Multi echo thickness gauge

Easy to use analytical mutigauge for precision corrosion and thickness survey requirements.

P/N: 2099382-4

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Multi echo thickness gauge


Portagauge® 4 Triple Echo Ultrasonic Thickness Gauge allows measurements of the metal independent of any surface coatings such as paint. Submit an enquiry and our expert team will send you details and pricing within 24 hours.

Accurate: To +/- 0.1mm

Capability: It can measure thicknesses up to 250mm and the resolution can be set to either 0.1mm or 0.05mm depending on requirement.

Technology: The Triple Echo Ultrasonic Thickness Gauge sends multiple signals into the metal. By measuring the different reflections, the Portagauge 4 can isolate the pure metal readings, ignoring any surface coatings like paint

Ergonomic: With comfortable rubberized enclosure and the option of a plastic case to protect the unit from dirt, the Portagauge 4 is among the most ergonomic models of the range.

Versatile: With multiple sensor options available

  • 2.25MHz probe – measuring range of 3 to 250mm (included as standard)
  • 2.5MHz probe – measuring range of 2 to 150mm
  • 5MHz probe – measuring range of 1 to 50mm

The Portagauge range is also used throughout the Marine Industry for a variety of hull & pipework, corrosion testing, and many more.

What's in the box

Portagauge 4 main until with controls, display, connections and contained within an ergonomic rubberised enclosure

Sensor which is the 2.25MHz probe as standard (measuring range of 3 – 250mm) but can include 2.5MHz probe – 2 to 150mm range or 5MHz probe – 1 to 50mm range 

Test block 15mm thick to verify unit operation and accuracy 

Operating instruction 

Carrying case protecting the equipment during transport, storage and use

Calibration certificate For traceability of accuracy and documenting unit setup. 

Ultrasonic gel to help with effective and efficient testing 

Techical specifications


147 mm x 90 mm x 28 mm 

325 g

Sound velocity

From 1,000 m/s to 8,000 m/s

Sensor Options

2.25 MHz Sensor – 3 to 250 mm

2.5 MHz Sensor – 2 to 150 mm

5MHz Sensor – 1 to 50 mm

Accuracy & Resolution

0.1mm or 0.05mm depending on sensor


3 x AA 1.5V batteries 

20 hours continuous use


Steel, Stainless Steel, Cast Iron, Aluminium, Copper, Brass, Zinc, Quartz, Glass, PVC, Polyethylene

Operating Temperature

– 10C to + 60C

Enclosure Rating



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



Download Portagauge 4 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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