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The Friedrich Köster GmbH & Co. KG Maschinenfabrik-Eisengießerei in Heide manufactures castings of iron, steel and non-ferrous metals, sometimes in small batches, sometimes as individual castings of various sizes. The foundry sand required for this is transported, still hot, to large silos after use. Here it is stored and cooled until it is needed again for further processing steps. In order to reliably measure the level in the silos and thus their total content, reliable level measurement is required.

Until now, guided radar sensors were used for this purpose. These old sensors, however, intermittently failed to transmit the measurement signals: Due to the very long cable probes, they had difficulties measuring in the sand and sometimes even stopped working completely. The necessary repairs could only be carried out when the silos were empty. This was not only inconvenient, it also caused delays in the production process again and again.

VEGAPULS 31 radar sensors measure contactlessly with the high frequency of 80 GHz. They now ensure longer operating times in the foundry. Thanks to the new measurement technology, malfunctions almost never occur, and the high temperatures in the hot sand silo do not affect the measuring results of the robust sensors.

Exact measuring results even in applications with dry, hot bulk solids.