Accurate Results with Coltraco Portagauge® IV

Coltraco Commitment To :

  • Through-life maintenance support
  • We still maintain units built 20 years ago
  • Extend trade-in credits - replace old units for new
  • UL listing & ABS type approval - Portalevel™ MAX
  • ABS type approval & RINA approval - Portascanner™
  • Be a life-safety technology partner – Permalevel™
  • Certified OEM calibration & ODA service stations

Coltraco manufacture Ultrasonics That Work

Accurate Results with Coltraco Portagauge® IV

Coltraco Limited, UK qualifies to be one of the leading companies in the world for safety instrumentation and constant monitoring systems. They produce a variety of products from ultrasonic liquid indicators to ultrasonic hatch cover testers, ultrasonic flow meters, ultrasonic thickness gauges, ultrasonic bearing indicators - to many others. These offer solutions in many sectors including gas and oil, defense, marine, power generation and fire protection. The Portagauge® range and accessories are found easily online.

As far as the ultrasonic thickness gauge is concerned, Coltraco have now introduced the 4th generation. The Portagauge® IV is the analytical thickness gauge which offers unparalleled accuracy. This uses triple echo technology which allows operators to inspect the underlying metal thickness, independent of any surface coating such as paint. For applications where true metal readings and a higher degree of accuracy is required, the Portagauge® IV is the ideal solution. With a variety of sensor options available and underwater variants, this range of units can easily be adapted to a variety of different roles and requirements.

Technical Specifications of Ultrasonic Thickness Gauge

Here, we have enlisted technical specs available for this ultrasonic thickness gauge. Take a look!


  • Width: 90mm
  • Height: 147mm
  • Depth: 28mm
  • Weight: 325grams


±0.1mm (0.005”) or ±0.05mm (0.002”)

Verifiable Agents

Steel, Aluminum, Brass, Grey Cast Iron, Cast Iron, Copper, Zinc

Power Supply

3x disposable AA alkaline batteries or rechargeable NiHM/NiCD (battery life 20 hours)


  • 5 MHz 13mm (1/2”) (blue) & 6mm (1/4”) (blue)
  • 3.50 MHz Probe 13mm (1/2”) (green)
  • 2.25MHz Probe 19mm (3/4”) (yellow) & 13mm (1/2”) (yellow)
  • Display
  • LCD Numeric Digital Display with LED Bar Graph

Operating Temperature

-10 C to +50 C (14°F to 122°F)


  • ISO 19011 Registered
  • CE


  • British Standard BS EN 15317:2007 which covers the characterization and verification of ultrasonic thickness measuring equipment
  • IP Rating 65


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

Portagauge® IV Content

  • 1 Hardy Carrying Case
  • 1 Portagauge IV unit
  • Operating Instructions
  • 1 2.25MHz Sensor
  • Calibration certificate

For further information, download PDF


CEO Message

Integrity and Science Key to Our Culture of Performance

Dear Coltraco Customers, Strategic Partners and Distributors,

Integrity is our defining value. Performance is its consequence. We understand that our customers have choices, and how we perform determines whether customers choose us. Coltraco’s Code of Ethics does not merely require compliance with laws. It embodies a Commitment to positive behaviours that build trust, promote respect, operate with distinction, with courtesy and global levels of performance, demonstrating our integrity and delivering customer performance.

We honour our commitments, communicate transparently, and act with honour. Ethics are the foundation of our performance culture and our science-based approach. We lead in specific technologies delivering the watertight integrity monitoring of marine structures and the monitoring of fixed liquefied gaseous fire extinguishing systems and the room integrity of protected space to ensure agent hold-times post-installation. We show this by our understanding of the science in them and the mathematics that explain them.

I would like to thank you for your business and for the relationships with our Customers, Strategic Partners, Distributors and ODAs who we value so highly.

My kindest regards,

Carl Stephen Patrick Hunter BA(Dunelm) Hon DSc FRINA FIMarEST MRAeS
CEO & Managing Director
Coltraco Ultrasonics Limited
46-47 Mount Street, Mayfair, London W1K 2SA
United Kingdom

Tel:  +44 20 7629 8475
Fax: +44 20 7629 8477

Call Now : +44 207 629 8475


References in PDF Format


Underwriters LaboratoriesUnderwriters Laboratories


Reference Alpha Fire UK Portalevel MAX Sept 2012

Reference Portascanner-II CSD MOD Albion and Bulwark





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