Internal geometry tool

Details Internal geometry tool Internal geometry tool

G - Physics

01

B

33/162

G01B 3/18 (2006.01) G01B 3/26 (2006.01) G01B 7/13 (2006.01) G01B 7/287 (2006.01)

Patent

CA 1166002

ABSTRACT A pig for monitoring the internal surface profile of a pipeline carries a plurality of sensors to trace the surface as the pig traverses the pipeline. Output signals from the sensors are compared with an expected value and a reference signal generated when they differ by more than a predetermined amount. The sensor signals are recorded simultaneously with the reference signal.

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