Portagauge® 6

Multiple echo ultrasonic thickness gauge

The Portagauge® 6 is a multiple echo ultrasonic thickness gauge for measuring thicknesses of various metals and hard plastics, which ignores any coating up to 20mm in thickness. It comes with built-in datalogger to store up to 200,000 thickness measurements and minimum thickness alarm functionality. 

P/N: 2099382-6

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Multi-Echo Capability & Ignores Paint Coating

Easily measure material thickness through paint layers/coatings without removing them. It is able to ignore paint coatings up to 20mm in thickness, giving you the material’s true thickness readings accurate to +/- 0.1mm.

The Portagauge® 6 ultrasonic thickness gauge measures through protective coatings, providing accurate and reliable thickness measurements. This helps you to determine the level of corrosion or erosion without the risk of causing further corrosion damage.



Perfect Companion for Wall Thickness Measurements

The Portagauge® 6 multi echo ultrasonic thickness gauge is a highly accurate and reliable thickness gauge for measuring the thicknesses of various metals and hard plastics, developed to meet BS EN 15317:2013 which is the standard for ultrasonic testing, characterisation and verification of ultrasonic thickness measuring equipment.

Some of the features of the Portagauge® 6 are:

  1. Built in database of 14+ different materials containing speed of sound data and an option to enter custom materials
  2. Measurement units available in both metric (millimetres) and imperial (inches)
  3. A-scan and oscilloscope trace functionality is included to assist your measurements
  4. Datalogging – Save readings directly with a press of a button
  5. For marine applications – meets Classification Society requirements and has an LCD backlight to allow working in dark, poor visibility spaces
  6. Battery life up to 12 hours continuous use on a standard 9V PP3 battery for easy replacement, with battery saving mode – turns off after 30 seconds of inactivity
  7. USB Power Connection – when plugged into a power source via the USB port, the Portagauge® 6 will run on USB power, preserving battery life, and allowing continuous use if connected to mains power.


What's In The Box

  Portagauge® 6 Main Unit:Handheld and battery operated main electronic unit
  Standard 2.5 MHz (Model No. DE2.5-14) Dual-Element Ultrasonic Thickness Gauge Sensor:Most robust and widely used sensor option for metal thickness measurements
  5mm Metal Test Block:25mm x 25mm metal block which is 5mm thick for testing if the equipment is operating correctly
  Ultrasonic Couplant:For ensuring good contact between sensor and material
  User Manual:Contains further information regarding functionality of the instrument and how-to-use
  Calibration Certificate:As evidence that the unit has been tested and shown to be working before dispatch
  Robust Carrying Case:For portability and ease of carrying the equipment

Technical specifications

Technical Specification
  • Height: 168mm
  • Width: 82mm
  • Depth: 31mm
  • Weight: 360g
Measuring Range in Steel

1.50mm – 100.00mm

Material Types

Most metals and plastics, built-in database contains the following: Carbon Steel, Stainless Steel 304, Stainless Steel 316, Cast Iron, Ductile Iron, Copper, PVC, Lead, Nylon, Polyethylene (PE), Aluminium, Asbestos, Fibre Glass, Glass


+/- 0.1 mm


+/- 0.01mm 

Measurement Units

Metric (mm) and Imperial (inches)

Measurement Mode

Multiple Echo (ignores paint coating up to 20mm thick)


4 MB internal storage for datalogging, capable of recording up to 200,000 thickness measurements.

Logs include date, time, a user-set identifier and thickness measurement and can be downloaded to a PC via the micro-USB port.


2.25 MHz, 2.5 MHz, 5.0 MHz


Full 128 x 68 pixel graphics with backlight for working in poor visibility conditions

Additional Features
  • Custom material sound velocity input enables users to test custom materials
  • A-scan functionality to observe material condition and verify correct return backwall echo
  • Oscilloscope trace to assist in performing a good measurement
  • Minimum thickness alarm, audible alert when thickness measurements drop below user-set minimum value
Power Supply

9V PP3 battery, up to 12 hours continuous use with auto shutdown after 30 seconds of inactivity

24/7 power option via micro-USB port

Operating Temperature

Main Unit: -10°C to +65°C

IP Rating

Main Unit: IP 65 enclosure

Sensor Type

Dual element with 0.9m LEMO-00 cable

Sensor Options
  • 2.5 MHz – 14mm diameter sensor, most robust and reliable for metal thickness measurements
  • 5.0 MHz – 10mm diameter sensor, for measuring pipes no smaller than 25mm (1”) diameter
  • 5.0 MHz – 6mm diameter sensor, for measuring pipes no smaller than 15mm (1/2”) diameter
  • CE
  • Meets marine classification society requirements for marine thickness gauging inspection equipment
  • Coltraco is ISO 9001:2015 and ISO 14001 approved
  • Main unit – 3 Year Warranty
  • Sensor – 1 Year Warranty
  • Technical Support – Lifetime of the unit

See the Portagauge® 6 in action.

Frequently asked questions

The Portagauge® 6 has a built-in database of over 14+ materials for testing. Some of the materials listed are: Carbon Steel, Stainless Steel 304, Stainless Steel 316, Cast Iron, Ductile Iron, Copper, PVC, Lead, Nylon, Polyethylene (PE), Aluminium, Asbestos, Fibre Glass, Glass. There is also an input for custom materials, to allow you to input test material not in the list.
The accuracy relates to the instrument’s ability to measure as close as possible to the true thickness value whereas the resolution determines to what fraction of a measurement unit the instrument can reliably measure. For the Portagauge® 6, it is capable of measuring the thickness of a material to an accuracy of +/- 0.1mm with a resolution of +/- 0.01mm.
The wall thickness measurement that is displayed on the Portagauge® 6 represents the remaining wall thickness of the material that is in good condition. This is measured by the reflected sound waves coming from the portion of the good material left in the structure. By comparing the wall thickness measurement from the Portagauge® 5 to the actual wall thickness of the material when it was in brand new condition allows the operator to determine the severity of the corrosion.
The Portagauge® 6 performs excellently on materials without a paint coating. The multi-echo technology works just as reliably on surfaces without a paint coating, as it does on surfaces with a paint coating.

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