Capacitance limit switch in a pressure feed hopper

Build-up compensation & flexible height adjustment


The challenge was in this application, that the sensor should detect the max alarm in a pressure feed hopper with lime powder. It is extremely dusty. The pressure is up to 5 bar. The reaction time should be quite fast.


The solution is a capacitive sensor of the series  Capanivo® CN 4030 with a 500 mm shaft. The sensor has a sensitivity of DK 1.6 and a reaction time of about 0.5 second. The device configuration is a cost-effective solution and works extremely reliable. With the capacitance products the manufacturing plant has optimized the point level measurement task for a stable process flow.