Ultrasonic watertight integrity & hatch cover tester

The Portascanner® Watertight is an ultrasonic watertight integrity tester, indentifying leaks in a wide variety of watertight, airtight or weather-tight seals including hatch covers, watertigth doors and multiple cable transits.
P/N: 509004-0311
NSN: 6625-99-257-8336
IMPA MSG P/N: 652778

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Ultrasonic watertight integrity tester


The Portascanner® Watertight is the world leading method for testing a wide variety of watertight seals to identify the exact location of leak sites quickly and easily. Coltraco Ultrasonics first pioneered the technology nearly 30 years ago and have been at the forefront ever since.

We always aim to make our equipment as simple and easy to use, making it ideal for use by crew as well as Surveyors or experienced NDT specialists. Typical testing examples include:

  • Ultrasonic hatch cover testing – mainly used for testing bulk carrier hatches, the Portascanner is onboard most of the leading bulk carrier operators and traditionally used by crew prior to departure to ensure the seals are secure and thus the vessel, crew and cargo are safe. Regular use will result in drastically reduced cargo claims.
  • Watertight or Weathertight doors – Whilst testing doors has a slightly different testing protocol, the same basic unit configuration can be used. Any different door style can be tested and is an especially popular application among safety critical environments such as Naval or Oil&Gas platforms.
  • Multiple Cable Transits (MCTs) – Testing MCTs for secure seals is an area of increasing awareness in numerous industries. With few alternative methods, the Portascanner has been perfected for use in such environments.

The Portascanner offers a more accurate and reliable alternative to chalk testing and a cleaner and more efficient alternative to hose testing. Both these methods can only identify very substantial leaks and are highly dependent on the tester. The Portascanner removes subjectivity by identifying any leaks that exist and will find problems always missed by both methods. With the Portascanner able to identify leaks as small as 0.06mm, it is the most precise unit available on the market.

The Portascanner® comes with many unique features:

  • Magnetically positioned generator – place the generator on any magnetic surface for perfect & convenient positioning. Ideal for bulk carrier testing as removes the need to place generator on the tank top and makes testing Doors & MCTs much easier.
  • Range of 100m – Meaning the device is capable of testing even the largest bulk carriers. Multiple generators can be used simultaneously for challenging spaces.
  • Dual measurement units – Can be used in either with the linear numerical display or in decibels depending on the application
  • Highly intuitive to use – Easiest unit to operate effectively in the market and ideal for use by crew. Minimal training required for effective use and video training available
  • Handsfree use – with eyelet to attach hanging strap to allow users 2 free hands to work with
  • Technical Support – Provided one-on-one free of charge, with video material, over the telephone, video call or email.
  • Warranty – 3 year warranty covering any manufacturing defect with full replacement in the event of failure

What's in the box

How to use

Place the generator on one side of the seal and turn it on. This will fill the space being tested with a specific ultrasonic frequency.

To find out more, see this video

If testing on a hatch cover or watertight door, close and seal before commencing inspection

With the user and receiver on the opposite side of the seal, scan the sensor around the edge of the seal being tested.

portascanner watertight multiple cable transit door

Listening in the headphones for quick identification and looking at the display for closer inspection, identify areas where the signal is strongest to identify leaks and mark for repair. See example below

Once repair work is complete, repeat testing until seal is secure.

To understand the process in more detail, please see this video – Portascanner Operation

Techical specifications


215mm x 82mm x 30xx

420 grams



0.06 mm +/- 0.02mm


310 mm (lenght) x 25 mm (diameter), connected by BNC connector to 1m length co-ax cable 

Receiver Readings

Visual – via LCD display & graph

Audible –  via external headphones 

Results shown in decibel (dB) and linear readings 

Operating Temperatures

-20C to 70C / 68F to 158F


Membrane control operated, LCD back-lit measuring 55mm x 28mm


Generator – 2 x PP3 9V batteries (12 hours continuous use)

Receiver – 1 x PP3 9V battery with low life indication (10 hours continuous use)


ABS Type Approval

RINA Type Approval 

IRS Type Approval

ExVeritas ISO 9001 

Made in UK, compliant to ISO 14001 and ISO 9001:2015

Enclosure Rating



  • Main unit – 3 Year Warranty 
  • Sensor –  1 Year Warranty 
  • Technical Support – Lifetime of the unit


Download Portascanner Watertight brochure

For basic product information, please find below. If you have any other questions, please contact us directly.


Frequently asked questions

What materials can the Portagauge 5 test?

The portable ultrasonic thickness gauge can test any type of metal and most hard plastics. The most popular metals include steel, aluminium, copper and popular plastics include PVC, Polyethene and fibreglass to name a few!

How accurate is the Portagauge 5?

The Portauage 5 is accurate at testing true material readings (ignoring surface coatings) to within 0.01mm

How to test sprinkler pipes?

The Portaguage 5 can be used to test any sprinkler pipe or other metal piping to identify areas of corrosion, locations where there has been considerable erosion, areas of fungal deterioration and other forms of metal ware. The testing process involves carrying out a series of spot checks along the bottom of the pipe. It is on the bottom of the pipe where liquid will naturally pool and thus where you are much more likely to have areas of heavy corrosion. The user simply goes down the entire length of the sprinkler pipe and continually monitors the pipe thickness and the waveform. Both should be consistent along the full length of the pipe. As soon as the thickness or the waveform begin to deviate significantly, (and they will normally do so together) the equipment has identified an area likely to be compromised and thus further physical & visual inspections will be required.

Do I need training to use the Portagauge 5?

This equipment is incredibly easy to operate, and no dedicated training is required in order to use the unit. We provide operating instructions which is normally enough to provide an operator with confidence and the required knowledge. However, every Coltraco unit comes with free technical support for the lifetime of the equipment so if you do need any further assistance, our technical team are on hand to support

How long does it take to deliver the portable thickness gauge?

These units are almost always available ex stock from the UK. Delivery to the UK is normally next day, Europe in 2 – 3 days and most of the rest of the world in 3 – 4 days from order. Please contact our sales team for an update on availability and for any other questions.

I don’t need to ignore the paint layer. Will this still work for my needs?

The short answer is yes and normally triple echo thickness gauge technology can be used for any thickness measuring applications. We do also offer our Portagauge 3 technology however which uses single echo technology and will measure paint & material as one reading.

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