Level Control Units
level controls are employed for the automatic vertical and
position control of clamping plates, foundations and other
seismic masses. These turn the air spring suspension into
a functioning system.
supply a mechanical level control of type MC 300 and electrical
level controls of types LC 300 and LC 302.
controls mainly consist of the appropriate control unit, three
level control cabinets with level control valve and control
rod as well as applicable hoses and fittings and additional
level control unit distributes the incoming compressed air
to the three spring assemblies to be controlled. Pressure
gauges show the inlet pressure and the three system pressure
values. The airflow is controlled by an adjustable choke and
monitored by way of a pressure switch. A water separator and
a filter element clean the supply air.The position of the
seismic mass is monitored and automatically controlled with
the help of the control rods and level control valves of the
three level control cabinets. Possible reduction and repositioning
of the mass mounted on the foundation is offset in this way.
Three ball valves allow the manual ventilation and evacuation
and related lifting and lowering of the seismic mass.
Correct positioning of the seismic mass is displayed on the
level control unit LC 300 by means of different colour LED's.
The vibration foundation is raised or lowered with the help
of a key switch. As soon as the horizontal position of the
foundation has been attained, the control closes the control
valve and the control process is completed.
The electrical level control unit LC 302 mainly has the same
functions as the LC 300. However it additionally allows the
adaptation of the seismic mass to the respective test frequency.
To this end it is equipped with another key switch for changing
over the natural frequency of the air spring suspension.
control valve NRV - 0.1
The level control valve NRV -0.1 is a mechanical working relief
>> NRV - 0.1)
Unit DC 300
Our pressure control DC 300 serves to regulate the pressure
of air springs which carry a clamping plate or a concrete
foundation. It is recommended in case the level of the seismic
mass is only of smaller importance. This control can only
be applied for air springs of our BZ-line though.
>> DC 300)