Helping to protect pumps from running dry and detecting even the tiniest bubbles in flow control applications is a good example of where system engineers need to prevent unwanted and expensive downtime due to pump malfunction caused by unwanted gas inclusions. The development of the PAD20 sensor (a finalist in the recent Food Tec Awards) is a good example of the innovative range of sensors available from BAUMER.

This 'smart' sensor helps to protect pumps from running dry whilst also helping to ensure maximum system performance and optimum use of resources. However, the PAD20 sensor is not only good at protecting pumps as reliable detection of gas bubbles also optimises the energy efficiency of cooling and heating systems in industrial applications. The sensor has the ability to measure air in all types of liquids regardless of whether liquids are pasty or viscous, reliably and fast. Another good example is where the sensor has helped a major dairy manufacturer solve the decades old problem of containers not being fully emptied.

In summary, PAD20 sensors are an effective, robust solution for detecting air and gas bubbles in any liquid or viscous media such as fruit preparations, cooling agents (DC>1.5) and particularly in harsh ambient conditions. Switching outputs are individually adjustable with IO-Link (2) for definition of switching range, or two-stage alarms (early warning) and they provide optional multi-colour process visualisation through 360º of switching state.

The nomination of the BAUMER PAD20 'Bubble Sensor' for the 2024 Pump Industry Awards once again recognises the contributions and abilities of sensor specialists Baumer to push the limits of sensor technology. The innovative PAD20 sensor was shortlisted for the international awards in two categories; 'Product of the Year' and 'Environmental contribution of the Year'.

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About Baumer Ltd:
Baumer Ltd is part of a family owned company which operates on a global scale employing around 2400 people in 38 subsidiaries across 19 countries Worldwide. Baumer is acknowledged as a leading supplier of sensors, encoders, measuring instruments and components for automated image processing. Baumer is your partner for, Food & Beverage Sensing, Food & Beverage Processing, Assembly and Handling, Material Handling, Encoders and Motion Control Solutions.

For more information, please contact:

Jon Sumner
Baumer Ltd.
33 / 36 Shrivenham Hundred Business Park, Majors Road, Swindon, UK, SN6 8TZ
Tel: +44 1793 783839
Email: Website:

June 2024

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