Trust is good – control is better – Glass Level Controllers
Glass production demands the precise control of the glass level. For this, we offer two variants for observing with maximum accuracy a specified glass level , as well as with mechanical (for containerglass furnaces) and optical (for floatglass furnaces) measurements:
Contact person:
Marco Füger
Special field: Factory Cullet Recycling, Sales Department Single Machines
Mechanical glass level controller for containerglass furnaces
The glass level controller is available in two versions: As BZ 24 S/H with water-cooled electrode for being installed directly at the furnace for scanning through the side wall or as BZ 24 S/V with ceramic electrode for being installed at the feeder for scanning trough the feeder.
Benefits of mechanical glass level measurement
Fully digital processing of measured values
Parameterization of the controller in dialogue via control unit or web interface
Text display of the controller status
Integrated proportional regulator useable for feeding control. Optional bus connection to higher-level control possible
The operation and display part as well as the line recorder can be installed in a control cabinet located in the furnace control room (independently from the controller)
Reliable mechanical equipment, low maintenance
The new version of the glass level measuring system BZ 24 is controlled by a new electronic device with advanced interfaces. The parameter settings can be changed by the keyboard or alternatively via web-interface. The glass level trend can be visualized in internet browser and the current settings can be stored on computer or notebook as backup. As option, there are network interfaces available to establish a data exchange to different types of PLC. The available protocols are Profibus, Profinet, Ethernet/IP and Modbus/TCP.
A halogen light source (projector) sends a light beam onto the glass surface in the melting furnace where this beam will be reflected, collected by a receiver and evaluated in an electronic unit.
Alterations of glass level height will cause parallel displacement of the reflected light beam, which can be used as evaluation signals.
Benefits of optical glass level measurement:
No operational license required as necessary for radiometric glass level controlling
No mechanical wear, because touchless measuring system
Water cooling is not necessary
Easy installation, also for refurbishing
No point measurement, but an area measurement across approx. 30 cm2 in order to relativize uneven surface
Wide light spectrum – independent from glass colours
