M2M Gekko PAUT Phased Array Instrument with TFM, UT, TOFD (2023) (2023)

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Be the best inspector you can be

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Gekko® is a field-proven flaw detector offering PAUT, UT, TOFD and TFM through the streamlined user interface Capture™. Released in 32:128, 64:64 or 64:128 channel configurations, M2M Gekko combines high-resolution and speed while reducing inspectors’ training time.


Reinventing High-definition Portable UT

Pioneering real-time TFM since 2013, Gekko innovation keeps being driven by market applications. Used in accredited training centers and ready for TFM standards, it benefits from advanced algorithms through a streamlined software user interface (Capture). Simply powerful, Gekko brings the latest technology at your fingertips.

Built for All-level UT Inspectors

With continuously added tools in one standalone application, Capture eases the inspection process and reduces operator errors. Without the need to use third-party software to load basic and advanced procedures, all-level UT inspectors have access to performance through a visual and guided interface. Capture offers a quick way to improve PAUT knowledge and requires minimum training for phased array inspectors.

M2M Gekko PAUT Phased Array Instrument with TFM, UT, TOFD (2023) (1)


  • Increased accuracy with high-resolution imaging
  • Advanced defect analysis with Total Focusing Method (TFM)
  • Robust field unit with high battery autonomy
  • Easy setup with embedded scan plans
  • Evolutive software following inspectors feedback


  • Multi-group weld inspection procedures fully covered
  • HTHA and hydrogen damages inspection with TFM
  • Thick welds and CRA/stainless steel weld inspection enhanced with 128-element aperture
  • Corrosion mapping of large areas (up to 5 × 5 m [16.4 × 16.4 ft] / 1 mm [0.04 in] step)
  • Complex geometry dedicated solution for nozzle and fillet welds (Y and T joints)

Want to see Gekko in action? Book a demo!

Designed for the Field

Gekko, the #1 PAUT unit with Total Focusing Method (TFM), has been upgraded based on inspectors' feedback. Offering both conventional UT, TOFD and advanced PAUT, Gekko is the most versatile unit adapted to field conditions.

A Complete PAUT Portable Unit

Gekko includes all basics and advanced UT features in a reinforced compact casing designed for field use. It natively comes with conventional UT, TOFD and all beam-forming phased array UT techniques for single-beam and multi-group inspection and its 3-encoded axis capabilities make the Gekko ready for any challenging inspection. This rugged PAUT equipment also offers real-time TFM/FMC (Full Matrix Capture) and Adaptive TFM techniques.

(Video) M2M GEKKO - Discover the most powerful PAUT/TFM flaw detector and be the best inspector you can be.

Portable & Robust

Bumpers and connectors are designed for robustness and accessories versatility. The bright resistive touch screen allows outdoor use in rough conditions. Powered by 2 hot-swappable batteries, Gekko now reaches up to 6 hours of autonomy and becomes the ultimate reference in its product range. Designed for IP66 with a drop test rating in accordance with MIL-STD-810G, the rugged enclosure can withstand the harshest site conditions.

Fast Connectivity Solution

The connectivity solutions—dongle-activated Wi-Fi™, USB 3.0 connector and Gigabit Ethernet output—allow to speed up data transfer and to remotely control your inspection in challenging conditions (TeamViewer license included). Moreover, the 256 GB SSD makes the operator’s work very comfortable with unlimited data file size, thus saving time in the field.

Water and Drop Test

(Video) Eddyfi Technologies Gekko phased array instrument with 3-axis scanner

M2M Gekko PAUT Phased Array Instrument with TFM, UT, TOFD (2023) (2)

No Compromise on Performance

The innovative electronics offers up to 128 channels, great signal quality and TFM resolution for improved detection and confidence. It now reaches a high scan speed and productivity.

Compatible With Most Accessories

Coming with an IPEX type PA connector and a LEMO16 encoder, Gekko is compatible with Eddyfi® accessories and most probes and scanners on the market. For other configurations, Eddyfi can provide the adapter to ensure compatibility with your current accessory.

Ask an Expert

Streamlined Workflow

Powered by Capture, the new generation Gekko has been designed toeasethe setup process andsave timefor the inspectors operating in tough environments.

The newly added onboard scan plan and analysis features join the popular 3-click wizards for evaluation of material velocities, amplitude balancing of the transducer, flat and curved wedge calibration, as well as theautomated TCG.

Enriched to offer an all-in-one inspection solution—from application design to inspection and reporting—Capture offers the latest phased array technologies in a couple of clicks.

M2M Gekko PAUT Phased Array Instrument with TFM, UT, TOFD (2023) (3)

M2M Gekko PAUT Phased Array Instrument with TFM, UT, TOFD (2023) (4)

Unique Features

  • Complete toolbox for TFM including TCG calibration
  • High-resolution TFM imaging up to 128 elements
  • 3-axis nozzle inspection with live overlay display
  • 3-axis paintbrush for composite and corrosion mapping
  • Live display of fillet weld inspection
  • Real-time Adaptive TFM (ATFM) for inspection of wavy surfaces

Ask an Expert

(Video) Eddyfi Technologies Gekko phased array instrument with 3-axis scanner

Exclusive Content

Workshop Capture 3.2 for welds


Pause-café avec Eddyfi | Inspection de soudures à l’aide d’une configuration multigroupes TFM

Coffee Break presented in French


Performance des outils d’analyse Capture pour l'inspection de soudures (PAUT, TOFD et TFM)

Workshop presented in French.

Ultrasons multi-éléments et TFM : puissance combinée pour l'inspection de structures critiques

Workshop presented in French.


Life is better with TFM: How can the game-changing method enhance your inspections in real-time

In this Webinar, you’ll learn:

  • How Eddyfi Technologies, as TFM pioneers, implemented new options for real-time TFM in its instruments (such as plane wave imaging -PWI-, etc,),
  • How this cutting-edge NDT technique can enhance your NDT inspections
  • How codes and standards are accounted for directly in the system to guarantee the compliance of all setup parameters
  • How intuitive and easy it is to use TFM within the Capture software, especially with 3D and toolbox analysis.

The webinar includes a presentation of the technique, illustrates the power of the Capture interface, features a demo portion and addresses some of the most frequently-asked questions.


How to simplify welds NDT inspection using Total Focusing Method (TFM) and Phased Array UT (PAUT)

Girth-weld inspections require numerous parameters to be specified on most flaw detectors. The Gekko and Mantis user interface (Capture) solves these challenges. Using off-the-shelf probes, the NDT inspector can quickly configure his unit, scan, and analyze the collected data with confidence.

In this Webinar, you’ll learn:

  • How fast Capture makes it easy to get ready to scan using ultrasonic techniques such as Total Focusing Methods (TFM) and Phased Array Ultrasonic Testing(PAUT), how streamlined is the analysis of TFM data and how chosen approaches compare.

    (Video) [Qnex] Gekko PAUT 장비 - TOFD Calibration

  • How adding TFM to a PAUT unit overcome limitations of each technique

  • A case study: girth-weld inspection setup, data acquisition, and analysis overview


Weld Inspection Paparazzi | World Pipelines Article

This exclusive content discusses the use of ultrasound imaging techniques for pipe welding inspection of varying weld conditions.

Download the PDF



Dimensions (W × H × D)
  • 410 × 284 × 126 mm (16.1 × 11.2 × 5.0 in)
Weight (with 1 × battery)
  • 6.4 kg (14.1 lb)
Power supply
  • 15 V, 5.67 A
Batteries (hot-swap capabilities)
  • Types: 2 × Li-ion, 94 Wh capacity
  • Typical life: up to 6 hours
  • 26.4 cm (10.4 in) resistive touchscreen
  • 1024 × 768 px screen resolution
(Video) GEKKO Portable Phased Array Flaw Detector December 2015


IP rating
  • Designed for IP66
Operating temperature
  • 10–45°C (14–113°F)
Storage temperature range
  • w/ batteries: 20–60°C (-4–140°F)
  • w/o batteries: 20–70°C (-4–158°F)
  • According to MIL-STD-810G


Fast gigabit Ethernet, Wi-Fi connection with USB dongle

(Video) M2M Gekko Calibration Static Tutorial ( Velocity, Amplitude Balancing, Angle /Hight Check &TCG ).@1

1 × Micro display port

1 × IPEX PA connector

3 × axis encoder input

1 × USB 3.0, 3 × USB 2.0

LEMO® 00 UT connectors (4P/R)

I/O 12 TTL (5 V/24 V), 6 × open collectors


PAUT channel configurations: 32:128PR, 64:64PR or 64:128PR

Active aperture up to 64 elements

Linear, matrix, dual linear & dual matrix arrays

Up to 8 beam sets | Up to 2,048 focal laws

Linear, sectorial, compound scanning & CIVA-laws import

CIVA-fueled phased array calculator

True-depth, constant sound-path & projection focusing modes

On-board focal law calculator on plates, pipe systems, fillet welds, nozzles


Real-time TFM up to 128 elements 256 kpi

Refresh rate up to 110 Hz at 65 kpi

Real-time adaptive TFM (ATFM)**

All calibration wizards available

Image resolution above 4 Mpi in post-processing

(Video) BE THE BEST INSPECTOR YOU CAN BE - Introducing the NEW Gekko

Direct, indirect and converted modes

FMC recording

8 × manual resolution levels, 1 × auto resolution setup


Hardware acquisition gates

PRF up to 40 kHz

Data flow on SSD up to 180 MB/s

Live 3D/overlay display

A-scan/peak data recording

Data compression up to 32x

Live data missed information

Data file size: limited by SDD capacity

1. 2 Fast Real time imaging TFM on GEKKO

2. Gekko PAUT

3. M2M Gekko Calibration Static Tutorial ( Velocity, Amplitude Balancing, Angle /Hight Check &TCG ).@2

4. GEKKO presentation film

5. GEKKO water-test ©M2M

6. GEKKO - Inspection of Electro Fusion Fittings

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(Video) OmniScan® X3 Phased Array Flaw Detector Overview


What is the difference between TOFD and phased array? ›

While PAUT uses reflection, TOFD uses diffraction. The transducer produces pulsed ultrasonic waves, which are diffracted to various degrees by irregularities in the scanned material, then collected on the material's far side by a receiver.

What is the difference between UT and TOFD? ›

In practice, testing with the TOFD method is only applied by continuously moving the probe pair along the weld seam, while in traditional UT techniques the probe must be also moved perpendicular to the weld seam. Depending on the equipment the scan is performed either manually or by use of an automated manipulator.

How does phased array ultrasonic testing work? ›

Phased Array is an ultrasonic testing technique that uses specialized multi-element “array” transducers and pulses those elements separately in a patterned sequence called “phasing”. This phasing sequence allows wave steering, focusing, and scanning. This is all performed electronically.

What is the difference between ut and paut? ›

A PAUT transducer uses multiple elements during a scan. Beams are emitted sequentially at multiple angles allowing PAUT to create a more detailed scan. Other UT methods, on the other hand, use a single probe to analyze an asset. By emitting multiple beams, PAUT allows for the inspection of even the most complex assets.

What is the disadvantage of TOFD? ›

A disadvantage of TOFD is that the gain must be very high, which produces a very high back wall echo and it is not suitable for coarse grained materials. There is a dead zone for defect detection under the surface. It means, defects close to the surface could not be detected.


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