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3
clamped into position, the measurement laser is then attached.
The Datum Laser Gauge measures height and distance offsets by using the
measurement laser. The laser has five location holes on the vertical and
horizontal arms of the gauge, by measuring an object from at least two of these
positions the PDA software is able to calculate the height and distance offset of
the object/location to the running edge of the rail.
The horizontal arm of the gauge houses an inclinometer; the readings taken from
this together with those from laser enable the software to calculate the super-
elevation of the track which can be used for platform gauge working.
Once the data is input into the PDA it can be saved to file and then downloaded to
a PC and kept as a permanent record of the survey.
For increased speed or for measuring bridge arches, a second laser can be used
to locate the position of non-fixed points.
Datum plate height & offset measurement
Platform gauging (including cant measurement/allowance)
Structure gauging
Super-elevation
OHL height and stagger position
Weight
Dimensions
Distance Offset
Height Offset
Cant
-
8.0kg
-
1620mm x 1510mm x 265mm (in use)
1620mm x 315mm x 265mm (folded)
Range: 0 – 100m
-
Accuracy: ± 2mm
Resolution: 0.1mm
Range: 0 – 100m
-
Accuracy: ± 2.0mm
Resolution: ± 0.1mm
-
Range: 0 - 45°
Accuracy: ± 0.2°
Resolution: 0.1°
4610-1 Issue 04
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