Operating Instructions
Level measurement
CleverLevel
®
LBFH/I
Point level detection – hygienic/industrial
Table of contents
1.
Safety .......................................................... 3
2.
Construction and function ........................... 3
3.
Symbols in warning signs ............................ 4
4.
Transport and storage ................................. 4
5.
Assembly ..................................................... 4
6.
Electrical connection ................................... 7
7.
Electrical connection in explosion hazard
areas ........................................................... 8
8.
Con
fi
guration ............................................. 10
9
.
Troubleshooting ..........................................12
1
0
. Cleaning, maintenance and repair..............12
1
1
. Disposal .....................................................12
1
2
. Accessories ................................................1
2
1
3
. Technical data ............................................1
2
1
4
. Con
fi
guration overview ...............................1
3
1. Safety
Intended use
The
sensor must be used solely for the level
detection of liquids and solids with a dielectric
constant of at least 1.5.
The sensor must only be used for media against
which the housing material and sensor tip are
resistant.
Staff qualifi
c
ation
Only use staff who are trained for the activities
described. This applies in particular to assembly,
installation, con
fi
guration and troubleshooting.
Make sure that the staff have read and understood
these instructions.
Technical condition
Only use sensor in perfect technical condition.
Only use Baumer accessories.
Baumer will accept no liability for other
manufacturers’ accessories.
Risk of burns from hot media
During operation the sensor housing may warm
up to over 50 ºC. When working with hot media
provide protection against burns.
2. Construction and function
1
2
3
4
Fig. 1. Construction
f
L
C
µC
Fig. 2. Function
1
Sensor tip
2
LED
3
Connection with M12 plug
4
qTeach detector
An electrode integrated into the sensor tip forms
a capacitor with the environment. The medium
determines the capacity value depending on
its dielectric constant (DC values). A resonant
circuit occurs together with a coil in the sensor
electronics. Depending on the resonance
frequency measured and the programmable trigger
threshold, the switch signal is activated.
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