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ID-OD discrimination sensor

  • US 20070022830A1
  • Filed: 07/29/2005
  • Published: 02/01/2007
  • Est. Priority Date: 07/29/2005
  • Status: Active Grant
First Claim
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1. A sensor body for use in a pig for determining characteristics of a pipeline wall though which the pig passes, the sensor body comprising:

  • a circuit board;

    a single coil wrapped around the circuit board;

    a microcontroller mounted to the circuit board and connected with the single coil for inducing a waveform on the coil to thereby create an eddy current in the pipeline wall adjacent the sensor body, and the microcontroller measuring changes in a characteristic of the induced waveform on the single coil that correspond to the presence of anomalies on an inside diameter of the pipeline wall, and a sensor body cover molded about the circuit board, the microcontroller and the single coil, and the sensor body cover consisting essentially of a wear resistant, non-conductive material that includes a polymer material.

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