Patent ID: 8345266

Claim:
A system for measuring a refractory lining of a vessel by an electromagnetic radiation emitting and receiving device comprising: (a) a means for scanning by the electromagnetic radiation emitting and receiving device from a first scanning position at least a first mark having a known position in a coordinate system based on the vessel, a second mark and a third mark and for scanning from a second scanning position at least a plurality of points on the refractory lining; (b) a means for moving the electromagnetic radiation emitting and receiving device along a predetermined path from the first scanning position to the second scanning position where the electromagnetic radiation emitting and receiving device scans at least two of the first mark, second mark and third mark in the coordinate system of the vessel; (c) a means for determining an initial reference position and heading of the electromagnetic radiation emitting and receiving device in the coordinate system in relation to the first mark, second mark and third mark and for determining positions of the at least two of the first mark, second mark and third mark which were scanned from the second scanning position based on the scanning of the at least two marks from the first scanning position and for determining an internal contour of the refractory lining of the vessel from data generated by the scanning of the plurality of points on the internal contour of the refractory lining of the vessel; (d) a means for cooling the electromagnetic radiation emitting and receiving device; and (e) a means for supporting the electromagnetic radiation emitting and receiving device, the means for cooling the electromagnetic radiation emitting and receiving device, the means for moving the electromagnetic radiation emitting and receiving device from the first scanning position and to the second scanning position.