The Research Grade Asphalt Dynamic Shear
DSR, is a research grade Dynamic Shear Rheometer specifically
designed for the testing of asphalt binders according to AASHTO T315-05
VISCOANALYSER DSR exceeds all of the SHRP instrument requirements.
The instrument comes standard with 8 and 25 mm parallel plates, but
is also available with various plate/plate and couette measuring systems.
The instrument features a wide torque and frequency range utilizing
a low inertia air bearing coupled with a high resolution angular displacement
sensor. In addition, it comes standard with automatic gap setting
stage control and quantitative normal force loading capability. The
instrument is built around a dedicated, on board 32 bit computer for
unprecedented performance, versatility, and reliability. A built in
modem allows for remote control operation, remote service diagnostics,
and software updates. The user interface is a true Windows environment
including multitasking and universal file structure for data exportation
to any other Windows program. No interface card is required allowing
the instrument to operate with a notebook computer. Standard software
allows frequency sweep testing and a special SHRP program provides
binder specification testing at 10 rad/s.
VISCOANALYSER DSR was specifically designed with resistively
heated lower plate and radiant heated upper plate, rather than the
conventional water circulating bath systems. Resistively heated systems
possess inherently faster transient response times, and do not have
the problems associated with water baths including water level, water
absorption into test samples, and sample insertion onto wet plates.
Gradients between the two plates are better than 0.1°C and heating/cooling
rates in excess of 20°C/min are possible.
|Exceeds all SHRP instrument
|True MS Windows user interface
with frequency sweep capability including 10 rad/s.
|Automatic gap zero and automatic
gap setting with user selectable normal force loading.
|Dry, resistively heated upper/lower
furnace with heating/cooling rates to 20°C/min.
for thermal expansion of measuring systems (patent pending)
|Built in communication port
for remote service diagnostics, remote control operation, and
| Air bearing design.
-15 to 400°C with user programmable temperature profiles.
|ISO 9001 approved.
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