Products - Viscometers & Viscotester Range
 





The HAAKE Viscotester
6 plus instrument is a classic rotational viscometer for the fast determination of viscosity as defined in ISO 2555
and many ASTM
standards

 



Helipath

 



Adaptor

Viscometers & Viscotester Range

The HAAKE Viscotester 6 plus & 7 plus units can be used for tests and comparative measurements for quality control according to recognised standards.

The HAAKE Viscotester is a classical rotational viscometer that measures the resistance of a test substance against a pre set speed. The resulting torque or resistance measures the viscosity of the fluid. The higher the torque, the higher the viscosity. Due to the standardised geometry, the shear rates generated can only be determined precisely for Newtonian substances.

Compatibility
The basic ISO 2555 standard describes the design and the characteristic measuring technique of a viscosity measuring instrument (torque, speed, rotor geometry). If a rotational viscometer meets these requirements - as the HAAKE Viscotester 6 plus & 7 plus do - the results comply with the Brookfield method and are 100 % compatible as long as comparable viscometer versions are used.

Standards
The HAAKE Viscotester 6 plus & 7 plus meets the following standards:
BS: 6075, 5350
ISO: 2555,1652
ASTM: 115, 789,1076, 1084, 1286, 1417, 1439, 1638, 1824, 2196, 2336, 2364, 2393, 2556, 2669, 2849, 2983, 2994, 3232, 3236, 3716

Version "L" or "R"?
L is mainly used for low-viscous substances such as diluted solutions, oils, dispersions and emulsions. Milk-like fl uids (2-5 mPas) would be an example at the low end of viscosity and motor oil would represent the high end. The measuring range is from 3 - 6 000 000 mPas.

R for medium-viscous substances is the "standard" viscometer for 80% of all viscosity measurements. It is especially suited for the medium viscosity range extending from sewing machine oil up to PVC plastisols or whipped cream. The measuring range is from 20 - 40 000 000 mPas.

•  Ready to go package - unpack, switch on and start measuring viscosity
•  Digital display of viscosity, % torque, speed, spindle, upper viscosity limit
•  Integrated automatic diagnostic functionality
•  Visual and acoustic signals at critical measuring conditions
•  Digital calibration of the torque with nationally traceable standards
•  Digital speed control with built-in accuracy via step motor

Additional features of the HAAKE Viscotester 7 plus
•  Bi-directional RS232 interface
•  HAAKE RheoWin software (optional) for measurement and data evaluation
•  Temperature sensor Pt100 to monitor the sample temperature

Helipath
•  for comparative measurements on high viscous samples such as creams, pastes, gels etc.
•  up and down movement of the measuring head allowing the needle spindle to cut into fresh material tracing a helicoidal path through the sample

Adaptor
•  stainless steel sample chamber, removable
•  Flow jacket that allows temperature control of the sample between -10degC and 100degC

UL-adapter for low viscosities
•  allows reproducible and accurate measurements of the viscosity from 1.0*mPas for L-models and 6.4 mPas for R-models (* Taylor vortices may result in additional errors.)

AKV-adapter for small samples
•   sample volume from 8 to 13 ml, depending on the spindle used
Technical Specifications
Ambient Conditions
  
Power Supply:
100 - 240V/50-60 Hz
Temperatures:
10 to 40 deg C

Relative humidity :

< 80%

Display:

Eta
dynamic viscosity in mPas (cP) upper viscosity limit in mPas (cP)
% Tau
torque in % of the max. value
n
speed in rpm
#
number of the selected spindle
T
temperature in deg C (only VT7 plus)
Rotational Speeds
0.1 / 0.2 / 0.3 / 0.5 / 0.6 / 1 / 1.5 / 2 / 2.5 / 3 / 4 / 5 / 6 / 10 / 12 / 20 / 30 / 50 / 60 / 100 / 200
Accuracy:
< +/- 0.5% of the absolute value
Torque:
The versions L and R differ in the torque range roughly by a factor of 6. The value displayed is measured with a maximum uncertainty of ± 1 % in relation to the full scale (100 %)
Viscosity range:
Accuracy:
+/- 1% of full scale
Reproducibility:
+/- 0.2%
Version L:
3 - 6.000.000 mPas in 84 ranges (21 speeds with 4 spindles)
Version R:
20 - 40.000.000 mPas in 126 ranges (21 speeds with 6 spindles)

 
 
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• Tel: 03 5367 7477 • Fax: 03 5367 6477 • Email: info@rheologysolutions.com