Capacitive bubble sensor technology

In many industrial applications, it is important to precisely monitor the constant flow of liquids. Unwanted air bubbles in the liquid flow are problematic, as they can have a negative impact on processes or cause damage. EBE sensors + motion offers a new solution for this with capaTEC® technology. The capacitive sensors detect air bubbles in liquids simply, cost-effectively and highly efficiently, thereby addressing a key challenge in the industry.

The new bubble sensor from EBE is able to reliably detect air bubbles and liquid breakages - regardless of the liquid and the condition of the hose. Even with mechanical tolerances or changing hose sizes, the sensor's detection performance remains constant, making it a robust and flexible solution for a wide range of industrial applications. By using the innovative capaTEC® technology, the sensor impresses in demanding environments such as food production, the pharmaceutical and chemical industries and process automation.

Capacitive bubble sensors are based on the measurement of capacitance changes caused by the different permittivity of air and liquid. They are usually used for level detection, but EBE's capaTEC® sensors are also ideal for detecting air bubbles in hoses and non-metallic pipes. When an air bubble passes the sensor, the electric field changes and the sensor detects the bubble precisely and reliably. Compared to conventional ultrasonic sensors, however, capacitive technology is significantly cheaper to purchase and less sensitive to mechanical tolerances. The capacitive sensor shows its strengths particularly with mechanical play and variable hose thicknesses. In addition, it does not require a specially adapted housing, which not only reduces the complexity of installation, but also makes it easier to use in a wide variety of applications. In contrast to optical sensors, which only work reliably under specific conditions - such as with transparent hoses and liquids - the capacitive bubble sensor can be used regardless of the color and transparency of the medium. "Our new capacitive bubble sensor is a real alternative to established technologies and offers high reliability at an attractive price," explains Armin Wellhöfer, Managing Director of EBE sensors + motion. "Its tolerance of mechanical inaccuracies, which are unavoidable in many industrial processes, is particularly noteworthy. The capaTEC® technology enables us to offer a robust and flexible solution here."

With this development, EBE offers a reliable and economical solution for applications in which the detection of air bubbles is crucial. In processes where liquids are pumped through hoses, air bubbles can lead to malfunctions. The capacitive bubble sensors provide accurate monitoring of the constant flow of liquid in the process, ensuring reliability and quality in the application. The sensors are used in a variety of industries, including food and beverage production, pharmaceutical and chemical processes and general process automation.

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