Ametek BROOKFIELD DVNext Operation Instructions Manual page 20

Choose Spindle: There are two options for spindle selection. The first option is that the Wizard will recommend the
spindle to use, which is shown by the blue arrow in the figure below (see Figure 2-9). The second option will allow a
spindle to be selected by manually entering the spindle code as shown via the yellow arrow (see Figure 2-9).
The DVNext will alert the user that the device will run a test to determine the optimal measurement parameters (see
Figure 2-10). If OK is selected, the DVNext will prompt the user to setup the sample and recommended spindle (see
Figure 2-11).
Figure 2-9 Figure 2-10
If OK is selected, the DVNext will then begin the first attempt at optimizing the speed & spindle combination. In order
to evaluate the spindle/speed combination, the DVNext will run a viscosity test at a standard RPM with a torque
stabilization end condition with a tolerance of +/- 0.5% and a one-minute time period for the stabilization. The goal
of the Viscosity Wizard is to obtain the torque reading between 20% and 80%. Depending on the setup, the time to
complete the Viscosity Wizard test could be up to five minutes.
If the Viscosity Wizard obtained a torque measurement between 20-80%, the DVNext will display the "Wizard
Complete" screen (see Figure 2-12). The Wizard Complete screen will provide the user the optimal spindle and speed
for the sample tested. This screen will also give the user the run time that the wizard took in order to arrive at that
conclusion.
Figure 2-11 Figure 2-12
M19-2101 REVISION 2.0 D V N E X T R H E O M E T E R - O P E R AT I O N A L M A N U A L 20