Firmenprofil

SONOTEC Ultraschallsensorik Halle GmbH


Founded in 1991 and headquartered in Halle (Saale), Germany, SONOTEC focuses on the worldwide distribution of ultrasonic solutions. With a strong R&D department, consisting of experienced engineers and scientists, SONOTEC is capable to react fast to customer needs and stands for top quality “Made in Germany”.

The ultrasound specialist develops, produces and distributes non-invasive systems for medical technology, the bioprocessing industry and the laboratory sector such as air bubble detectors with micro bubble sensitivity, flow meters – optionally with integrated bubble detection, level sensors as well as blood leak detectors. Unlike all other sensors on the market the complete electronic signal processing unit is integrated in the body of the sensors, therefore another external electronic board is not required.

Non-Invasive Sensors for Air Bubble Detection

The non-invasive air bubble sensors of the SONOCHECK series detect air bubbles in fluid-filled tubes quickly and reliably. The ultrasonic sensors are also used for liquid level monitoring as well as for full/empty detection. They have no problem adapting to dynamically changing acoustic conditions, therefore the sensors ensure a high degree of reading stability with respect to fluctuating ambient conditions. The clamp-on sensors have a user-specific programmable micro-controller with extendable functionalities, for example fail-safe and serial communication.


The SONOCHECK ABD05, ABD06 and ABD07 clamp-on ultrasonic sensors quickly and reliably detect air bubbles in fluid-filled tubes and measuring chambers.

Clamp-On Sensors for Flow Rate Measurement

The flow sensors of the SONOFLOW series are designed to rapidly and reliably monitor flow rates of liquids in plastic tubes – such as PVC, silicone, PFA, PTFE, etc. As a clamp-on device, the ultrasonic flow sensor SONOFLOW CO has no contact to the medium being monitored, making it particularly well-suited for applications where strict hygienic standards are required and, thus, eliminating any risk of contamination or leaking. Different housing materials, such as aluminum, stainless steel or plastics, are also available. 

Besides multiple off-the-shelf standard sizes, SONOTEC also offers a non-invasive ultrasonic sensor that unites flow metering and air bubble detection in one device. The combined flow-bubble-sensor measures the flow of liquids in tubes and detects air bubbles simultaneously. The handling of the sensor is remarkably easy as the tube is simply clamped into the sensor without the need for coupling medium.


The contactless ultrasonic flow sensor SONOFLOW CO.55 monitors the flow rate of liquids in plastic tubes quickly and reliably.


The clamp-on ultrasonic sensor SONOFLOW CO.56 combines two measuring techniques in one compact device: air bubble detection and flow metering.

Contactless Sensors for Level Measurement at Drip Chambers

The contactless drip chamber measurement device SONOCHECK ALD can be configured for duel level and single level monitoring. The ALD01 is designed for the precise detection of one defined liquid level. The ALD02 detects the exact liquid level between a defined minimal and a maximum value. Used in many medical applications, the clamp-on sensor has unique integrated electronics that ignore constant drips but give a highly accurate reading.

The drip chamber sensor SONOCHECK ALD02 with two measuring points detects liquid levels between a defined minimum and maximum value.

Optical Sensor for Blood Leak Detection

The blood leak detector BLD is a non-invasive, optical sensor, developed to detect smallest traces of blood in air or in clear fluids. The clamp-on sensor was designed for medical devices, such as dialysis machines, but is also able to detect any change that affects the light transmittance of an optically transparent medium.

The non-invasive, optical sensor BLD detects smallest traces of blood in air or in clear fluids.

Software for Easy Parameterization and Testing

As for all sensors described above, an advanced easy to operate software, is offered as an optional tool by SONOTEC. The additional software provides unique flexibility to adapt the sensors to different customer requirements. All sensor parameters, including thresholds, output settings, sensor type, revision and serial number, etc., can be read with the help of the software. In order to protect the sensor against unintended modifications, it is possible to activate a CRC check.

Sensors for Custom-Specific Solutions

SONOTEC offers customized solutions besides numerous standard sensors for medical, bioprocessing or industrial applications. The manufacturer is able to integrate particular features that are requested by the customer. The sensors’ design, interfaces and features – such as safety routines or power supply – can be customized application-specific.

We are specialized in developing and producing the right ultrasonic sensor for every application. Please contact us to discuss your project. We look forward to hearing from you.