Kobold NST Operating Instructions Manual Download Page 4

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 

 

Reviews: