CABIN-SAFE™ Ultrasonic Leak Detecting System

Overview of the CABIN-SAFE™

The CABIN-SAFE™ is perfect for detecting the source of leaks in any small enclosures, fuel tanks, leisure craft, yachts, cars and caravans. To use the Cabin-Safe, the transmitter unit is placed inside the vessel and the Sonic Leak Detector (SLD) is used to inspect seals, doors and windows on the outside for finding holes or places of potential water ingress. Ultrasound will be detected on the exterior if a hole is present in the structure or seals. Any holes may lead to water ingress..


CABIN-SAFE™ Applications

Testing the weather tightness of

  • Yacht cabins
  • Windows
  • Caravans
  • Hatches
  • Cars

Checking for holes in

  • Ship Containers
  • Fuel Tanks
  • Refrigeration Units
  • Double Glazing

The Complete CABIN-SAFE™ Boat Kit includes


• CABIN-SAFE™ transmitter unit 110x70x34cm

• Hard hat compatible headphones

• Full operating instructions

• Sonic Leak Detector (SLD) receiver 19x9x6cm

• Foam-lined black polymer carry case 220x200x80cm

• Operational Weight: 400g: Shipping weight: 550g

•4 x 9v PP3 batteries

• 3 year warranty



CABIN-SAFE™ is a lightweight ultrasonic system used to detect holes. The complete system is contained in one carry case
for convenient transportation. The complete weight of only 550g, including the batteries, makes it suitable to be carried as
hand luggage on aircraft. The CABIN-SAFE™ is very simple to use and requires no training to operate.



• can locate holes with pinpoint accuracy • does not interfere with other crew activities.

• causes no damage to interior of vessel or vehicle • can be conducted in sub-zero temperatures

1. The Cabin-Safe transmitter is placed inside the container, vessel or vehicle; the magnetic base can be used to hold the transmitter in a convenient place. The unit is switched on, the green led will flash.

2. The headphones are plugged into the SLD receiver, the trigger turns on the SLD and the laser will shine out of the tube. The tube often referred to as the nose, is there to direct the sound into the internal microphone.

3. The surveyor begins to inspect the vessel or vehicle, moving the SLD across the exterior of the vessel. Any gaps through which air or water can pass, will allow the ultrasonic signal to pass and can be detected.

4. Any ultrasound that can escape to the outside is converted to an audible sound, which can be heard through the headphones. The louder the sound, the larger the leak.

The SLD used on its own allows the rapid detection of pressurised gases escaping from any form of plant system. The ultrasound “noise” generated from any gas e.g. compressed air, steam, refrigerant or vacuum, bad bearings and electrical arcing can be easily detected and the leak location rapidly and accurately identified through the headphones.

The SLD can significantly reduce leak detection times and produce substantial cost savings.


Savings potential in compressed-air plants

In many companies, compressed-air systems have leaks in the ducts, couplings and hoses (leakages of 30% and more are not uncommon). This results in significant costs for the company. Moreover, additional unnecessary maintenance measures are required for the compressor and the compressed-air processing. The following example clearly shows the financial consequences of smaller leaks (acoustically hardly perceivable by the human ear). Average operating costs for compressed air costing 0.02 EUR/m³ at 7 bar; per year, see chart below


American Bureau of Shipping Classification Society Manufacturing Process Approval
ISO 9001:2015 Certificate Number 14124458
NATO Stock Number 6635-99-883-3612
NCAGE Number U0B22
IIMS Corporate Membership Number C508

Class Instrumentation Ltd

837 Garratt Lane, London, SW17 0PG, United Kingdom

T +44(0)20 8333 2288


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