8
5 Function
5.1 Measuring principle
The sensor determines the level according to the capacitive measuring principle:
• An electrical field [E] is generated
and influenced by the medium to be
detected. This change to the field
causes a measurement signal that is
electronically evaluated.
• The dielectric constant of a medium
is important for its detection. Media
with a high dielectric constant
(e.g. water) generate a strong
measurement signal, media with a
low dielectric constant (e.g. oils) a
correspondingly lower signal.
• The active measuring range of the
sensor probe is composed of 16
capacitive measuring segments.
They generate measurement
signals depending on the degree of
coverage.
Fig. 5-1
A
I
I
E
I: inactive zone
A: active zone (16 active segments)
E: electrical field
Dimensions → Technical data sheet
5.2 Operating principle / features of the unit
The unit can be installed in tanks of different sizes.
2 outputs are available. They can be set separately.
OUT1
switching signal for level limit / IO-Link
OUT2
switching signal for level limit
To adjust to the present application select the required operating mode.
5.2.1 Operating modes
1. Manual media selection with overflow prevention (factory setting LK10xx)
Recommended!
Highest operational reliability!
