Pulsed Eddy Current Array (PECA) High-resolution Probe

Safe assessment of the minimum remaining wall thickness under corrosion scabs and blisters

Eddyfi® offers a dedicated PECA™ solution to assess the remaining wall thickness through corrosion scabs and blisters. With a specialized High-Resolution sensor, scan accessory, and advanced algorithm, the PECA-HR scab kit enables safe assessment of corrosion scabs in-service without surface preparation.


  • Array of dual sensors capable of spatial triangulation:
  • Dual sensor coil design
  • High-resolution acquisitions
  • 75 mm (3 in) coverage in a single pass
  • Two acquisition modes: grid and encoded dynamic scanning
  • Software with advanced real-time processing and a dedicated scab mode
  • Semi-rigid scab mat for constant liftoff during acquisition


The patent-pending high-resolution PECA probe is part of a complete solution dedicated to providing the best estimate of remaining wall thickness over surface-forming scabs and corrosion blisters.

Using an array of dual sensors capable of spatial triangulation, the probe enables the detection of the smallest possible defects with Pulsed Eddy Current (PEC) technology, within an adequate range of wall thickness and liftoff. With 75 mm (3 in) of coverage and encoded dynamic-scanning, typical scabs can be inspected in less than 1 minute! The array design generates clean and compelling C-scans. The novel probe, combined with advanced real-time processing, a dedicated scab mode and a new scab mat, provides top-quality data at unrivalled speed. It supports metal thickness 3-19 mm (0.12-0.75 in) and liftoff 0-50 mm (0-2 in).

Check out the video introducing the new complete solution.

The Most Reliable Option for Scab Corrosion Assessment

Since the PECA HR solution does not require surface preparation, the assessment of the remaining ligament can be performed while the asset is in service. Moreover, the technique provides 100% coverage, and does not use radiation for a safe work environment.

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  • Small
Number of channels
  • 6 (3 × patent pending dual sensors)
Total coverage
  • 75 mm (3 in)
Wall thickness
  • 3–19 mm (0.12–0.75 in)
Insulation/coating thickness (liftoff)
  • 0–50 mm (0–2 in)
Weather jacket thickness
  • Not supported
Outer diameter range
  • 152 mm (6-in) to flat surfaces
  • 16.04 counts/mm (407.44 counts/in)
  • 5 m (16.4 ft)