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Ultrasound Is Our Strength

Founded in 1991, SONOTEC GmbH is one of the world’s leading product and solution specialists for innovative ultrasonic measurement technologies. With about 200 employees and its future-oriented corporate structure comprising three independent business units – Non-Invasive Fluid Monitoring, Preventive Maintenance, and Nondestructive Testing – the technology leader operates its global sales activities from the German headquarter based in Halle (Saale). The distributed portfolio includes ultrasonic transducers and sensors as well as testing devices, and measurement solutions for a number of different industries.

Global Technology Leader in Non-Invasive Fluid Monitoring

The business unit Non-Invasive Fluid Monitoring is specialized in ultrasonic sensor technology in the field of non-contact and non-invasive liquid flow measurement and air bubble detection in flexible tubing and hard plastic pipes. As a global technology leader, we offer excellent product quality, first-class measurement performance and outstanding service to our customers in medical technology, biotechnology, and the semiconductor industry.

In order to guarantee the highest product quality, we are certified according to ISO 9001 as well as EN ISO 13485 and fulfill the directives for the manufacturing of products to be applied in potentially explosive atmospheres according to ATEX/IECEx.

In addition to our off-the-shelf products, we offer customized sensor solutions that meet application-specific requirements.

Non-Contact Liquid Flow Measurement & Bubble Detection for Bioprocesses

Designed to increase efficiency and reproducibility throughout upstream and downstream processes in biotechnology, the non-contact ultrasonic sensors from SONOTEC measure liquid flow fast and highly accurately. With their integrated electronics board, the SONOFLOW and SONOCHECK sensors offer the smallest equipment footprint solution on the market. By using reliable and reusable sensors, process stability according to PAT can be improved, easy data transfer achieved, and costs reduced.

Ultrasonic Clamp-On Flow Meter SONOFLOW® CO.55

The non-contact SONOFLOW CO.55 sensor measures liquid flow rates accurately and reliably in flexible plastic tubing. The clamp-on design and the non-invasive measurement principle ensure contamination-free real-time flow measurement in single-use and hybrid environments. The advantageous sensor series with integrated electronics fits from small-scale low-flow and bench-top applications in the lab to large-scale processes in complex GMP productions.

Product portfolio of non-contact flow meter SONOFLOW CO.55

Ultrasonic Bubble Detector SONOCHECK® ABD06

The contact-free bubble sensor SONOCHECK ABD06 is ideally suited for continuous bubble monitoring and full/empty detection. Dependent on the inner diameter of the tubing and flow velocity, it can detect bubbles as small as 1 μl. The highly accurate sensor is an effective instrument to increase process stability and product quality in bioprocessing applications. For hazardous environments, the clamp-on bubble detector is optionally available with ATEX certification.

Product portfolio of non-contact bubble detector SONOCHECK ABD06




Nauendorfer Str. 2

06112 Halle (Saale)



Phone: +49 345 13317-0