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Dynamic Shear Rheometer – DSR-III


The Dynamic Shear Rheometer – DSR-III incorporates technological innovations that enable optimal flexibility in rheological test capabilities and protocols.

  • Grade testing to industry standards such as AASHTO and EN specifications with Time-Temperature Superposition for master curve generation.
  • All modes of rheological operation – stress control, shear rate control and direct strain controlled oscillation at demand strain amplitude for accurate control of sample strain history.
  • Unique rSpace software interface that offers total flexibility of test set-up – from sequence-driven Standard Operating Procedure (SOP)-type functionality to fully customisable test design.
  • Intelligent geometry recognition with full auto-configuration and user feedback on system status to guarantee robust data for all measurements.
  • Complete sample history from the point of loading onto the rheometer available in data file as standard – because ensuring reliable rheology data for complex materials like asphalt actually starts before a measurement takes place.
  • Exceptional vertical travel and gapping capabilities with ultra-responsive and highly sensitive normal force system for class-leading performance.
  • Unique ‘plug and play’ cartridge system for all temperature and environmental controllers – all mechanical, power, communication and fluid connections made in one simple action.
  • Multi functional accessory design – plate cartridges with interchangeable lower plates and cylinder cartridges with interchangeable cups – for a cost-effective solution and widest application coverage.


  • AASHTO TP 70-90
  • AASHTO T315


Accessories are not included in the price of main device (unless stated otherwise) and may be purchased separately if required.

CRT-EQU0111 DSR Silicon Rubber Mould Set
CRT-EQU0639 Asphalt Temperature Calibration Device
CRT-DSR-REC Software for DSR for MSCR analysis
CRT-DSR-KIN-COMP Oil-Free Compressor


Technical specifications are subject to change without notice.

Modes of operations Direct strain control. Shear rate control.
Shear stress control.
Torque Range 100nNm to 150mNm. (Viscometry –
Controlled Rate and Controlled Stress)
Torque Range 100nNm to 150mNm. (Oscillation –
Controlled Strain and Controlled Stress)
Torque Resolution 0.1 nNm
Position Resolution <10nrad
Angular velocity range: 10nrads-1 to 200rads-1
Step change in strain: <10ms
Frequency range: 6.28µrads-1 to 628rads-1 (1µHz to 100Hz)
Motor inertia 13µN.m.s2
Normal Force range 0.001N to 20N
Normal Force resolution: 0.5mN
Normal Force response time: <10ms
Vertical lift speed: 0.1µms-1 to 20mms-1
Gap resolution (over full vertical lift range): 0.1µm
Fully configurable vertical profiles: By speed and by Normal Force
Raw instrument variables: 5kHz constant streaming data
Complete sample history: Data available from loading to unloading as standard
Interface USB2 – Plug and play
Quick-connect geometries Auto-identification and auto-configuration
– plug and play
Interchangeable lower plates: Varying pedestal plate diameters and surface
finishes plus a range of cylinders including specific
configurations for crumb rubber and solids testing
Cartridge environmental controllers Auto-identification and auto-configuration – plug and play
Temperature range -40°C to 150°C (Peltier plate and active hood cartridges).
-30°C to 150°C (Peltier cylinder cartridge), 0°C to 300°C
(High temperature cartridge)
Temperature resolution: 0.01°C
Dimensions mm (W x D x H) 490 x 485 x 680
Weight (approx.) Kg 47
Power V 110 or 220
Operating temperature (°C) 15°C – 40°C
Humidity 35% – 80% non-condensing
Software Complete Asphalt and rheometer package