Brookfield DV1 Viscometer - Manual (Page 26)

Brookfield Engineering Laboratories, Inc. Page 26 Manual No. M14-023
III. MAKING VISCOSITY MEASUREMENTS
III.1 Quick Start
The DV1 Viscometer uses the same methodology for viscosity measurements as the Brookfield
Dial Reading Viscometer and the DV series of Digital Viscometers. If you have experience with
other Brookfield equipment, this section will give you the 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 the Laboratory Stand. Mount and level the DV1 Viscometer (Section I.5).
B) Autozero the viscometer (Section II.2).
C) Enter the spindle number and speed of rotation using the SPINDLE and SPEED Hot Keys
functions (Sections II.5 and II.6).
D) Select the End Condition type and parameter using the OPTIONS Hot Key function
(Section II.8.1).
E) Select the Test View parameter and mode using the OPTIONS Hot Key function (Section
II.8.2).
F) Introduce the spindle into the sample and attach the spindle to the coupling nut. NOTE:
Left-handed threads.
G) Press the Motor On key to initiate test.
H) Record the test results.
I) Press the Motor On key to repeat the test. Press the HOME Hot Key to return to the Home
Screen.
III.2 Preparations for Making Measurements
A) VISCOMETER: The DV1 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 on the top
of the head. Adjust the feet until bubble is inside the center target. Set the level prior to
performing the autozero and check the level prior to each measurement.
Proper level is essential for correct operation of the DV1.
B) SAMPLE: The fluid to be measured (sample) must be in a container. The standard spindles,
supplied with the DV1 (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 8.25cm).
The same applies to the optional RV1, HA/HB1 spindle. 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 DV1 is calibrated considering the specified container.
Alternate containers will provide results that are repeatable but may not be “true.”