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mea series portable array eddy current detector
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portable multi-channel array eddy current tester




product introduction

the mea-128 portable multi-channel array eddy current tester is independently developed and manufactured by our

company. it supports a 128-channel array and adopts an embedded computer with built-in software design, enabling

rapid evaluation and analysis of surface and near-surface cracks and corrosion.


product principle



array eddy current technology is based on the eddy current principle. its probe is composed of multiple independently operated coils arranged in a special layout. between the excitation coils and receiving coils, electromagnetic fields are transmitted in two mutually perpendicular directions.

during operation, mechanical scanning of the probe is unnecessary. only timedivision switching of the array coils is carried out following preset logical procedures. the eddy current response signals collected by each coil are transmitted into the instrument’s signal processing system through a multiplexer, which completes the circulating inspection of the entire array.

to improve inspection efficiency, an array eddy current probe is equipped with several, more than a dozen, or even dozens of coils. both excitation coils and receiving coils are arranged with an extremely small spacing. multiplexing technology is adopted to effectively avoid mutual interference among different coils.

take the differential 48-channel equipment as an example: with 8-channel parallel excitation,full probe inspection can be

completed in merely 6 excitation cycles.



product advantages

  • rugged aluminum-magnesium alloy housing with three-proof design;

  • supports 128-channel array, greatly improving inspection efficiency;

  • high signal-to-noise ratio (snr) enables detection of micro defects;

  • intuitive c-scan imaging for easy interpretation of inspection results;

  • equipped with tangential eddy current technology;

  • dynamic lift-off compensation technology for weld inspection ensures stable detection sensitivity;

  • supports 3d waterfall diagram display;

  • built-in 500g large-capacity data storage;

  • data import and export available via usb, wi-fi and bluetooth.

application scenarios

  • pipelines & pressure vessels

  • boilers & storage tanks

  • aircraft skin & blades

  • industrial manufacturing

technical parameters overview

  • drive mode: continuous, multiplexing

  • drive voltage: 0-10vpp (single drive mode), 0-20vpp (push-pull mode)
  • output current: max. 0.4a
  • number of channels: 32, 64, 128
  • data rate: 100,000 data points/s
  • eddy current array interface: 41-pin
  • i/o interface: 18-pin
  • operating temperature: -20℃ ~ 55℃
  • compliance standards: rohs, ce
  • dimensions: 365×235×65mm
  • weight: 4.5kg
  • power supply: mains power or lithium battery (8 hours)

optional probes


flexible array probe is a general-purpose surface probe adaptable to various geometric shapes.

its dual sensitivity allows detecting cracks in all directions with only one single scan. it is suitable for a wide range of materials such as carbon steel, stainless steel and aluminum, and can reliably detect defects as small as 0.5mm.

     


array tangential eddy current probe is built with 16 coils and adopts dynamic lift-off compensation technology,

mounted on an adaptive structure.the structure enables it to adapt to weld profile variations.

it is applicable to weld inspection of carbon steel, capable of detecting through paint coatings and providing dimensional

information of defects.

         

balanced field eddy current pen probe is mainly used for inspection in confined areas, especially suitable for weld testing

of small nozzles.



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