Manual
17
Characteristics of special spindles
Spindle
Shear rate (S. R.)
(Seg.-1)
Sample volume (cc)
TR8
0.93 x rpm
8.0
TR9
0.34 x rpm
10.5
TR10
0.28 x rpm
11.5
TR11
0.25 x rpm
13.0
The stated shear rates (S.R.) have been calculated based on the assumption that the fluids have
Newtonian characteristics.
10.2 Adapter for low-viscosity materials
Measurement range
Model V1L: 0.3* … 2000 mPa s/cP
Model V1R: 3.2* … 21333 mPa s/cP
*High rotational speeds required for very low-viscosity measurements can have a negative influence on
viscosity readings.
*Viscosity measurements have to be carried out under laminar flow conditions as turbulent flow conditions
can cause erroneously high viscosity values.
Description
An adapter for low viscosity materials is available as an accessory for precision spindles which rotate
within a sample container. To maintain an accurate temperature control, the sample container is located
within a water mantle. The adapter including the LCP spindle must be ordered separately. This spindle
enables low viscosity fluids to be analysed, giving accurate reproducible readings, including shear rates.
This accessory can be ordered in three variations:
Standard adapter
Adapter with a temperature sensor in the lower cap to enable direct temperature monitoring.
High temperature adapter. The test fluid
’s temperature is controlled by immersing the container
into a temperature-controlled bath. The upper and lower caps of the sample container are made
of Teflon (PTFE), supporting temperatures of up to 200 °C.
