Broadband parabolic sensor for leak detection and electrical inspection up to 35 m


  • Detects ultrasonic frequencies from 20 to 100 kHz
  • Scanning range up to 35 meters 
  • Applications: Leak Detection, Tightness Testing, Electrical Inspection 
  • Reliable direction finding with integrated target laser and adjustable red dot sight 
  • High directivity and sensitivity 
  • Insensitive to background noise within the audible range 
  • Ergonomic and lightweight 

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The BS30 parabolic sensor has been specially designed for the following tasks:

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

Scanning range 35 meters

The parabolic sensor is used for the accurate detection of ultrasonic waves over distances of up
to 35 m.

Frequency range 20 to 100 kHz

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

Target laser and red/green dot sight

The target laser and the red/green dot sight also help with the precise location of damage
areas. If the sensor points towards the damage 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 and the red/green dot sight highlight the position of the

Technical Data



Sensor with parabolic reflector for the detection of airborne ultrasound signals at distances of up to 35 m, target laser (class 2) and red/green dot sight


Via buttons on the sensor or on the device:
Start/stop testing │ Laser on/off (press and hold button)

Frequency range

20 … 100 kHz

Measurement resolution

1 dB

Power supply and communication

Cable connection with the SONAPHONE (160 cm): LEMO connection

Dimensions (W x H x D)

270 x 440 x 390 mm (when assembled)

Reflector diameter

270 mm


750 g


Sensor: Aluminum, polycarbonate, ABS

Ambient Conditions

Operating temperature

-10 °C … +40 °C

Storage temperature

-20 °C … +60 °C

Protection type


Standards and guidelines

EMC Directive 2014/30/EU; WEEE Directive 2012/19/EU;
RoHS Directive 2011/65/EU; ASTM E1002-2005

Sensor accessories:

Light spot target device, transport case

Optional accessories

Sensor cable

Target Laser

Wavelength λ

630 … 680 nm

Laser dot size

< 20 mm at 10 meters


2 mrad (divergence angle: 0.11°)