13
5 1 2 4 3
1
4
5
3
2
Electrical connection
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. 9.
For connecting the electrode 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.
If you do not use the prefabricated control cable assembly, use screened five-core control cable, e. g.
LiYCY 5 x 0.5 mm², 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 or controller: 30 m, with
conductivities from 1 to 10 μS/cm: max. 10 m.
Attention
If the above-mentioned control cable assembly is not used, the connecting line must
be provided with a screened female connector according to the wiring diagram.
Fig. 7.
Observe the mounting instructions of the connector manufacturer.
Make sure that connecting cables leading to the equipment are segregated and run
separately from power cables.
Connect screens according to the installation instructions for the conductivity switch-
es/controllers LRS 1-7, LRS 1-50, LRR 1-50 and LRR 1-52.
Connecting the conductivity electrode
Conductivity electrode LRG 16-9, pin assignment
Fig. 9
Connector/
Socket
Assignment
Colour of
individual
conductors
1
Measuring electrode
brown (BN)
2
Resistance thermometer
Pt 100
white (WH)
3
blue (BU)
4
black (BK)
5
Earth
grey (GY)
Control cable
Female
connector
f
g
Conductivity electrode
Sensor plug-in connection
