Operating Instructions
Level measurement
CleverLevel
®
PL20H/S
Adaptive trigger – 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. Approvals .................................................... 7
7.
Electrical connection ................................... 7
8.
Configuration
............................................... 9
9. Troubleshooting ..........................................11
10. Cleaning, maintenance and repair..............11
11. Disposal .....................................................11
12. Accessories ................................................11
13. Technical data ............................................11
14. Configuration overview
and factory settings ....................................13
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 qualification
Only use staff who are trained for the activities
described. This applies in particular to assembly,
installation, configuration 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 virtual capacitor with the environment. The
medium determines the capacity value depending
on its dielectric constant (DC values). The virtual
capacitor and a coil built into the sensor form a
resonant circuit. Depending on the resonance
frequency measured and the programmable trigger
type, the switch signal is activated.
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