Brookfield DV2+Pro Viscometer - Manual (Page 23)

Brookfield Engineering Labs., Inc. Page 23 Manual No. M03-165-F0612
maximum accuracy, readings below 10% should be avoided.
Record values.
4. Press the MOTOR ON/OFF/ESCAPE key and turn the motor “OFF” when changing a spindle or
changing samples. Remove spindle before cleaning.
5. Interpretation of results and the instrument’s use with non-Newtonian and thixotropic materials
is discussed in the booklet, “More Solutions to Sticky Problems”, and in Appendix C, Variables
in Viscosity Measurements.
II.11 Time Modes for Viscosity Measurement
The Time Modes allow the viscometer user to implement the unattended Time to Stop and Time to
Torque capabilities of the DV-II+Pro Viscometer. These features will allow the user to set up the
viscometer (i.e. select spindle and speed) and then record readings for a fixed period of time (Time
to Stop) or until a set torque value is attained (Time to Torque). When timing begins, a message will
be displayed showing time remaining (or time elapsed) and the appropriate display item (viscosity
or torque) will be updated continuously during the event. Upon completion, the viscometer will
stop and display a screen stating that the test is complete and will also display the final recorded
value for the viscosity in the first case, or the time in minutes and seconds to reach the torque limit
in the second case. Pressing the
UP
or
DOWN ARROW
keys will allow additional viscometer data to
be examined. Pressing any other key (except the
PRINT
or
ENTER/AUTORANGE
key) will bring the user
back to the default (normal) viscometer display with the motor OFF. Refer to the Time Modes in
Section IV.3.