NEK
Seite 4
NEK K05/0516
5. Operating Principle
The Kobold Level Switch of model NEK is a complete functional unit which is
specially designed for monitoring conductive liquids under extreme conditions.
Due to the design without any moving or protruding parts, the switches are very
suitable for monitoring critical media with, for example, solid content, negligible
density or high viscosity. The double-thread allows a variety of installations. The
length of the shaft can be extended by attaching an additional protective tube.
The instruments operate on the conductive principle of measurement. The
conductive medium touches both electrodes causing a negligible alternating
current to flow; the output state changes.
6. Mechanical
Connection
6.1. Check service conditions:
Chemical resistance of materials
Maximum operating pressures
Maximum service temperature
6.2. Installation
Tank installation may be the side or from the top (universal)
Avoid pressure and tensile/torsional stress
Check connections for leakage
7. Electrical Connection
7.1. General
Important! Make sure that the voltages in your plant correspond
with the Level Switch voltages
Make sure that the supply wires are de-energized.
Wire the connection cable to your supply according to the terminal connection
diagrams below.