Brookfield DV-II+ Programmable Viscometer - Manual (Page 13)

Brookfield Engineering Labs., Inc. Page 13 Manual No. M/97-164-F1 102
If an ARROW key is pressed and held the DV-II + will scroll up (or down) through the speed table.
When it reaches the last speed in the list (either at the top or bottom of the list) the speed displayed
will “roll-over” to either the first or last speed in the table and the scroll action will continue.
When the required speed is displayed, release the ARROW key to halt further scrolling. You have
approximately two seconds (before the blinking RPM stops) in which to press the SET SPEED key
to immediately begin rotation at the new speed.
Pressing the MOTOR ON/OFF/ESCAPE key stops the Viscometer spindle rotation. Pressing this key
sets the DV-II + to 0.0 RPM and causes the screen display to change as shown in Figure 10:
cP 0.0 20.1C
OFFRPM % 0.0
Figure 10
Pressing the MOTOR ON/OFF/ESCAPE key again immediately starts the DV-II + running at the last
scrolled-to-speed. If you had been running at 12 RPM, pressed MOTOR ON/OFF/ESCAPE and then
re-started the DV-II + by pressing MOTOR ON/OFF/ESCAPE once again, you would again be running
at 12 RPM. However, if while the motor was off you had scrolled to a new speed of 0.5 RPM, pressing
the
MOTOR ON/OFF/ESCAPE key would start the DV-II + running at 0.5 RPM.
Note: During both spindle or speed selection and scrolling operations, the DV-II+ will
continue to calculate and display Viscometer data as selected.
II.4 SELECT
DISPLAY
Display Selection
Viscosity (displayed in units of cP or mPa•s), Shear Stress and Shear Rate are displayed on the left
side of the top line. You may “step” through the three display options by pressing the
SELECT
DISPLAY key. For example, the DV-II + is currently displaying Viscosity as shown in Figure 11:
cP 123e3 20.1C
6.0RPM % 15.6
Figure 11
If the viscosity value exceeds 99,999 scientific notation is used. In Figure 11, the viscosity value is
123,000 cP.
The first press of the SELECT DISPLAY key would display Shear Stress (SS) in Dynes/cm2 (or
Newtons/m2), see Figure 12:
SS 29.0 20.1C
6.0RPM % 15.6
Figure 12
If the shear stress value exceeds 99,999, scientific notation is used.
The next press of the SELECT DISPLAY key would display Shear Rate (SR) in 1/Sec; see Figure 13.