Controls Group High Performance Rotational Viscometer High Performance Rotational Viscometer

High Performance Rotational Viscometer

ASTM D2196 | ASTM D4402 | AASHTO T316 | EN 13302
Main features
  • 12-key touchpad keybord
  • Direct readout on a graphic display
  • Data displayed:
    • Selected speed
    • Selected spindle
    • Viscosity reading
    • Percentage of full scale
    • Sample temperature
    • Shear rate (with coaxial spindles)
    • Shear stress (with coaxial spindles)
    • Density (entered by the user)
    • Step program status
    • Analysis and visual characteristics (flow curves)
    • Viscosity reading: dynamic viscosity (cP or mPa•s) or kinematics viscosity (cSt)
  • Program features:
    • Time to torque: target torque pre-setting device
    • Time to stop: target time pre-setting device
    • 10 working memories
    • Customizable options
    • Programmable
    • Multistep
    • Ramp
  • AUTO-TEST with visual and audible malfunction alarm
  • AUTO-RANGE function
  • Temperature reading
  • User-enable viscosity and temperature calibration
  • 10 language options
General description
General description
Apparent viscosity of unfilled asphalt is evaluated by a rotational viscometer  which measures the torque generated by a calibrated spindle rotating at a selected speed into a bitumen sample heated at  precise temperature in the range between ambient temperature to 260°C. The measured relative resistance to rotation is converted, by a factor,  in viscosity units, cP or mPa·s. 

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Technical specifications

  • Viscosity  range: 100 – 40,000,000 cP
  • Rotational speed range: 0.01 – 250 r.p.m.
  • Selectable speeds: 2600
  • Resolution:
    • Using low viscosity adapter: 0.01 cP
    • For viscosity lower than 10,000 cP: 0.1 cP
    • For viscosity equal to or above 10,000 cP: 1 cP
    •  Repeatability: 0.2%
  • Thermometer features:
    • Temperature margins: 0 °C to 100 °C; 32 °F to 212.0 °F
    • Resolution: 0.1 °C; 0.1722 °F
    • Precision: +/-1 °C; +/- 2° F
  • Shipping weight: approx. 8 kg
81-PV0118/A Viscosity ranges (mPa•s)
Spindle models  
TR8 20 – 500 K
TR9 100 – 2.5 M
TR10 200 – 5 M
TR11 400 – 10 M

Ordering info

Rotational viscometer, high performance version, supplied complete with stand, boss head, spindle protection, spindle rack, calibration Certificate, USB cable, Datalogger software and power supply cable.
100-240V, 50-60 Hz, 1Ph


The control unit consist of a heating chamber that is used to work in conjunction with rotary viscometers at high temperatures. Viscosity of solid road unfilled asphalts has to be measured at  temperatures ranging from 34°C to 260° according to the Specifications of ASTM D4402. The heater contains the container with sample  in which a suitable spindle is immersed and driven by the rotary viscometer to measure viscosity. A digital microprocessor control unit grants the required accuracy of test temperature.

Temperature control unit  with temperature range from ambient plus 5°C to 300°C. Complete with set of 4 spindles. 
220-240V, 50-60Hz, 1 ph

As above but 110V, 50-60Hz, 1 ph

Aluminium disposable test chamber

Stainless steel reusable test chamber