Improve processes in sewage treatment plants with VEGA sensors

It depends, of course, on where the level and pressure sensors are deployed. But no matter if it’s flow in an open flume, a filter or a basin, one thing always applies: The measuring instruments must work accurately and uncomplicatedly, withstand extreme ambient conditions and function for as long as possible without maintenance.
VEGAPULS C 21 has proven itself over and over again in applications where a high protection class is required. The compact radar sensor delivers precise readings and is not affected by 

• temperature fluctuations
• environmental influences like rain, fog or wind
• dirt and contamination

in any way. This gives radar measurement technology many advantages over ultrasonic-based measurement. Due to the good signal focusing of VEGAPULS C 21, the liquid level reflections can be better separated from false reflections, making the measuring results considerably more accurate. Another plus: VEGAPULS C 21, like other sensors of the series, has a fixed cable connection and is designed in protection class IP66/IP68. This enables a direct connection, for example to a PLC.

Sludge container: The accumulated sewage sludge is first dewatered and thickened in large tanks or basins. This reduces the amount of sludge and increases the dry solids content. To ensure optimal throughput, the sludge quantity in the receiving tank is continuously monitored with a continuous level measuring system. Twelve VEGAPULS C 21 sensors measure the sludge levels in different containers. The treated sludge is transported away by truck and recycled in agriculture. VEGA sensors thus make an important contribution to recycling within Walloon Brabant’s wastewater management regime.

InBW also relies on VEGA instruments in this area of wastewater management. VEGADIS 82, for example, allows easy reading of the measured values. Thanks to its robust field housing, it is perfectly suited for use in rough environments. The VEGASCAN 693 controller for up to 15 sensors enables the recording of 200,000 measured values for instruments with digital interface. In this way, data from level, gauge and process density measuring systems can be clearly bundled and used for control systems and visualisations and sent by e-mail or SMS.
Those responsible at InBW applaud the efficiency, simplicity and versatility of VEGAPULS C 21. The ability to adjust the VEGA instruments via Bluetooth or to calibrate the sensors makes the everyday work of the sewage treatment plant employees much easier – especially in overcoming the great distances.