Preventive Maintenance with Ultrasound

In most factories, regular preventive maintenance is performed to reduce machine failures, increase plant availability and to save energy costs. With the multi-purpose ultrasonic testing devices of the SONAPHONE family, many of these tasks can be carried out quickly and efficiently. The operation is simple and extensive trainings are no longer needed. 

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The SONAPHONE devices detect leakages in compressed air, gas and vacuum systems. They reliably inspect bearings, the functioning of valves as well as steam traps and detect electrical partial discharges on medium or high-voltage equipment. By applying an ultrasonic transmitter the SONAPHONE devices can also be used for tightness testing of cabins, hatch covers, containers and other unpressurized systems. 

Ultrasonic Testing Devices for Predictive Maintenance

Steam Trap Testing SONAPHONE


Digital Ultrasonic Testing Device for Maintenance 4.0

Preventive Maintenance Software DataSuite


Software Environment and Application Apps

acoustic camera sonascreen for preventive maintenance


Acoustic camera for leak detection and electrical inspection

acoustic camera sonascreen for preventive maintenance


Acoustic camera for leak detection and electrical inspection


Acoustic Thermal Imager for Preventive Maintenance

Leak Detection SONAPHONE Pocket


Compact Ultrasonic Testing Device for Preventive Maintenance



Adjustable ultrasonic transmitter for the reliable detection of leaks

Preventive maintenance Transducer T10 T20

Ultrasonic Transducers

For Preventive Maintenance

Preventive maintenance S SB10

Sensorbox S-SB10

Stationary Sensorbox for Online Monitoring of Processes and Machines

E-Learning Plattform

On-Demand Onlinekurse I Ultraschall in der vorbeugenden Instandhaltung

Applications for Preventive Maintenance

Ultrasonic leak detection with SONAPHONE and BS10 sensor

Ultrasonic Leak Detection

Reduction of Energy Costs for Compressed Air by up to 30 Percent

Ultrasonic Sensor BS40 Preventive Maintenance


Recognize Bearing Damage early and optimize Bearing Lubrication

Machine inspection



Stationary condition monitoring of machines, systems, and processes.

ultrasonic steam trap testing with ultrasonic testing device sonaphone

Steam Trap & Valve Inspection

Reduce Energy Costs for generating Steam by up to 20 Percent and increase Process Stability

Electrical inspection for partial discharge with parabolic sensor and ultrasonic testing device


Detect Partial Discharges at an early Stage and increase operational Reliability

Ultrasonic tightness testing at a car with ultrasonic testing device and sensor

Tightness Testing

Detection of Leaks & Seal Failures on Windows, Doors, Cabinets, Vehicles & Containers

Press Releases

Data acquisition at the disc dryer

Success Story: SONOTEC X PD Energy GmbH

“Low-speed machines like our sewage sludge dryer are difficult to monitor with vibration measurement…

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SONOTEC Preventive Maintenance SONAPHONE Distributor Days

Bringing together our international SONOTEC distributor family in Halle (Saale)

From March 20 to 23, the Preventive Maintenance Business Unit hosted SONAPHONE DISTRIBUTOR DAYS. We…

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maintenance meets!

September 28-29, 2023 - Munich

Visit us at booth 06 at the industrial maintenance conference and networking event!

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For more information regarding applications and pricing, please feel free to contact us.


Do you have any questions?

Feel free to contact us! We will be happy to help you.