Tube wall thickness measurement

Details Tube wall thickness measurement Tube wall thickness measurement

G - Physics

01

B

358/5.1

G01B 15/02 (2006.01)

Patent

CA 1171557

Abstract Apparatus for tube wall thickness measurement has at least one radiation beam transmitted across a tube in more than two directions such that each of at least three pairs of at least three measuring points arranged within the tube wall is passed by a single radiation beam. The apparatus detects the intensities of the radiation beam or beams after having passed through the pairing measuring points and processes the detected values to determine the wall thickness. The invention provides an improvement for preventing radial deflections of the tube during measuring and consists of a plurality of rollers, a device for pressing the rollers to the tube being measured and a control device for regulating the pressing force exerted on the tube such that the tube is held firmly but is not pressed with excessive force. The effect is to minimize deformity of the tube.

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