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This device was
developed for use by paving contractors for quality control/quality assurance on
paving projects.
Its lightness and low tire pressure make it the ideal choice for operation on
newly constructed Portland Cement Concrete pavements.
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The Dynatest 6450 Light Weight Profilometer®
with dual sensors
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Dynatest patented Model T3000IR non-contact infrared sensor |
Optionally equipped with two sensors, both
wheel paths can be profiled simultaneously.
International Roughness Index (IRI) is reported on a real-time basis.
Pavement elevation data is calculated at 1 inch (25.4mm) intervals and
recorded at user-selectable intervals.
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Calibration blocks
for calibration of sensor.
Reflective cone for auto start data
collection seen on left.
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Post-processing software,
provided with each LWP, provides the following additional functionality:
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Profilograph modelling,
including calculation of PI and locating bumps.
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Conversion of profile
elevation data to the format specified in Texas Department of
Transportation's
Tex-10001S specification.
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Calculation of Mays Ride
Meter statistics.
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Determination of must-grind
quantities and locations.
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Click to enlarge
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The
heart of the Light Weight Profilometer®
is a PC/104 based computer linked by an Ethernet cable to a standard
notebook computer.
The notebook runs a user-friendly Windows-based field data collection
program that comprises the interface between the LWP and operator.
The LWP utilizes a Dynatest patented Model T3000IR non-contact infrared
sensor combined with an accelerometer to calculate inertial profile
elevations.
The T3000IR sensor has a 10 inch (254mm) standoff with a +/- 3 inch (+/-
75mm) operating range.
Completing the system is a wheel-mounted
distance encoder and optional printer.
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Data collection Laptop mounted for easy
operator viewing.
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ASTM E950
The LWP has been independently
verified to meet Class 2 requirements of
ASTM E950-98 "Standard Test Method for Measuring the
Longitudinal Profile of Travelled Surfaces with an Accelerometer
Established Inertial Profiling Reference", and also meets TxDOT
TEX-10001-S.
Typical precision and bias numbers are 0.014 inch (0.36mm) and 0.031
inch (0.79 mm) respectively, when using a 200 ft (61 m) wavelength
cut-off filter.
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Within the ranges outlined in
the specifications the accuracy of the profile elevations and roughness
statistics are negligibly affected by variations in vehicle weight, speed,
temperature extremes, sunlight, wind, and pavement colour and texture. |
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| The Fugro-owned
Lightweight Profilometer® has been certified by the Texas
Transportation Institute as meeting Texas Department of
Transportation requirements for precision and bias with respect to
measurement of pavement profile elevations. |
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Dynatest 6450 LWP
Specifications
(137 Kb, .pdf format)
6450 Operation Manual
(340 Kb, .pdf format)
 6400
Streaming Video for Windows® Media Player
(972 Kb .wmv File)
 6400
SureStream Video for RealPlayer®
(598 Kb .rm File)
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Click here for
Equipment Service and Support Departments
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Download brochures in PDF format for printing.
6450 Lightweight.pdf
file (104 Kb) |
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Dynatest
International
Rev. 040101-10 |
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