13
Connecting the conductivity electrode
To connect the conductivity electrode use screened multi-core control cable with a min. conductor size
0.5 mm², e.g. LiYCY 3 x 0.5 mm² .
Connect the screen
only once
to the central earthing point
(CEP) in the control cabinet
. Wire the
terminals on the connecting plate according to
Fig. 9
.
Max. cable length between conductivity electrode and controller: 30 m, with conductivities from
1 to 10 μS/cm: max. 10 m.
Electrical connection
1. Loosen screws
a
.
Fig. 8
2. Remove upper part
c
of the terminal box from the level electrode but leave insulating plate
e
on
contact plate
f
.
3. Remove cover
b
.
4. Press connecting plate
d
out of the upper part of the terminal box
c
.
The upper part of the terminal box can be turned in steps of 90°.
5. Detach cable gland
h
and cable strain relief
g
from upper part
c
of the terminal box.
6. Run cable through cable gland
h
and upper part of the terminal box
c
and wire terminals of the
connecting plate
d
in accordance with wiring diagram
i
.
7. Press connecting plate
d
into the upper part of the terminal box and align cable.
8. Fix cable with cable strain relief
g
and cable gland
h
firmly into position.
9. Replace cover
b
and insert screw
a
.
10. Put upper part of the terminal box onto the level electrode and fix it with screw
a
.
11. If several electrodes are installed in a steam boiler or vessel, please note the type of electrode and
its function on the four-pole connector.
LRG 16-4, connecting the four-pole connector
Attention
Please observe the installation & operating manuals for the conductivity switch
LRS 1-50 and the conductivity controllers LRR 1-50 and LRR 1-52.
Make sure that connecting cables leading to the equipment are segregated and run
separately from power cables.
Check the connection of the screen to the central earthing point
(CEP)
in the control
cabinet.
- continued -
