VEGA VEGAPULS 67 (≥ 2.0.0 - ≥ 4.0.0) Profibus PA - Manual (Page 42)

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6 Set up with the indicating and adjustment module
VEGAPULS 67 • Profibus PA
36533-EN-121011
4. Enter the appropriate distance value in m (corresponding to the
percentage value) for the full vessel. Keep in mind that the max.
level must lie below the min. distance to the antenna edge.
5. Save settings with [OK]
The respective min. and max. measured value is saved in the sensor.
The values are displayed in the menu item "Peak values".
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 function-
ing 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
Diagnosis/Peak value
Diagnosis/Measurement
reliability
Diagnoses/Curve indica-
tion