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Helmut Fischer Sigmascope SMP350 for electrical conductivity

Mobile device for fast, non-destructive testing of the ferrite content of steels, for example in pressure vessels and pipework, according to the magnetic induction method.

SIGMASCOPE SMP350 is a compact handheld device for determining the electrical conductivity of non-ferrous metals such as aluminum or copper. The measured conductivity further enables you to draw conclusions about the hardness and strength of heat-treated materials. Evidence of heat damage and material fatigue can thus be established. For this, the phase-sensitive eddy current method is used, which is approved for the measurement of conductivity.



  • Fast, non-destructive and precise measurement of the electrical conductivity of non-ferrous metals
  • Conductivity probes for a range of applications
  • Various measurement frequencies for different penetration depths, from 15 kHz to 1 MHz, depending on the probe
  • Automatic curvature compensation for known curvature diameters (down to the smallest diameter of 6 mm)
  • We offer certified measurement standards (in MS/m, %IACS), which are traceable to internationally recognized calibration standards



  • Conductivity testing on raw materials for sorting and quality assurance
  • Inspection of alloying in coinage (e.g. the conductivity of Euro coins)
  • Assessment of the hardness and strength of heat-treated materials
  • Control of the material stability of airframes or similar components that can be altered by temperature swings
  • Estimation of the phosphorous content in copper alloys or copper-bearing materials
  • Tracking of precipitation processes, e.g. in Cu-Cr alloys
  • Inspection of the homogeneity of alloys
  • Scrap sorting

For more information visit Helmut Fischer website.

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