Flatness measurement of tower flanges
If flatness measurement of the flanges is difficult depends, among other things, on the diameter of the tower. Smaller diameters (up to 4 meters) are usually straightforward to measure. Large diameters, especially for large offshore towers, however, require a different approach.
The measurement systems used (E910 or E915) are basically the same, but our patented sectional measurement software is ideal for use for large diameters. With it, the flange is measured as four sections, which are then mathematically combined for a complete result. There are two main advantages; the measurement is not affected by the flange being deformed by its own weight (gravitational impact), and it also makes the work safer for the technician, who does not have to stand on a high ladder or platform – all measurement takes place from ground level. See more in this video.
You can measure up to 5 circles with measuring points per flange, and check not only the flatness but also the angle ("taper") of the flange relative to the flange plane for correct joining of the tower sections. Immediately after completion of the measurement, you can view the result as a 3D image in the display unit and evaluate the results with different best-fit calculations for possible further processing. This can be done directly on site, without having to go to a PC with separate analysis programs, which streamlines the work.