VEGA VEGAFLEX 67 (-40…+150°C) Foundation Fieldbus - Manual (Page 26)

Application
Liquid
Standard
(DK ≥ 2)
Measured products have different reflective properties depending on
their respective permittivity (dielectric constant). That's why there is an
additional selection option.
Under "Sensitivity" you can select "Standard (DK ≥ 2)" or "Increased
sensitivity (DK < 2)".
Through this the sensor is optimally adapted to the product and
measurement reliability, particularly in products with poor reflective
properties, is considerably increased.
Enter the requested parameters via the appropriate keys, save your
settings and jump to the next menu item with the [->] key.
To suppress fluctuations in the measured value display, e. g. caused
by an agitated product surface, a damping can be set. This time can
be between 0 and 999 seconds. Keep in mind that the reaction time of
the entire measurement will then be longer and the sensor will react to
measured value changes with a delay. In general, a period of a few
seconds is sufficient to smooth the measured value display.
Damping
0 s
Enter the requested parameters via the appropriate keys, save your
settings and jump to the next menu item with the [->] key.
High sockets or vessel installations, such as e.g. struts or agitators as
well as buildup and weld joints on the vessel walls cause interfering
reflections which can impair the measurement. A false echo storage
detects and marks these false echoes, so that they are no longer taken
into account for the level measurement. A false echo memory should
be created with empty vessel so that all potential interfering reflections
will be detected.
Probes in coax version require no gating out of false echoes since they
are not influenced by false reflections.
False signal suppression
Change now?
Proceed as follows:
Damping
False signal suppres-
sion
26 VEGAFLEX 67 • Foundation Fieldbus
6 Set up with the indicating and adjustment module PLICSCOM
31856
-EN
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