TURN YOUR MEASURING SYSTEM INTO AN INSTRUMENT FOR CONTROL


One of the main challenges many manufactur- ers face today is fulfi lling increasingly complex product and quality control requirements while at the same time experiencing a shortage of labor. Improving effi ciency and achieving the highest level of accuracy is not possible without systematic process automation.


As a solution provider for pipe extrusion, automa- tion is therefore our guiding principle.


Combining gravimetry with a measuring system and control technology is the key to increas- ing productivity, signifi cantly reducing costs, and at the same time ensuring the highest level of quality possible.


Furthermore, when raw materials are used effi ciently, you move closer to achieving your sustainability goals and securing your competi- tive advantage for the future.


Weight per meter control via the haul-off


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2 1 THE ROLE OF GRAVIMETRY


Every raw material is subject to fl uctuations in bulk density. Gravimetric weighing allows fl uctuations in mass throughput to be recorded and automati- cally balanced out. In principle, gravimetry off ers two control options: mass throughput control and meter weight control.


Mass throughput control: The extruder speed is adjusted to the material feed into the extruder.


Weight per meter control: The haul-off speed is controlled based on the amount of material fed into the extruder. This keeps the weight per meter constant and eliminates fl uctuations in wall thickness in the direction of extrusion. The smaller fl uctuations also reduce the target wall thickness, saving material.


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