Burkert 8137 Manuel D'instructions page 31

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Linearisation curve
Sensor-TAG
Gating out of false sig-
nals
LEVEL TRANSMITTER 8137 • 4 ... 20 mA/HART
6 Set up with the indicating and adjustment module
Enter the requested parameter via the appropriate keys, save your
settings and jump to the next menu item with the [->] key.
A linearization is necessary for all vessels in which the vessel volume
does not increase linearly with the level - e. g. with a cylindrical or
spherical tank - and the indication or output of the volume is required.
Corresponding linearization curves are preprogrammed for these
vessels. They represent the correlation between the level percentage
and vessel volume. By activating the appropriate curve, the volume
percentage of the vessel is displayed correctly. If the volume should
not be displayed in percent but e.g. in l or kg, a scaling can be also set
in the menu item "Display".
Linearisation curve
linear
Enter the requested parameter via the appropriate keys, save your
settings and jump to the next menu item with the [->] key.
In this menu item you can enter an unambiguous designation for the
sensor, e.g. the measurement loop name or the tank or product
designation. In digital systems and in the documentation of larger
plants, a singular designation should be entered for exact identification
of individual measuring sites.
Sensor-TAG
Sensor
With this menu item, the Basic adjustment is finished and you can now
jump to the main menu with the [ESC] 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 low level so that all potential interfering reflections will
be detected.
Gating out of false signals
Change now?
Proceed as follows:
1
Move from the measured value display to the main menu by
pushing [OK].
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