Multi echo ultrasonic thickness gauge

The Portagauge 5 is the latest multi-echo, multi-material ultrasonic thickness gauge, accurate to 0.01mm and capable of ignoring surface coating of up to 20mm.

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Multi echo ultrasonic thickness gauge


The Portagauge 5 is our latest handheld, ultrasonic thickness gauge, capable of working on both metal and plastic. It uses triple echo gauge technology which can measure underlying material, independent from any surface coating such as paint.

Whilst the baseline tripe-echo technology provides the invaluable ability to measure only true thickness readings, it is the C-Scan functions (displaying the waveform of the signal) which provides the user huge insight to guarantee reliable readings. By seeing the waveform, the user can intuitively see how the signals are behaving, if the material itself is in poor condition and ensure that clean and thus reliable signals are being received.

The main application for this technology is for corrosion testing, measuring materials to identify locations of wear, rust and where the strength might become compromised. This equipment allows users to carry out highly analytical measurements quickly and with high degrees of reliability.

The Portagauge 5 can be used for completing sprinkler pipe testing in accordance with NFPA 25. These regulations specify the need to inspect sprinkler pipe thickness to identify areas of corrosion, pooling water or fungal deterioration within the pipes themselves. The Portaguge 5 can help users provide this service to customers.

Whilst we have been making thickness gauging technology for many years, this latest model comes with a variety of new features:

      • High levels of accuracy, capable of measuring thickness to within 0.01mm
      • True metal readings, capable of ignoring coating layers up to 20mm
      • Built in waveform to increase accuracy and ensure true readings
      • Built-in material database for increased accuracy & reliability
      • Available with multiple frequencies for different thickness ranges

What's in the box

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Portaguge 5 Main unit – Hard wearing aliminium case containing  all controls, display, indications and batteries.

Ultrasonic gel – Assists perfect contact between sensor & testing surface for maximum accuracy and ease of use.

Dual element ultrasonic sensor – Generates and receives the ultrasonic signals and with 3 sensor options depending on testing range & materials.

5mm test block – Provides a quick user test to ensure the device is working reliably and accurately 

Carrying case – Protecting the equipment during transport, storage and use

Calibration certificate – For traceability of accuracy and documenting unit setup. 

Operating instructions – We can provide training and technical support via our Video Materials, over the phone or video call but the primary method is through our very clear, step-by-step operating manuals. 

Techical specifications


168mm x 82mm x 31mm


Material Types

Carbon Steel, Stainless Steel (304 & 315), Iron (Cast & Ductile), Copper, PVC Lead, Nylon, Polyethene, Aluminium, Asbestos, Fibreglass, Glass

Measuring Range

1.5mm to 100mm


+/- 0.01mm

Measuring Units

Metric (mm) and Imperial (inches)


Dual Element with 0.9mm LEMO-00 cable


2.25 MHz 

2.5 MHz 

5.0 MHz 

7.0 MHz 


Thickness gauge c scan

Full 128 x 68 pixel graphics with backlight

Power Supply

1 x PP3 9V Battery – 12hours continuous operation 

Operating Temperature

-10C to +65C / 67F to 160F

Enclosure Rating



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


Download Portagauge 5 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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