New ultrasonic air bubble de-tector 300 µm AD-102

AMSYS GmbH & Co. KG, Mainz, November 2024 – For 25 years, AMSYS has been advising customers on the use of sensors for industrial and, increasingly, medical applications. With the AD-102, the Mainz-based sales company now offers a high-precision air bubble detector. This is used to detect an interruption in fluid flow in applications such as infusion pumps, hemodialysis, blood flow monitoring, but also in 3D printing and food processing.

The compact AD-102 air bubble detector (ABD) is used for non-invasive, continuous monitoring of liquids to detect air bubbles. The AD-102 can clearly detect even the smallest air bubbles of only 25% of the hose diameter and its signal can stop the supply within 0.5 ms. The air bubble detector is available as standard for hose diameters of 6 mm. Versions for hose diameters from 3 mm to 10 mm are also available on request. This allows air bubbles with a volume of just 0.5 µl or 300 µm radius to be detected.

Sensors used for medical applications must be highly accurate, reliable at all times and resistant to external influences. High demands on sensors place high demands on sensor manufacturers. AM-SYS GmbH & Co. KG has been working with selected sensor manufacturers such as TE Connectivity for 25 years in order to be able to detect the smallest air bubbles or interruptions in liquid flow with this new ultrasonic sensor.

Outstanding features 

• Detects air bubbles with a size of up to 25% of the inner hose diameter
• Input: 5 VDC
• Output: 5.0 V TTL logic 
• 6 mm outer hose diameter as standard (the sensor can optionally be adapted to outer hose diameters between 3 and 10 mm)
• Temperature range: 0°C - 60°C 
• Response time: 0.5 ms 
• Extended self-test (interrogation plus continuous check)
• Non-invasive design eliminates sterility and fluid compatibility issues
• High noise immunity to EMI/RFI
• No acoustic coupling agent required 
• Integrated electronics 
• LED indication of sensor status visible through the housing

Applications

• Infusion and syringe pumps
• Apheresis/autotransfusion 
• Biotechnology/DNA analysis
• Blood processing 
• Immunoassay 
• Chemical analysis • Hemodialysis
• IN-VIVO- detection of gas
• Hydroponics
• Smart Farming
• Food processing
• 3D printing

Company

AMSYS GmbH & Co. KG is a medium-sized company based in Germany and has its focus on the field of sensor technology. As a distributor for sensors, AMSYS is one of the specialists in pressure measurement technology on the German-speaking market.

The product range extends from piezoresistive pressure sensing elements, simple SMD mountable transducers, amplified/unamplified and matched OEM sensors, PCB modules, to ready-to-use pressure transmitters.

AMSYS offers sensors and pressure cells in the pressure range from 1.25 mbar up to 800 bar. In addition to a wide variety of pressure sensor types, AMSYS also offers OEM humidity sensors, temperature and inclination sensors, and wireless Bluetooth solutions.

Due to the technical competence of the employees and the good contact with suppliers, customer-specific modifications of the standard products can also be offered, allowing individual problem solutions. Further information can be found on www.amsys-sensor.com.