The level regulator type NRA - BLA - G1/2" consists of a surface mounting
tank with inspection glass for the installation of a level regulator.
The level regulator type NR 1/2" 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.
For visual inspection, a level indicator A=127mm as well
as a ventilation filter is attached.
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