NBK-M
7. Electrical Connection
7.1. Switch (option)
Connect switch (if available) according to the diagram.
3
1
2
brown
black
blue
With cable connection
Connection box
When switching inductive loads, such as, contactors, relays,
etc, electrical limit values should not be exceeded (even for
short periods) e.g. by voltage peaks. The use of a contact
protection relay is recommended to avoid overloading the
switches.
Valid regulations for hazardous areas and installation
regulations , should be observed when installing the NBK level
indicator in hazardous areas.
7.2. Resistive Level Transducer (option ..W..)
Ensure that the electrical supply lines are de-energized.
•
•
•
•
To avoid faults caused by electrical fields from other circuits, the cable should
not be laid in conduits with power cables cables.
Unscrew cover and pull supply lines through cable gland.
Connect the transmitter to the electronics according to the following table.
Transducer
"top"
Transducer
"bottom"
Variable
Tap
Silicon cable
White brown green
PVC cable
White brown green
FEP cable
Brown blue black
Terminal
box
Terminal 1
terminal 2
terminal 3
Internal*
Yellow red black
*Please note: The colors of internal cables are for internal connections only
and therefore can only be seen in transducers with terminal box.
When connecting transducer to a Kobold transmitter, for example models DFA,
DST or DFM, please read the relevant operating instructions.
NBK-M_manual_3-5-04.doc
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