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- [ Hand Held Analytical Viscometer ]
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Digital Viscometer ]
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meter ]
- [ Rotational Viscometer
VISCO STAR plus ]
- [ Viscosity Standard ]
- [ Viscometer - Visco Ball ]
- [ Viscometer - Visco Basic ]
- [ Viscometer - Visco Elite ]
- [ Viscometer - Visco Star ]
- [ Zahn Cup Viscometer ]

Rotational Viscometer Visco Star Plus
Viscosity measurement without limits

rotational_viscometer_viscostar.jpg (10930 octets)Description

The viscometer operates by the principle of rotation of a cylinder or disc (spindle) which is submerged in he material to be analyzed, measuring the resistance of the substance at a pre-set speed. The resulting resistance or torque is the measurement of the flow viscosity. The greater the resistance of the product to be determined, the greater the viscosity.

Based on the speed and the characteristics of the spindle, the torque is calculated and a direct reading of the viscosity is provided in cP (CGS) or mPa-s (lS).

Visco Star Plus viscometers are equipped with different types of spindles and speeds which provide a wide range of measurement of viscosities.

The great versatility of the Visco Star Plus viscometers make them ideal tools for all kind of users, being used in quality control laboratories as well as industrial facilities where manufacture is performed, no matter how demanding or hard the working conditions are. The high quality and reliability of our equipment allow us to offer a 2-YEAR GUARANTEE.

Standards

The design of the standard spindles and the measurement principles of    viscometers are as described in ISO 2555 and ISO 1652 standards.

Main Features

  • Direct readout of all measurement parameters on an illuminated Liquid Crystal Display.
  • Data on screen:
    • Speed selected: r.p.m.
    • Spindle selected: S.P.
    • Viscosity reading: cP (mPa-s) or cSt
    • Percentage of full scale: %
    • Sample temperature: °C or °F
    • Shear rate (with special spindles): SR
    • Shear stress (with special spindles): SS
    • Density (to be entered by user): g/cm3
  • Determination of relative viscosity and absolute viscosity
  • Different menu options
  • Up to 10 working memories can be stored
  • The data recorder in CGS can be converted to lS
  • AUTO TEST of the equipment by scanning at different speeds, with audible and visual warning if it is not operating properly.
  • Temperature determinated by PT100 probe
  • Viscosity reading: dynamic viscosity (cP or mPa-s) or kinematic viscosity (cSt).
  • Datalogger function of the  obtained results when an experiment is performed. The equipment is supplied with Windows software which can dump the data obtained to a file in Excel format (.xls) for subsequent processing.
  • Determination of shear rate and shear stress with coaxial spindles.
  • The viscometer and the PT100 can be calibrated by the user.
  • Auto range function to determine the maximum viscosity with each spindle/speed combination.
  • It can work with a plotter.
  • Ultra-sensitive front keyboard that allows easy input of all parameters.
  • Progressive decrease in speed every time the rotation is brought to a stop, avoiding sudden shakes in the spindle.
  • "ERROR" message in the screen with sound alarm when the viscosity of the test material exceeds the full scale of the selected combination (SP/r.p.m.)
  • Sound alarm if the equipment is working at under 15% of selected full scale.
  • The viscometer is equipped with 19 pre-sets speeds, from 0.3 to 200 r.p.m. The user can select another different speed into this margin.
  • Safety protection against sudden rises in the power supply.
  • Different language options.
  • Anti-slip stand.

Technical file

  • Direct reading in cP (mPa-s) or cSt for the VISCO STAR PLUS L and VISCO STAR PLUS R  models.
  • Direct reading in Poise or Strokes for the VISCO STAR PLUS H model.
  • Accuracy: ± 1% of the full scale.
  • Resolution:
                    Using LCP (Low Viscosity Adapter): 0.01
                    When viscosity is lower than 10,000 cP: 0.1
                    When viscosity is equal or higher than 10,000 cP: 1
  • Repeatability: 0.2%
  • Thermometer characteristics:
    Temperature ranges
                from 0.0 °C to + 100.0 °C
                from + 32.0 °F to + 212.0 °F
    Resolution: 0.1 °C / 0.1722 °F
    Accuracy:: ±0.1°C
    Type of probe: PT 100
  • Outputs: RS232, plotter.
  • All models are supplied with 85/265 VAC
  • Net weight: 5 kg.
Model Measuring range Fixed speeds in r.p.m.
VISCO STAR PLUS L 15 - 2,000,000 Cp 0.3 - 200
VISCO STAR PLUS R 100 - 13,000,000 Cp 0.3 - 200
VISCO STAR PLUS H 2 - 1,060,000 Cp 0.3 - 200

The equipment is supplied complete in a carrying case with spindles, spindle holder, protector, base stand and mechanical nut. Windows software is also provided for dumping the data from the viscometer to the PC. 

Spindles

The spindles are manufactured in AISI 316 stainless steel. They can be identified by the appropriate number and letter and are easily interchangeable depending on the range of viscosity to be determined.

Accessories

LCP: Low Viscosity Adapter: Performs accurate, reproducible measurements of viscosity starting at 1 cP.
Sample volume from 16 to 18 ml. includes circulation jacket which provides thermostatization of the sample between - 10 °C and + 100 °C. Supplied with special spindle.
LCP/B: Low viscosity adapter without circulation jacket. Performs accurate, reproducible measurements of viscosity starting at 1 cP.
Sample volume: from 16 to 18 ml. Supplied with special spindle.
APM: Adapter for small samples. Performs extremely accurate measurement of viscosity and determinations of shearing percentage. Includes circulation jacket which provides thermostatization of the sample between - 10 °C and + 100 °C. Sample volume: from 8 to 13 ml.
APMB: Adapter for small samples without circulation jacket. Performs extremely accurate measurements of viscosity and determinations of shearing percentage. Sample volume : from8 to 13 ml.
HELDAL: Unit with helicoidal motion. Specially recommended for materials which do not flow easily such as cream, paste, gel, etc. Supplied with a coupling unit and 6 "T" needle spindles.
ELECTROTEMP: Temperature control unit. Sample volume: from 8 to 13 ml. Thermostatization of the sample by 3 Peltier cells. Temperature range from + 15 °C to + 150 °C.
THERMOVISC: Different circulators to thermostizate the samples, are available.
STANDARD SILICONE OILS: For calibration of any rotational viscometer. Standards oils with different viscosities are available.

Other viscometers

  • VISCO BASIC
  • VISCO ELITE
  • MULTI VISC
  • VISCO BALL (Falling ball viscometer)