Thermo Scientific HAAKE RotoVisco 1 Instruction Manual page 77

Fig.2: the rheological behavior of a bitumen in dependence on the the temperature
Temperature Control Units
Tests at constant shear stress or frequency as function of
programmed variable measuring temperatures are also usual:
see example in Fig. 2.
The upper measuring plates for the SHRP sensor system
has shafts with a ceramic segment to minimize heat losses up
or downwards. Attention: these ceramic shafts can break!
These special measuring plates with ceramic shaft seg-
ments are longer than the standard measuring plates of the
HAAKE rheometers. This overlength necessitates the use of
an elongation (standard accessories) of the micrometer
shaft -- at least while using former rheometer models. For
this the end piece of the shaft is screwed off, the elongation
piece is screwed in and after that the end piece is put on
again.
The SHRP sensor system must be adjusted to a gap width
of h=0 before starting a test series. This should be done at
measuring temperature which means it should be done
while the the bath liquid already floats the two measuring
plates adjusted to set temperature.
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