Page 36 - ITAtube Journal 3 2025

Press releases
Fig. 3: 3D-point cloud of the pipe’s inner surface.
Fig 4: measuring unit for determining streightness
Fig 5: straigtness measurement
sleeves, the cable length inserted into the
bore hole will be measured for information
on distance. A special cable guide with
integrated encoder is available.
In the case of mounting the CiTriS on a
lance, which is inserted into the bore, the
encoder will be mounted directly on the
lance guide.
3D-measurement
By using this information, software can
assemble all cross sections with precise
depth information to create a point cloud
of the inner surface of the pipe. The result
is a complete 3D-model of the pipe.
The complete model can be dimensioned
and analysed, with the ability to highlight
and dimension defects. For the application
of third party external 3D analysis software,
STL-export is available.
Straightness determination
To determine the straightness of a pipe, an
additional point laser is radiated through
the pipe from the opposite opening as a
benchmark.
CiTriS will be guided slidable and approx-
imately centrical, e.g.mounted on a roller
carriage, into the bore opening.
A module consisting of a camera and a fo-
cusing screen is attached to the front of the
CiTriS to detect the directional laser.
The laser beam serves as an absolutely
straight reference line. The detection unit is
moved along this reference line in the pipe.
Here, the offset to the reference line is con-
tinuously measured by the local detection
of the laser point on the screen. A possible
displacement of the detection unit from the
center of the bore hole can be corrected
using the measurement values from CiTriS.
The result provides the offset of the center
point of the respective tube cross-section
to the reference line at each measurement
position. This corresponds to the straight-
ness of the tube.
GL Control GmbH
Grete-Schickedanz-Str. 9
55545 Bad Kreuznach-Planig
Germany
Tel: +49 (0)671-88768-310
sales@gl-control.de
https://gl-control.de/
36 ITAtube Journal December 2025