is caused which is
dependent on the inner diameter of the
standpipe. To consider this shifting of the
running time, it is necessary to inform the
sensor about the tube diameter (inner) of the
standpipe.