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Sensors for Tubing

  • Rapid screening of heat exchanger tubing using guided wave testing (GWT) utilizes the capability
of guided waves to travel long distances in the heat exchanger components without essential attenuation.
  • The guided wave probe is inserted into the tube for a distance of 12-24 inches and the waves generated by the probe can be mechanically coupled or generated directly in the tube wall using various electromagnetic techniques.
  • Screening of heat exchanger tubing using GWT has been rapidly developed over the past decade due to the success of this technology in finding anomalies that represent a challenge for conventional nondestructive examination (NDE) techniques.
  • Performance is strongly dependent on tube condition, more localized NDE techniques such as internal rotary inspection system (IRIS) or remote field eddy current (RFEC) should be used to determine the remaining wall thickness of defects detected.

Tube Sensors

Heat exchanger probes are used for guided wave screening of ferromagnetic and non-ferromagnetic heat exchanger tubes, condenser tubing or boilers tubing. The results of testing can be used to identify areas of corrosion and cracking as well as an input for the failure analysis.

  • Characteristics

  • Tube Size 12 to 70 mm (0.5 - 3")

  • Frequency Range 32 to 255 kHz

  • Tube Materials Carbon Steel, Stainless Steel, Brass, Copper, SeaCure, Duplex

  • Guided Wave Mode T (0,1) - Torsional

  • Method of Coupling Dry coupling using bladders
    Shear wave coupling (only slight pressure needed)
  • Temperature Range Standard: 0°C to 60°C