15
5 Installation
5.1
Electrical connection
• Lay the input, output, and supply lines so they are physically separated
from each other and are not parallel
• If possible, use the CR-4P cable (see Accessories) to connect the
conductivity sensor; do not lay the connecting cable close to components
or lines through which current is flowing
• The cables must have an uninterrupted run (do not route them via terminal
blocks or similar arrangements)
• No other consumers can be connected to the power terminals of the
instrument
• The conductivity sensor is not suitable for installation in areas with an
explosion hazard
• It is essential to comply with the electrical connection instructions in the
operating manual of the transmitter that is being used
• Apart from faulty installation, incorrect settings on the transmitter may also
affect the proper functioning of the subsequent process or lead to damage;
you should therefore always provide safety equipment that is independent
and it should only be possible for qualified personnel to make settings
5.2
Terminal assignment and wiring colors
Incorrect connection of the conductivity sensor will produce
inaccurate measurement results!
Connection for
M12 connector
CR-4P cable
Pin
Assignment
Color
Pt1000 temperature probe
for temperature compensation
1
2
5
GN
YE
BN
Voltage tap inner electrode 2
3
PK
Current entry outer electrode 2
4
BL
Current entry outer electrode 1
6
RD
Voltage tap inner electrode 1
7
GR
NC
Warning: The shielding of the cable has to be connected to the transmitter only – not to the
sensor!
ϑ
1
2
5
1
7
6
5
2
8
3
4