The Miniaturized Air Bubble Sensor with an Outstanding Price-Performance Ratio


  • Non-Invasive Measurement
  • Small Compact Design
  • Built-In Electronics, No External Electronic Board Required
  • No Coupling Medium Required
  • No Wear and Tear
  • Optional Software for Parameterization and Testing

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The very compact SONOCHECK ABD07 sensors for contactless air bubble detection at tubes follows the trend for miniaturization and meets the demands of numerous customers. These intelligent sensors can be used for the monitoring of bubbles in fluids, for wet/dry alarm notifications and as liquid level sensors.

The sensitivity of the sensors can be defined according to the type of application. The user is able to specify from which size upwards air or gas bubbles should be detected, simply by using the software available for configuration and test of the sensors. This is a unique feature on the market.

The air-in-line sensors automatically adapt to dynamically changing acoustic conditions. This guarantees a high degree of measurement stability despite fluctuations in the surrounding environment.

In addition to our standard sensors, we also manufacture customer-specific solutions.

Customer Reviews

Jeff Poland, President and CEO at Century HLM, on our air bubble sensors:

“We started with SONOTEC's ABD05 series sensor. After our research and interview process SONOTEC had the only sensor capable of meeting 60601 3rd edition specifications for a fail-safe free hanging non-intrusive arterial line air detector sensor.” [Read More]

Jochen Hübner, R&D and Quality Management Representative at Herrmann Apparatebau GmbH, on our Air Bubble Sensors:

“When searching for a suitable sensor our engineers came across SONOTEC. We chose the air bubble detector ABD06 of the SONOCHECK-series – in a customized version. The small size and the approved safety functions were the main reasons that spoke for the sensor.” [Read More]

Technical Data

Measurement Principle


Bubble Sensitivity

Depends On Sensor Version and Tube Diameter

Response Time

Minimum: <1 ms
Typical: 2ms

Power Supply

+5 ± 0.2 VDC
≤ 20 mA

Operating Temperature

5 to 60 °C




Safety Requirements: IEC 60601-1:222005 (3rd Edition)
EMC: IEC 60601-1-2:2007 (3rd Edition)
Acoustic Output (Ultrasonic): IEC 61157:2007



  • Dialysis and Transfusions
  • Heart-Lung Machines
  • Blood Separators
  • Pumps for Medical Technology (Infusion, Heart, Feeding, Contrast Medium)
  • Diagnostic Systems

Do you have any questions?

Then contact us! We're here to help.

+1 631 / 415 4758
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