VISCOTECH DSR
The Research Grade Asphalt Dynamic Shear Rheometer

REOLOGICA Instruments AB has released VISCOTECH DSR,
a research grade Dynamic Shear Rheometer specifically designed
for the asphalt industry. VISCOTECH 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 network 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.

VISCOTECH 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 0.1C and heating/cooling rates in
excess of 20 C/min are possible.

Key Features:

• Exceeds all SHRP instrument requirements
• 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
• Resistively heated upper/lower furnace with heating/cooling rates to 20C/min.
• Automatic compensation for thermal expansion of measuring systems (patent pending)
• Built in communication port for remote service diagnostics, remote control operation and software updates
• Air bearing design
• Temperature range -15 to 600 C with user programmable temperature profiles
• ISO 9001 approved

Technical Specifications Are Available By E-Mail Request

Send mail to info@reologica.com
Scheelevägen 30, S - 223 63 Lund, Sweden,
Phone +46 46 12 77 60, Fax +46 46 12 50 57