Abtus ABT 4610 Laser Offset Gauge User manual

4610-1 Issue 04
ABT4610
Laser Offset Gauge
Instruction Manual

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1.0Index
1.0 Index 1
2.0 Item List 2
3.0 Specification 2
4.0 Getting Started 2
4.1 Overview 2
4.2 Assembly 4
4.3 Measuring Super Elevation 5
5.0 Operating the Gauge and Software 5
1Turn on the Control Unit by pressing and holding the on button
(please refer to manufacturers instructions as control units can vary). 5
6.0 Maintenance 7
6.1 Before Each Use 7
6.2 Every 3 Months 7
6.3 Annual 7

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2.0Item List
1. 1off Height and Stagger Gauge
2. 1off PDA (Personal digital assistant)
3. 2off Hilti PDE Laser
4. 2off Laser Carriage
5. 1off Platform Square
6. 1off Instruction Manual
7. 1off Hilti Documentation
8. 1off PADDED BAG
3.0 Specification
Features
1 Fully insulated
2 Expected Battery Life—1year (Inclinometer)
3 Back Light on laser display for Night/Tunnel work
4.0Getting Started
4.1 Overview
The ABT 4610 is the latest edition to the Abtus data-logging range. The purpose
of the product is to allow the user to take height and distance offset readings from
the running rails to a desired object or position.
Height and Offset values are displayed on a PDA allowing the operator on
track/site exactly what has been measured at that given position. These values
are calculations of measurements taken from a laser and inclinometer fitted to the
gauge. The technique used to calculate the height and offset values enables
objects to be measured even if they are below rail level.
The tool is constructed from lightweight GRP and Nylon with a weight of just
8.0kg, ensuring that the gauge is insulated from the track circuit. Set up time is
less than 30 seconds. The vertical and horizontal sections are unfolded then
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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
-
8.0kg
Dimensions
-
1620mm x 1510mm x 265mm (in use)
1620mm x 315mm x 265mm (folded)
Distance Offset
-
Range: 0 –100m
Accuracy: ± 2mm
Resolution: 0.1mm
Height Offset
-
Range: 0 –100m
Accuracy: ± 2.0mm
Resolution: ± 0.1mm
Cant
-
Range: 0 - 45°
Accuracy: ± 0.2°
Resolution: 0.1°

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4.2 Assembly
1. Unfold the Vertical Beam and locate the free
end of the Diagonal Beam into the Locking
Knob in the middle of the Vertical Beam.
Ensure that the Locking Knob is located into
the recess of the Locking Plate (as shown in
figure 1).
2. Tighten all the knobs.
3. Place the Laser Range-finder into the Laser
Carriage by extending the front, sprung plate
(as shown in figure 2).
4. Carry the tool to the point on the rail opposite
the measurement target.
Place the Laser Carriage into an appropriate
Pivot Socket and lock in the socket using the
Locking knob attached (as shown in figure 2).
Switch the Laser Rangefinder on to ensure
that
laser falls onto target.
5. Switch on Inclinometer and Laser Rangefinder.
Removing the Offset Gauge from the track
6. Remove the equipment between locations. Fold down in reverse of
assembly.
Figure1
Figure 2

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4.3 Measuring Super Elevation
The super elevation is displayed in positive or negative degrees (°) on the
inclinometer screen. The SE is negative when the adjustable end is higher.
5.0Operating the Gauge and Software
1. Turn on the Control Unit by pressing and holding the on button (please
refer to manufacturers instructions as control units can vary).
2. Select 1 of three options 'New File' (starts new file), 'Open File' (opens
existing file) & 'No Save' (starts new file without option to save).
Enter a file name and then select appropriate button for type of
measurement required 'Dat' (Datum), 'Plt' (Platform) & 'O/H' (Overhead).

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Calculates Datum using pivot sockets A, B & C.
Calculates Platform using pivot sockets A, B & C.
Calculates Overhead using pivot sockets A, D & E.
3. To obtain measurement values enter each laser reading taken from the
specified pivot sockets (see above), and a 'Tilt' (Super Elevation) reading
from the inclinometer into PDA and press calculate. (Indicated in image
below)
4. To enter a reading into PDA tap once on each white box and use the
keypad that appears.
5. If an error occurs (as image below) then one or more laser readings taken
were not accurate and all three must be taken again.
Note: Using all three Pivot Sockets gives best accuracy. When necessary to use
two only, then Pivot Sockets A+C is more accurate than A+B or B+C. Accuracy is
dependent on distance and height of target.

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6.0Maintenance
6.1 Before Each Use
1 Check that the bearing surfaces that are in contact with the rail are clean
and can move freely
2 Ensure that the vertical beam locks firmly into place
3 Ensure all batteries are fully functioning
6.2 Every 3 Months
1 Visually check for damage
6.3 Annual
To ensure that the accuracy of your ABT4610 remains within specified limits, it
should be returned to your local distributor for annual re-calibration.