High Performance Rotational Viscometer


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. 


• 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.


  ASTM D4402‰AASHTO T316‰EN 13302‰ASTM D2196

Technische specificaties

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 
TR850 – 170 K
TR9250 – 830 K
TR10500 – 1.7 M
TR111 K – 3.3 M


Order nummers


Rotational Viscometer, high performance version. 100-240V/50-60Hz/1ph.


Accessoires & toebehoren


81-PV0118/T: Temperature control unit for rotational viscometer. Temperature range from ambient plus 5°C to 300°C. 220-240V/50-60Hz/1Ph. 81-PV0118/TZ: Temperature control unit for rotational viscometer. Temperature range from ambient plus 5°C to 300°C. 110V/60Hz/1ph 81-PV0118/2: Aluminum disposable test chamber 81-PV0118/3: Stainless steel reusable test chamber 81-PV0118/4: Set of special spindles for APM and thermosphere (TR8, TR9, TR10, TR11) Range: "R": (40 - 400.000) cP, "H": (2 - 32.000) Poise Material: Stainless steel. 316 Suitable for viscometer R y H: