Brookfield DVE - Page 23

AMETEK Brookeld Page 23 Manual No. M15-356-B0916
spindle on with the other (NOTE: Le-handed threads). Avoid putting side thrust on the
sha. With a disc-type spindle, it is necessary to tilt the spindle slightly while immersing to
avoid trapping air bubbles under the surface of the disc. You may nd it more convenient
to immerse the spindle in this fashion before attaching it to the viscometer. Center
the spindle in the test material. e spindle should be inserted to the immersion groove
located on the spindle sha. Use the Laboratory Stand Clamp to adjust the height of the
Viscometer.
Be sure the motor is o when changing spindles.
4. Enter the spindle number into the DVE Viscometer by using the SPINDLE UP/DOWN key.
Select the speed of rotation by using the SPEED UP/DOWN key.
5. To make a viscosity measurement, press the MOTOR ON/OFF key. Allow time for the
indicated reading to stabilize. For maximum accuracy, ashing readings below 10% should
be avoided. Additional information on making viscosity measurements is available in
Chapter 3 of the Brookeld publication “More Solutions to Sticky Problems”.
6. e test is stopped by pressing the MOTOR ON/OFF key.
If your test procedure calls for data collected at more than one speed, change the speed of
rotation during the test.
7. Record the reading and relevant test parameters. Brookeld recommends you record
at a minimum both % Torque and viscosity. Relevant test parameters might include:
viscometer model, spindle, speed, temperature, container size and time of test. See the
sample Viscosity Test Report at the end of the Appendices. Remove the spindle and guard
leg before cleaning. Remember to secure the viscometer sha and li up slightly while
removing the spindle. Clean the spindles and guard leg aer each use. See Section I.9 for
general cleaning recommendations.
8. Interpretation of results and the instrument’s use with non-Newtonian and thixotropic
materials is discussed in the publication, “More Solutions to Sticky Problems”, and in
Appendix C: Variables in Viscosity Measurements.