The thrust rollers on a rotary kiln need to be positioned in line with the kiln axis or only a few millimeters towards the in-running side. This new method allows to measure the position precisely and fast while the kiln is in operation. The specially made 360° prism is tracked and measured by the theodolite while it is rotating on the roller. The software, the Measurement Studio, fits a circle into the measured points and calculates the center position of the thrust roller.
