Bubble Detection Baumer PAD20 has a trick up its sleeve

Milk poured quickly into a glass tends to form bubbles on the surface due to its surface tension which is different from that of water. Not only milk, but also milk tea and lattes are prone to form such bubbles, which on the surface are harmless, but if they occur in industrial filling, they can cause difficulties in the detection of the sensors and thus induce problems such as idling and stoppage of the conveying pumps.

Baumer has solved this problem with the introduction of its innovative PAD20 series of sensors, which detects very small air bubbles, thus avoiding idling and downtime.

For this reason, it has been awarded the Dairy Technology Award 2021 in the Environment and Sustainability category. The sensor has been proven in numerous applications to increase plant efficiency while ensuring excellent process reliability and quality.

Precise and reliable measurement

With its innovative operating principle, the PAD20 is ideal for monitoring heating and cooling systems in mechanical engineering. The sensor detects air and gas bubbles that can directly impair the performance and functionality of the equipment, ensuring process stability while improving system efficiency.

The PAD20 sensor was originally developed by Baumer at the request of a customer in the food and beverage industry. The customer wanted to prevent equipment and pumps from idling when changing containers. At the same time, they wanted to completely empty transport containers with fruit juice concentrates to avoid wasting resources.

The PAD20 sensor detects very small air bubbles during the dosing of the juice concentrate and thus determines the optimal time to change the container.

Product features

1. PAD20 independent of the medium, both liquid and viscous media can cope freely, its flexibility is very high, can be individually set switching action interval, choose to send an alarm signal when the defined switching point is exceeded.

2. through the graphical parameter setting software can be intuitive, fast commissioning.

3. the sensor can detect liquids with a dielectric constant higher than 1.5. the detection performance is not affected by the medium, which greatly improves the flexibility. With two individually defined switching ranges, the user is able to optimise and adjust the sensor to the process requirements.

4. In addition, the PAD20 also enhanced the digital function of the connection, with two individually adjustable switching output signals, through the IO -Link signal to set the switching action interval or double alarm (including warning).

5. An optional multi-coloured status indicator KingCrown with 360° visibility is also available for displaying various switching states.

Accelerate the process industry

Accurate detection of tiny air bubbles in materials has always been a difficult problem in the process industry, Baumer PAD20 as a generation of innovative sensors, significantly reducing the risk of equipment downtime, but also save the production line operation and maintenance costs, for process industry engineers through digital means to implement cost-effective process control provides an excellent choice.