12
Tools
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Screwdriver, size 3.5 x 100 mm, completely insulated according to VDE 0680-1.
Attention
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To commission the equipment please refer to the installation & operating manuals for
LRG 12-2, LRG 16-4, LRG 16-9, LRG 17-1, LRG 19-1 and TRG 5-.. .
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Make sure that connecting cables leading to the equipment are segregated and run
separately from power cables.
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Check the connection of the screen to the central earthing point (CEP) in the control
cabinet.
In the plant:
Wiring the conductivity electrode
Connecting conductivity electrode LRG 12-2, LRG 16-4, LRG 17-1 and LRG 19-1,
resistance thermometer TRG 5-..
To connect the equipment use screened multi-core control cable with a min. conductor size 0.5 mm
2
,
e. g. LiYCY 3 x 0.5 mm
2
.
Wire terminal strip in accordance with the wiring diagram.
Fig. 3
Connect the screen only once to the central earthing point (CEP) in the control cabinet.
Max. cable length between conductivity electrode / resistance thermometer and conductivity
switch: 30 m, with conductivities from 1 to 10 μS/cm: max. 10 m.
Make sure that connecting cables leading to the equipment are segregated and run separately from
power cables.
The conductivity electrode LRG 16-9 is equipped with a sensor plug-in connection type M 12, with 5
poles, A-coded, pin assignment see
Fig. 3.
For connecting the equipment preconfigured control cable
assemblies (with male and female connectors) of various lengths are available as add-on equipment.
Note that the recommended control cable is not UV-resistant and, if installed outdoors, must be
protected by a UV-resistant plastic tube or cable duct.
To connect the conductivity switch LRS 1-50 remove the connector and wire the terminal strip accord-
ing to the wiring diagram.
Fig. 3
Connect the screen only once to the central earthing point (CEP) in the control cabinet.
If you do not use the prefabricated control cable assembly, use screened five-core control cable, e. g.
LiYCY 5 x 0.5 mm
2
, for connecting the equipment. In addition, connect at the electrode end a screened
female connector to the control cable.
Max. cable length between conductivity electrode and switch: 30 m, with conductivities from 1
to 10 μS/cm: max. 10 m.
Make sure that connecting cables leading to the equipment are segregated and run separately from
power cables.
Connection of conductivity electrode LRG16-9
