• 0.5 to 110% IACS (0.28 to 64MS/m) conductivity
  • ±0.05 IACS accuracy for 0 to 20% IACS @68°F (20°C)
    • ±0.25% of readout accuracy above 20% IACS
  • Dual conductivity setting reference
    • 9.4% and 58.8% IACS
  • 60, 120, 240 & 480kHz operating frequencies
  • 32 to 122°F (0 to 50°C) temperature measurement
  • 2GB of storage for over a million data points
  • User programmable color LCD display
  • 2-year warranty on instrument (excludes batteries)
  • Complies with these inspection procedures:
    • Boeing BAC5651
    • Airbus AITM 6-6004
    • ASTM E1004
    • AMS2658
    • BS EN 2007
    • MIL-STD-1537
    • Bell Helicopter BPS 4453

What's in the Box

  • Probe and cable
  • Dual conductivity setting reference
  • Rubber boot & case stand
  • 2 AA NiMH rechargeable batteries
  • 2850 mAHr charger (100 to 240V)
  • UK, US, & EU plug adapters
  • USB cable
  • USB drive with manual and software
  • Quick reference card
  • Instrument case


The ETher NDE SigmaCheck-2 Eddy Current tester is designed and produced by the people who created and manufactured the Hocking AutoSigma 3000. It is made to provide you with an easy to use tool for fast and accurate conductivity measurements with automatic temperature compensation and resistance to "edge effect".

It has an ergonomic design with high impact, splash-proof, molded UL94-5VA flame-retardant ABS case so you can take it into rough environments. The battery lasts for up to 9 hours and you can upgrade firmware and exchange probes in the field via SD card.

You can store your data and upload it to a PC for record keeping and report generating. The real-time clock gives you the ability to time and date stamp your readings, making it easier to sort and organize your measurements in Microsoft Excel.

ETher NDE SigmaCheck-2 Eddy Current Tester Applications

  • Material verification & sorting
  • Heat treatment verification
  • Heat, fire, or lightning damage investigation
  • Material aging assessment (including alloys)
  • Measuring phosphor content of Cu alloys
  • Monitoring of deposition process for non-ferrous material on a non-ferrous substrate
  • Monitoring the condition of highly stressed parts
  • Forged & plated material verification
  • Non-conductive coating thickness measurement (up to 0.5mm)
  • Determining the purity / composition of materials (i.e. gold bullion and coins)
  • Aircraft structures (e.g. paint thickness measurement)