Description

The RRT-4640 allows 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. T

he technique used to calculate the height and offset values enables objects to be measured even if they are below rail level.

Features:
Fully Insulated GRP and Nylon construction
Less than 30 second setup time
Super Elevation
6 Foot measurements
Over head line (OHL) height and stagger positions
REFOS
Tunnel Clearances
Platform gauging
Offset calculation software
Includes Dell AXIM or equivalent PDA with chargers,
software, and cables
Supplied with the Hilti PD30 with removable cradle

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.

Technical Data:

Weight: 17.7 lbs Assembled
28 lbs Bagged
Dimensions: Length – 57.1 in
Width – 59 in
Height – 17.7 in
Measures
Distance Offset: 320 ft ± 0.039 in
Measures
Height Offset: 320 ft ± 0.039 in
Measures
Incline: 360º ±0.05º
Measures
Super-Elevation: ±7.9 in

GAGE