The level regulator type NR 1/2", 3/4", M20, M24 for tank insert is
a solenoid switch operating without contact with the function
of monitoring and regulating liquid levels and temperatures.
The switching tube contains bistable protective gas contacts,
fixed in position. For fixed contacts, the contact intervals and
their function must be given.
The permanent magnet built into the float switches the contacts
when the level changes. The switching difference (hysteresis)
is 4 mm. For temperature monitoring and regulation, thermal
elements such as thermal contacts or Pt100 / Pt1000
can be additionally incorporated.
The level regulator is maintenance - free when nondeposit media
are used.
For inductive loads, a protective circuit must be provided
(free-wheeling diode/RC element).
The device must only be installed by specialists