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NST
page 4
NST K06/0422
5. Operating Principle
The float comprises a hollow cylinder or a ball with integrated Reed contact or
microswitch.
The switch is supplied as a changeover contact; it can be connected as a N/O
contact or N/C contact as an option. The contact switches when the liquid passes
above or below the horizontal float position.
The switch point is set either by the side installation of the switch at the desired
height or by clamping the cable. In case of installation from the top, switchpoint
will stabilize itself through the bading weights.
6. Mechanical Connection
Before installation:
Remove the transport locks and make sure that there are no more packaging
parts on the device.
Check whether the maximum allowable operating pressures and temperatures
of the device are not exceeded (see technical data).
If possible, should already be in accordance with the mechanical installation,
check whether the connection fitting is tight.
As contact protection, concerning protection against contact, we recommend our
contact protection relay MSR.
Installation
From the inside via G ½ threaded (only type NSTB)
Externally by means of G 2 fitting
7. Electrical Connection
7.1 General
Attention! Make sure that the maximum voltage power values of
the level switch are not exceeded.
With rising levels:
black/ blue:
NO
black/ brown:
NC