VEGA VEGAPULS 61 (≥ 2.0.0 - ≥ 4.0.0) Foundation Fieldbus Approval according to LPR radio standard - Manual (Page 44)

When non-contact level sensors are used, the measurement can be
influenced by the respective process conditions. In this menu item, the
measurement reliability of the level echo is displayed as dB value. The
measurement reliability equals signal strength minus noise. The higher
the value, the more reliable the measurement. With a functioning
measurement, the values are > 10 dB.
The "Echo curve" shows the signal strength of the echoes over the
measuring range in dB. The signal strength enables an evaluation of
the quality of the measurement.
The "False signal suppression" displays the saved false echoes (see
menu "Additional settings") of the empty vessel with signal strength in
"
dB" over the measuring range.
A comparison of echo curve and false signal suppression allows a
more accurate conclusion on measurement reliability. The selected
curve is continuously updated. With the [OK] key, a submenu with
zoom functions is opened:
l "X -Zoom": Zoom function for the meas. distance
l "Y -Zoom": 1, 2, 5 and 10x signal magnification in "dB"
Diagnosis/Measurement
reliability
Diagnoses/Curve indica-
tion
44 VEGAPULS 61 • Approval according to LPR radio standard
6 Set up with the indicating and adjustment module
41716
-EN
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