Portascanner® AIRTIGHT is our most advanced ultrasonic room integrity testing tool, contributing to optimal airtightness. Portascanner® AIRTIGHT locates and quantifies even the smallest of leaks and can automatically analyse and consolidate this data, to present these results as indications of a room’s airtightness. This allows for quick testing with extreme precision for applications in the construction, maintenance, or medical fields.

P/N: 509004-AT
CAGE Code: KD983 – COLTRACO LIMITED
Coltraco Ultrasonics’ Portascanner® AIRTIGHT is the only instrument that gives you confidence to find, fix and seal air leaks with pinpoint accuracy, providing true insights and certainty for building airtightness, simply and quickly.
Portascanner® AIRTIGHT’s ultrasonic operation allows it to detect leaks as small as 0.06mm in diameter and quantify leaks as small as 0.5mm in diameter. Portascanner® AIRTIGHT’s computer can detect and collate data from multiple leaks in a single test which reduces the amount of tests which must be conducted in the case of multiple leaks. This makes Portascanner® AIRTIGHT’s ability to test the airtightness of a room industry-leading, and its quick and easy testing process establishes Portascanner® AIRTIGHT as the ideal tool for airtightness testing in Net Zero and Passive House construction projects.
| For Construction Industry | For Airtightness Testers | For Medical Facilities |
| No pressurisation air movement, or temperature differentials needed to detect leaks | Can be used before, during, and after a Door Fan or Pulse Test. | Occupants, visitors, and staff may remain on the wards whilst testing is conducted. |
| Air leak tests can be conducted, before, during, and after the Build Programme. | Ease of use. Lightweight, ergonomic, handheld, battery powered. | Verify that positive and negative air pressure ventilation techniques are working efficiently and effectively. |
| Undertake a Passivhaus, or equivalent, project, with the certainty of passing the mandatory Door Fan Test. | Objective timestamped instant reports of leakage | Reduce airborne infection contamination |
| Any competent person can be trained in minutes. | No need to interrupt the execution of the Build Programme. | Reduce unwanted noise and pest infestation. |
| Camera and reporting on the device for easy tracking of leaks in a multi-family building | No need to chase leaks with a smoke pencil | Increase fire safety with improved compartmentation. |
| Precision made components and volumetric modular solutions can be factory tested. | Instantly detect and locate air leaks as small as 0.06mm. | Improve energy efficiency |
Unlike Thermal Cameras, Anemometers, and Smoke Pencils, the Portascanner® AIRTIGHT gives certainty. The Portascanner® AIRTIGHT is the only equipment that is preventative in its operation, allowing the detection of leaks in the very early stages and ensuring that the door fan test is passed on the first try.
Portascanner® AIRTIGHT has been developed in part with research and development funding from Innovate UK. Coltraco Ultrasonics is a proud member of Innovate UK’s Net Zero Heat Cohort, working to provide technology to support the United Kingdom’s transition to Net Zero. We proudly offer Portascanner® AIRTIGHT to the global market as a shining example of British innovation and invention to support sustainability.

| Dimensions | Main Unit: 225x135x35 mm (L x W x D) Generator: 112x67x25 mm (L x W x D) |
| Unit Weight | Main Unit: 1051g Generator: 137g |
| Power Supply | Main Unit: Built-In Rechargeable Li-Po Battery (Micro USB) Generator: Built-In Rechargeable Li-Po Battery (Micro USB) |
| Battery Life | 6 Hours of Continuous Use |
| Sensor Type | 35mm Flexible Sensor Wand |
| Sensor Connectivity | 1.5m BNC Coaxial Cable |
| Generator Frequency | 40 KHz |
| Operating Temperature | -10°C to +65°C (14°F to 149°F) |
| Display | 7.0" 1024 x 600 Capacitive Touchscreen |
| Camera | 8-megapixel camera on rear of device |
| Minimum Leak Detection | 0.06 mm ±0.02mm Leak Diameter |
| Range | 10m |
| Registrations and Approvals | UKCA, CE, Coltraco is ISO 9001 and ISO 14001 registered |
| Warranty | Main Unit: 3 years Sensor Wand: 1 year Technical Support: Lifetime of the Unit |
In some circumstances, our Portascanner® AIRTIGHT may be able to serve as a complete replacement for a door fan test (or other pressurisation test). In many cases, however, the pressurisation test is mandated by regulations, and in these cases, the Portascanner® is a complementary diagnostic and analytical tool, that will help you pass the pressurisation test first time. It will also provide a far higher level of confidence and robustness for any follow-up maintenance, so you can be sure that once a room is airtight, it stays airtight.
We usually recommend placing the generator as far from your test structure as possible. whilst maintaining sufficient readings, particularly when you want to quantify leak sites. This is because, due to the diffusion of sound as it travels through air, at greater distances we have more consistent readings across the entire structure. However, if space is an issue and you cannot avoid placing the generator close to the structure, the Portascanner® AIRTIGHT has both a variable output power on the generator, as well as variable gain settings on the receiver.
Ultrasound, when incident on even a very small leak or crack in a structure, will find its way through the leak and be picked up by an ultrasonic sensor. However, clearly not all of the ultrasound will make it through the leak, as the majority will be reflected or absorbed by the structure. From this understanding, we developed sophisticated algorithms so that, with some careful measurements, the Portascanner® AIRTIGHT is able to compare the relative intensities of the ultrasound incident on and passing through the leak, to accurately and reliably quantify its physical size.
Coltraco Ultrasonics’ Daniel Dobrowolski accepting the 2025 Wates GFS Sustainable Technology Award. We are proud to announce that Coltraco Ultrasonics has been named a winner
The world’s second tallest building, Shanghai Tower, stands at 632 metres tall. We are proud to announce that Mr. Angus Hodgkiss MPhys, one of our
Coltraco Ultrasonics’ Portascanner® AIRTIGHT 520 was used to test the airtight construction of low energy housing in Slovenia. The Portascanner® AIRTIGHT 520 is an portable
Biological Safety Cabinets are used for the containment of potentially harmful pathogens or chemicals during, for instance, blood tests, in order to prevent infection spreading
The Portascanner® AIRTIGHT 520 is a completely unique technology able to compute air flow and air permeability, quantifying leak sites to complement a tightness test.
Coltraco Ultrasonics were delighted to be invited by Bill Bordass, Building Scientist and Paul Jennings, Air Leakage Specialist to test the Portascanner® AIRTIGHT 520 alongside