Maxwell NDT — PECT Pulsed Eddy Current Detection

The Maxwell NDT PECT system, offered by ETher NDE and Maxwell NDT, is an exceptionally capable pulsed eddy current inspection system that has been developed by one of the founding fathers of pulsed eddy currents, with years of practical in-service know-how at its very core.

Globally, ETher NDE represents its pulsed eddy current technology (PECT) product, which has been mainly developed for detecting corrosion concealed under insulation. Earlier instruments usually lacked the power to be fast and effective. MAXWELL NDT uses the latest battery technology and introduces an innovative and highly powerful PECT instrument with a design based on two decades of hands-on experience at a global oil company.

With a truly simple user interface and unrivaled inspection capability, users are challenged to test the Maxwell system side by side against any other commercially available PEC system and be prepared to be surprised. It is an affordable, simple, and capable PEC inspection tool.


The MAXWELL NDT pulsed eddy current (PECT) instrument has been exclusively developed to provide an exceptional signal to noise ratio, when compared to other currently available instruments. This is partly due to:

  • Fast single pulse
  • High current and compact magnetic field probe
  • High current NiMH batteries (hot swappable) in combination with a high power pulse, owing to bulky conductor diameter cabling

The resulting superior signal delivers:

  • High-speed testing at high insulation/lift-off distance
  • Large range in wall thickness, around 50 mm (2”) combined with insulation thickness, which is therefore ideal for vessel inspection in addition to piping/pipeline inspections
  • Exceptionally robust design provides superior performance under the standard rigors associated with on-site inspection
  • Excel format data offers easy compatibility with other applications
  • Easy-to-use, intuitive software has been created with the NDT technician in mind, enabling easy reporting onboard the instrument and on users’ desktop PC
  • All inclusive lifetime pricing eliminates the need for yearly software support fees


Pulsed eddy current testing (PECT) is capable of measuring the remaining steel thickness without having to remove coatings, insulation, marine growth, and deposits. Several applications are available where this technology can be shown to be relevant; a few of which are listed below:

Top Applications:

  • Corrosion under fireproofing of supporting legs of storage spheres
  • Original intention: CUI  (piping and vessels)
  • Flow-accelerated corrosion (power plants)
  • Inspection of column skirts
  • Storage tank annular rings
  • Splash zone of offshore structures and risers

Other Applications:

  • Subsea pipelines
  • Sheet piling (jetties, port structures)
  • Repair wraps
  • Remaining ligament under corrosion
  • High-temperature wall thickness monitoring
  • Ship hulls
  • Well casings

Maxwell NDT—PECT Pulsed Eddy Current Detection

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