Burkert 8137 Manuel D'instructions page 30

6 Set up with the indicating and adjustment module
Vessel form
Damping
30
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Liquid
According to the conductivity and the dielectric value of liquids, the
reflection properties can differ considerably. Therefore additional
options such as "Solvent", "Chem. mixture" and "Water based" are
offered below the menu item Liquid.
With solids, you can also choose between "Powder/Dust", "Granular/
Pellets" or "Ballast/Pebbels".
Through this additional selection, the sensor is adapted perfectly to the
product and measurement reliability, particularly in products with bad
reflective properties, is considerably increased.
Enter the requested parameter via the appropriate keys, save your
settings and jump to the next menu item with the [->] key.
Apart from the medium, the vessel shape can also influence the
measurement. To adapt the sensor to these measuring conditions, this
menu item offers different options depending on whether liquid or solid
is selected. With "Liquids" these are "Storage tank", "Stilling tube",
"Open vessel" or "Stirred vessel", with "Solid", "Silo" or "Bunker".
Vessel form
Storage tank
Information:
With LEVEL TRANSMITTER 8137 with electronics version "Increased
safety", "Solid" is preset as factory setting. However, the instrument
should be used preferably in liquids. In such cases, the vessel form
should be set to "Storage tank" during setup.
Enter the requested parameter 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
LEVEL TRANSMITTER 8137 • 4 ... 20 mA/HART