Portascanner® AIRTIGHT 520

New January 2021: Portascanner® AIRTIGHT 520 supports building and fire regulations which require air tightness testing, air leakage testing, air permeability testing or room integrity testing. It identifies leak sites and quantifies the air flow rate through them to help achieve adequate airtightness in the room for energy efficiency reasons, CO2 emissions, or, as in the fire industry application, the efficacy of a fire suppression system in extinguishing a fire when it is released with an air permeability value.

7 inch Touchscreen Handheld Ultrasonic Air Tightness Quantifier for buildings and fire safety

P/N: 509004-AT520
Leadtime: 6-8 weeks

Enquire NowSend Price

Ultrasonic leak detector launched January 2021. For non-disruptive identification and quantification of leak sites to help in achieving adequate airtightness.

  • For building and facility maintenance in response to new building regulations which require air tightness testing, air leakage testing, and air permeability testing
  • For fire safety engineering room integrity tests to complement door fan testing.

Portascanner® AIRTIGHT 520 evolved from developing the Portascanner® COVID-19, and in response to new building regulations which require air tightness testing, air leakage testing, and air permeability testing, in buildings and facitilies management, to ensure that HVAC systems operate effectively and efficiently, to reduce operational costs and CO2 emissions. 

It has applications also within the Fire Safety sector, assisting during their installation and maintenance to aid with compliance with ISO 14520, EN15004 and NFPA regulations

Indoor air quality is now recognised as a key issue in homes, offices, hospitals, schools and factories, the integrity of which can only be maintained if the air intake and exhaust is controlled, within an airtight environment. However, existing tests for airtightness are disruptive, costly, difficult and only provide information on the overall ‘leakiness’ of the room or building. A separate test is required to locate any leaks and there is currently no way to quantify these leaks.  

  • Portascanner ® AIRTIGHT 520 is an instrument that, with minimal training, allows an operator to locate leaks in a given room or structure and then quantify them by their cross-sectional area.
  • This can then be used to calculate an air flow rate through the leak. On its own, though, air flow rate does not provide adequate information to quantify the airtightness of a room.
  • This is because an air flow rate depends only on the physical size of the leak, the thickness of the structure through which the leak occurs, and the relative pressures on either side of the leak.
  • Therefore, a given size of leak would result in air flowing at the same rate regardless of the size of the room into/out of which the air flows. 
  • It is clear, that if a volume of 5m3 of air per hour flowed through a leak into a compartment of 5m3, this will have a much more considerable effect than that same air flow into a compartment of 1000m3.
  • As such, regulations usually reference air permeability or air changes per hour, which account for the size of the roomPortascanner® AIRTIGHT 520with some additional dimensional data about the room, can quantify leaks in terms of each of these metrics, plus providing the raw air flow and the cross-sectional area of each leak individually 

Portascanner® AIRTIGHT 520 is another vital technology developed by Coltraco Ultrasonics, which complements HVAC and air filtration systems, by first ensuring the airtightness of spaces, and quickly locating any air leaks. One without the other would somehow render the latter redundant. 

Key Features 

Portascanner® AIRTIGHT 520 gives the ability to fully assess a room prior to the installation of FPE (Fan Pressurisation Equipment) meaning considerable resources may be saved by significantly reducing the risk of installing FPE in an unsuitable room

  1. 8 megapixel camera
  2. Dual function
  3. Power settings
  4. Record data & export via USB
  5. Filter records by date or location
  6. Maintenance tool (not medical)


  1. ACCURATEDetermine air leakage rates through walls, doors, seals.
  2. RESULTS-BASED – Calculate number of leaks, leak area, total air flow rate and air permeability rate.
  3. PRECISE – Find exact location of leaks, so remedial measures can be taken. This means one does not need to undergo the “patch and hope” procedure that is currently used.
  4. FAST & EASY – Far quicker and easier than the alternative.

Get in touch to solve your air permeability now

  • use the enquiry form at the top of the page
  • download the free brochure
  • go on our live webchat  
  • further contact details on the Contact Us page:

Contact Us


1 Portascanner® AIRTIGHT 520 Main Unit,

1 Portascanner® AIRTIGHT 520 Generator,

1 Receiver Wand,

1 BNC Cable,

1 Headphones,

1 Hard Wearing Carrying Case,

1 Charger,

1 USB stick,

1 Calibration Certificate,

1 Operating Instructions

1 Generator tripod mount (optional)


  • Main Unit: Height: 225mm (8.86 inches) Width: 135mm (5.31 inches) Depth: 35mm (1.38 inches) Weight: 1051g (37.07 ounces)

  • Generator: Height: 112mm (4.41 inches) Width: 67mm (2.64 inches) Depth: 25mm (0.98 inches) Weight: 137g (4.83 ounces)


0.5mm leak diameter


Single transducer (40kHz). Variable power settings. Mounting method – tripod (optional)

Receiver Wand

Total Length: 230mm Rod Diameter: 25mm. Extension parts available for longer length. Connected by BNC connector to 1m length co-ax cable

Operating Temperature

-20°C to +70°C (68°F to 158°F)


7-inch capacitive touchscreen, LCD back-lit, 1024x600 resolution display


Visual via User Interface Display. Metric or Imperial Units available. Measures cross-sectional area of leak sites. Audible via external headphones


  • CE
  • ISO 9001 Registered
  • ISO 14001 Registered Company


Main Unit: 3 Years Warranty Sensor: 1 Year Warranty Lifetime Customer Support

Package Contents

  • 1 Portascanner® AIRTIGHT 520 Main Unit,

  • 1 Portascanner® AIRTIGHT 520 Generator,

  • 1 Receiver Wand,

  • 1 BNC Cable,

  • 1 Headphones,

  • 1 Hard Wearing Carrying Case,

  • 1 Charger,

  • 1 USB stick,

  • 1 Calibration Certificate,

  • 1 Operating Instructions
  • 1 Generator tripod mount (optional)

Power Supply

Both generator and main unit are LiPo battery operated. Rechargeable via micro USB. No replacement required. Battery life: 6+ hours continuous use (TBC)


8 Megapixel camera on rear of device

Thank you for your interest in Portascanner® AIRTIGHT 520 Simply enter your name and email for your free instant brochure download.

    Is Portascanner® Airtight 520 more accurate than existing tests?

    As it is not a direct measure of air flow and relies instead on leak size and theoretical models, the device may be slightly less accurate at predicting the exact airflow. However, where the Portascanner® Airtight 520 excels is in providing the exact location and a thorough description of the extent of each individual leak quickly, easily and non-disruptively. This allows for far more efficient and targeted remedial actions. 

    Why would I use Portascanner® Airtight 520 instead of Door Fan Testing?

    Whilst regulations often require door fan testing, this will always require third party contractors and expensive equipment. It is very expensive and if the building does not meet standards it must be repeated.  Portascanner® Airtight 520 allows for regular testing and ‘on the fly’ remedial action to considerably increase the chance of a successful test and to allow future maintenance. 

    Do the people working, or I have to leave the room when the equipment is being used?

    No, the Portascanner® Airtight 520 can be used with people in the room, as long as they do not directly interfere with the test (i.e. standing directly between the generator and receiver).  

    Does it matter where I place the generator in the room?

    To some extent, yes, however the application will guide you through finding an optimal position for the generator. Generally, though, the generator should point directly at the structure to be tested, positioned with transducer approximately centred on the structure at a distance of 0.5-5m. 

    Does it matter which side of the door I test from?

    No, it does not matter, the test should be performed from whichever side is most convenient and practical. For example, if you are testing a door that leads onto a corridor, we would suggest placing the generator inside the room and performing the measurements from the corridor so as not to obstruct the corridor. 

    Can this be used in temporary, or infection control tents?

    Provided the material used sufficiently blocks the ultrasound where there is no leak, then yes. This can be used anywhere as long as there is access to both sides of the structure. 

    If there is an emergency, can the test be stopped immediately?

    Yes, there is no complicated equipment required for a test, just the generator and the hand-held Portascanner® Airtight 520 unit. In the case of an emergency, you may simply leave, all that may happen is the generator will use battery power and may need to be recharged.  

    Can I connect to WiFi or do I need to use a USB drive to export the reports?

    Currently, a USB drive is required to export the reports. This will be included in the package; however, any USB drive can be used.