Brookfield DVE - Making Viscosity Measurements; III.2 Preparations for Measurements

AMETEK Brookeld Page 21 Manual No. M15-356-B0916
III. MAKINGVISCOSITYMEASUREMENTS
III.1 Quick Start
e DVE Viscometer uses the same methodology for viscosity measurements as the Brookeld Dial
Reading Viscometer and the DV series of Digital Viscometers. If you have experience with other
Brookeld equipment, this section will give you the quick steps necessary for taking a viscosity
reading. If you have not used a Brookeld Viscometer before, skip this section and go to Section
III.2 for a detailed description.
A) Assemble the Laboratory Stand. Mount and level the DVE Viscometer (Section I.5).
B) Connect the power supply to the instrument (see Section I.5) and press the power key.
C) Select the spindle number using the SPINDLE UP and DOWN arrow keys (Section II.3).
D) Select the speed of rotation using the SPEED UP and DOWN arrow keys (Section II.4)
E) Introduce the spindle into the sample and attach the spindle to the coupling nut. NOTE:
Le-handed threads.
F) Press the MOTOR ON/OFF key to initiate test. When the test is completed, press the MOTOR
ON/OFF key.
G) Record the test results.
H) Pressing the MOTOR ON/OFF key will repeat the last test.
III.2PreparaonsforMakingMeasurements
A) VISCOMETER: e DVE should be leveled and turned on. e level is adjusted using
the three leveling screws on the bottom of the base and conrmed using the bubble on
the front of the head. Adjust the leveling screws until bubble is inside the center target.
Check the level prior to each measurement.
Proper level is essential for correct operation of the DVE.
B) SAMPLE: e uid to be measured (sample) must be in a container. e standard spindles,
supplied with the DVE (LV (61-64), RV (2-7), or HA/HB (2-7)), are designed to be used
with a 600 mL low form Grin beaker (or equivalent container with a diameter of 8.25cm).
e same applies to the optional RV1, HA/HB1 spindle. Many other spindle systems are
supplied from Brookeld with specic sample chambers such as the Small Sample Adapter,
UL Adapter and ermosel.
Brookeld 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
eect on the measured viscosity. e DVE is calibrated considering the specied container.
Alternate containers will provide results that are repeatable but may not be “true.”
e LV (61-62) and RV (1-2) spindles are designed to be used with the supplied guard leg
attached. Measurements made without the guard leg will provide repeatable results but
may not provide “true” results.