Probe head orientation indicator

Details Probe head orientation indicator Probe head orientation indicator

1996-08-30

1998-06-02

Chilcot, Richard

Measuring and testing

Vibration

By mechanical waves

73 405, 738658, G01N 2904

Patent

active

057603065

ABSTRACT:
An apparatus for determining both the axial and angular positions of a defect in a tube wall. The apparatus includes a probe head positioned at the end of an elongated probe carrier having an imbedded orientation indicator. In the preferred embodiment, an encoder measures the angular orientation of the probe head when facing the defect relative to the angular orientation of the carrier and a photodetector and reflective strip measure the angular orientation of the carrier relative to a known orientation. A data processor uses this data to calculate the angular orientation of the probe head and the location of the tube defect.

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