Models discontinued - Successor models available
Please note:
the Haake Viscotester 6 Plus and 7 Plus are not available anymore due to a model change.
The succeeding models Viscotester C, D and E can be found here.
Accessories and service are still available!
Application
The Thermo Scientific HAAKE Viscotester 6 plus & 7 plus units can be used for tests and comparative measurements for quality control according to recognized standards.
Measuring principle
The HAAKE Viscotester is a classical rotational viscometer that measures the resistance of a test substance against a preset speed. The resulting torque or resistance measures the viscosity of the fluid. The higher the torque, the higher the viscosity. Due to the standardized 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 and 7 plus do) the results comply with the Brookfield method and are 100 %-compatible as long as comparable viscometer versions are used.
L for low viscous samples
This version is perfect for low viscous samples like diluted solutions, oils, dispersions and emulsions. The lower viscosity limit is represented by liquids similar to milk (~ 5 mPas), the recommended upper limit is in the range of motor oil.
| Viscosity range (theoretic) | 3 .. 6.000.000 mPas |
| Viscosity range (typical) | 5 .. 5.000 mPas |
R for medium and high viscous samples
This version is the standard viscometer for about 80 % of all measurements. Diese Version ist das Standard-Viskosimeter für 80 % aller Viskositätsmessungen. The best performance is given in the medium viscosity range from sewing machine oil to PVC, plastisols or pudding.
| Viscosity range (theoretical) | 20 .. 40.000.000 mPas |
| Viscosity range(typical) | 50 .. 100.000 mPas |
Standards
The HAAKE Viscotester 6 plus & 7 plus meet 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
Common features of HAAKE Viscotester 6 plus & 7 plus
- 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
- 2 years warranty for the most stable measuring instrument in its class
Additional features of the HAAKE Viscotester 7 plus
- Bi-directional RS232 interface
- Thermo Scientific HAAKE RheoWin software (optional) for measurement and data evaluation
- Temperature sensor Pt100 to monitor the sample temperature
Technical Data
| Viscosity range | Version L: 3 .. 6.000.000 mPas (theoretical) Version R: 20 .. 40.000.000 mPas (theoretical) |
| Rotatinoal speeds (pre-setting) | 21 settings: 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 rpm |
| Accuracy | 0,5 % FSD |
| Reproducibility | 0,2 % |
Additional Adapters
UL-adapter for very low viscous samples
- For accurate and reproducible measurements with very low viscosities
from ~1,0 mPas with L-Version
from ~6,4 mPas with R-Version (Taylor vortices kann cause errors)
- Sample volume 16 to 18 ml
AKV-adapter for small sample volumina
- To measure sample with only small volumina available
- Sample volume 8 to 13 ml