User Manual

66 VEGAPULS 42 and 44 – 4 … 20 mA
Setup
• If you want to make no adjustments, quit
this menu with " Quit “.
• With " OK “ you save the adjustments made.
• Click in the menu window „ Meas. environ-
ment “ to " Quit “.
You are again in the menu window „ Sensor
optimisation “.
Echo curve
In the next illustration, you see the echo curve
after optimum directing of the sensor to the
product surface (sensor axis perpendicular
to the product surface). The false echo, e.g.
caused by a strut, is now reduced by more
than 10 dB and will no longer influence the
measurement.
• Quit the menu " Echo curve “ with " Quit “.
False echo storage
With the menu item " Echo curve “ in the menu
window "Sensor optimisation“, you can see
the course and the strength of the detected
radar echo. If, due to vessel installations, you
expect strong false echoes, a correction (if
possible) of the mounting location and orien-
tation (during simultaneous monitoring of he
echo curve) can help localise and reduce the
size of the false echoes. In the following illus-
tration, you see the echo curve with the false
echo nearly as large as the product echo
(before correction of the sensor orientation,
i.e. pointing it directly at the product surface).
With the menu item " False echo storage “ in
the menu " Sensor optimisation “, you can
authorise the sensor to save false echoes.
The sensor electronics then saves the false
echoes in an internal database and assigns
them a lower level of importance than the
useful echo.