Application / Sheathed products


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About Sheathed products

Eddy current technology can be used to detect splices, connecting wedges or joint inside coated material such as steel tubes with PVC insulation. In this example, an EDDYSENSOR and an encircling coil are used.

Heating tube

Joints that link individual tubes under sheathing can easily be identified using an eddy current probe.

Rubber-coated rail

Continuous rails are more lightly constructed in places where they will later be sawn apart. Sheath optically hides these positions but they are easily and automatically identified using the eddy current test method.

CATV cabling

CATV cabling has radiation openings located in strategic places. Eddy current testing can identify these openings even though they are hidden beneath the extruded PVC sheath.

Eddy current sensing equipment

PRÜFTECHNIK offers a very basic eddy current tester, the EDDYSENSOR, that is ideal for precisely these sorts of simple sensing tasks. Whereas light barriers or other standard sensors are not effective, eddy current signals penetrate the sheath and detect discontinuities or splices in the metal within. When it detects a discontinuity, the EDDYSENSOR transmits a delayed or undelayed signal to a saw or color marker which can then cut or mark the piece at the correct place.

Reated Projects

Inline testing

  • Input control: Identification of bad quality material, e.g. rolled wire (drawing lines for thick wire), bar, tube or pipe
  • Quality control: Detection of defective areas in tes

Compound tubing

  • Inspection: Identification of weld seam defects in the internal metal layer of compound tubing
  • Diameter: 10-60 mm (0.4-2.4 in)
To guarantee a

Rotational testing

  • Products tested: All seamless products that are round or off-round
  • Production types: Straightening lines, continuous drawing lines, offline final inspection
  • Inspectio

Full-body inspection/Leakage testing

  • Internationally recognized test standards: Leakage testing according to SEP, DIN, ASTM, API, BS, JIS, ETTC, ENEL and others
  • Inspection: Full-body inspection using encircling