Airborne sound sensor BS10 for leak detection and electrical inspection


  • Frequency range: 20 to 100 kHz
  • Pinpoint leakages and partial discharges over distances up to 8 m
  • Applications (depending on the app): Detection and evaluation of leaks in compressed air, gas and vacuum systems, Verification of leaks in windows, doors, vehicles or containers, Detection of electrical partial discharges and insulation damage
  • Including target laser and LED lamp

Get A Quote

The BS10 airborne sound sensor with accessories for different testing work has been specially designed for the following tasks:

Detection and evaluation of leaks in compressed air, gas and vacuum systems (depending on the app)
Tightness Testing of windows, doors, vehicles or containers (in combination with the SONAPHONE T ultrasonic transmitter)
Detection of electrical partial discharges and insulation damage

Frequency range 20 to 100 kHz

Simultaneous analysis of the ultrasound frequency range between 20 to 100 kHz

The target laser helps with the precise location of damaged areas:

If the sensor points towards the damaged area during the search, the precise location can be detected by means of acoustic signals, by pivoting the sensor and searching for a local maximum sound level. The target laser marks the approximate position of the damaged area.

LED light

The LED light serves as a torch, making it easier to search for damaged areas in poorly lit environments.


Small acoustic horn BS10-2

Attachment for BS10 airborne sound sensor
Range up to 3 meters

Precise locator BS10-1 (optional)

Applications: Precise location of damage areas in the vicinity

Large acoustic horn BS10-3 (optional)

Application: Location of damage areas at large distances up to 8 meters

Technical Data

Airborne sound sensor

Device design

Sensor for detection of air ultrasound signals incl. target laser and LED light


Via keys on sensor or via SONAPHONE touchscreen
start/stop measurements
LED light

(W x H x D)

30 x 155 x 30 mm


80 g

Temperature range

Storing temperature: -20 to +60 °C
Operating temperature: -10 to +40 °C 

Protection class


Frequency range

20 to 100 kHz


1 dB


Cable connection to SONAPHONE
Length coiled cable: 160 cm


Interchangeable attachments to increase the signal strength: Small acoustical horn for close range, large acoustical horn for long distances, attachment for precise localization of defective parts