Brookfield DV2T Viscometer - Manual (Page 23)

Brookfield Engineering Labs., Inc. Page 23 Manual No. M13-167-B0614
III. MAKING VISCOSITY MEASUREMENTS
III.1 Quick Start
The DV2T Viscometer uses the same methodology for viscosity measurements as the
Brookfield Dial Reading Viscometers and DV series of Digital Viscometers. If you have
experience with other Brookfield equipment, this section will give you quick steps for taking
a viscosity reading. If you have not used a Brookfield Viscometer before, skip this section
and go to Section III.2 for a detailed description.
A) Assemble and level viscometer (Section I.4).
B) Turn power on.
C) Autozero the viscometer (Section II.2).
D) The DV2T will display the Configure Viscosity Test Screen. In this screen,
select spindle and speed. Confirm that Data Collection is set to Single Point
and that End Condition is set to Time 00:00:00.
E) Introduce the spindle into the sample and attach the spindle to the coupling nut.
NOTE: Left-hand thread.
If equipped with EZ-Lock, use the appropriate
procedure to connect the spindle (see Section III.3).
F) Press the Run button. The screen will change to the Running Viscosity Test
Screen.
G) When you are ready to record the measurement result, press the Stop Test
button. The screen will change to the Results Table.
H) Record the % torque and viscosity.
I) To run another test, press Configure Test. To return to the Home Screen,
press the Home Icon.
III.2 Preparations for Making Measurements
A) VISCOMETER: The DV2T should be turned on, leveled and autozeroed. The level is
adjusted using the two feet on the bottom of the base and confirmed using the bubble
level on the front of the head. Adjust the feet until the bubble is inside the center target.
Set the level prior to autozero and check the level prior to each measurement.
The proper level is essential for correct operation of the DV2T.
B) SAMPLE: The fluid to be measured (sample) must be in a container. The standard
spindles supplied with the DV2T [LV (1-4), RV (2-7), or HA/HB (2-7)] are designed to be
used with a 600 mL low form Griffin beaker (or equivalent container with a diameter of
8.25 cm). The same applies to the optional RV1, HA/HB1, and Vane spindles. Many
other spindle systems are supplied from Brookfield with specific sample chambers such
as the Small Sample Adapter, UL Adapter and Thermosel.
Brookfield recommends that you use the appropriate container for the selected spindle.
You may choose to use an alternate container for convenience, however, this may have
an effect on the measured viscosity. The DV2T is calibrated considering the specified
container. Alternate containers will provide results that are repeatable but may not be
“true”.
The LV (1-4) and RV (1-7) spindles are designed to be used with the guardleg attached.
Measurements made without the guardleg will provide repeatable results but may not
provide “true” results.
When comparing data with others, be sure to specify the sample container and
presence/absence of the guardleg.