Vega VEGASON 51K, Инструкция по эксплуатации

Страница: 48 / 64

48 VEGASON 51K … 53K
Set-up
• Save the adjustments and quit the menu
window "Limitation of the operating range“
again.
• Click on "Measuring condition“.
• In the menu window "Measuring condition“
you click on the options corresponding to
your application.
• Confirm with "OK“.
After a few seconds of saving during which
the adjustments are permanently saved in
the sensor, you are in the window "Meas.
environment“ again.
• Click in the menu window "Meas. environ-
ment“ on "Quit“.
You are in the menu window "Sensor
optimisation“ again.
Echo curve
With the menu point "Echo curve“ in the menu
window "Sensor optimisation“ you can see
the course and the strength of the detected
ultrasonic echo. If, due to vessel installations,
you have to expect strong false echoes, a
correction of the installation position (if possi-
ble) can help, by monitoring the echo curve,
to localise and reduce the size of the false
echoes. In the following figure you see the
echo curve before the correction of the instal-
lation angle (directing to the product surface)
with a false echo with nearly the same size as
the product echo.
In the next figure you then see the echo
curve after optimum directing of the sensor to
the product surface (sensor axis vertical 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.