Controls Group High Performance Rotational Viscometer High Performance Rotational Viscometer

High Performance Rotational Viscometer

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ASTM D2196 | ASTM D4402 | AASHTO T316 | EN 13302
Main features
• Selected speed r.p.m.
• Selected spindle SP
• Viscosity reading cP (mPa·s) or cSt
• Percentage of full scale %
• Sample temperature °C or F
• Shear Rate (with coaxial spindles) SR (s -1)
• Shear Stress (with coaxial spindles) SS (N/m2)
• Density (introduced by the user) g/cm3
• Viscosity reading: dynamic viscosity (cP or mPa·s) or kinematics viscosity (cSt).
• Unit converter SI to CGS.
• Program features:
• Time to torque & Time to stop
• 9 working memories
• Customizable speed options
• Multistep
• Ramp
• AUTO-TEST: automatical internal viscosimeter checking
• AUTO-RANGE: full scale range for combination spindle speed.
• Temperature reading by PT100.
• User-enabled 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

  • Precision: ± 1% of full scale
    • Resolution: 1 For viscosity equal to or above 10.000 cP: 1
    • Repeatability: 0.2%
    • Thermometer features:
    • Temperature margins: 0o C to +100o C 32o F to 212.0 o F
    • Resolution: 0.1o C / 0.1722 o F
    • Precision: +/- 0.1 o C
    • Type of probe: PT100
    • Supplied at 100-240 VAC, 50/60 Hz
  • Shipping weight: approx. 8 kg
  Viscosity ranges (mPa•s)
Spindle models  
TR8 50 – 170 K
TR9 250 – 830 K
TR10 500 – 1.7 M
TR11 1 K – 3.3 M

Ordering info

Rotational Viscometer, high performance version, calibration certificate, USB, WIFI, Bluetooth, temperature sensor, datalogger software and power supply cable. Viscosity range100-40 000 000cP, rotational speed 0.01-200rpm. Conforming to ASTM D2196, ASTM 4402, AASHTO T316, UNI EN 13302.     
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.
220-240V, 50-60Hz, 1 ph

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

Aluminium disposable test chamber

Stainless steel reusable test chamber

Set of 4 stainless steel spindles. (TR8, TR9, TR10, TR11)