Brookfield DV-II+ Programmable Viscometer - Manual (Page 11)

Brookfield Engineering Labs., Inc. Page 11 Manual No. M/97-164-F1 102
II.2 SELECT
SPINDLE
SELECT
SPINDLE
Spindle Selection
LVDV-II+ Viscometers are provided with a set of four spindles and a narrow guardleg; RVDV-II+
Viscometers come with a set of six spindles and a wider guardleg; HADV-II+ and HBDV-II+
Viscometers come with a set of six spindles and no guardleg. (See Appendix E for more information
on the guardleg.)
The spindles are attached to the viscometer by screwing them onto the lower shaft. Note that the
spindles have a left-hand thread. The lower shaft should be secured and slightly lifted with one hand
while screwing the spindle to the left. The face of the spindle nut and the matching surface on the
lower shaft should be smooth and clean to prevent eccentric rotation of the spindle. Spindles can be
identified by the number on the side of the spindle coupling nut.
The DV-II + must have a Spindle Entry Code number to calculate Viscosity, Shear Rate and Shear
Stress values. The DV-II + memory contains parameters for all standard Brookfield spindles
including custom spindles and the two digit entry code for each spindle (the complete list of entry
codes may be found in Appendix D).
Note: The DV-II+ will remember the Spindle Entry Code which was in use when the
power was turned off.
Pressing the SELECT SPINDLE key will display the current selected spindle code instead of
temperature and cause the character S to begin to blink . It will blink for about three seconds. If the
UP or DOWN ARROW keys are pressed (while S is blinking) the two character spindle value to the right
of the S character will begin to change (in either an increasing or decreasing direction depending upon
which
ARROW key is pressed) for each press of the key. If the ARROW key is pressed and held, the
display will scroll through the spindle codes for as long as the ARROW key is depressed. When it
reaches the last item in the list (either at the top or bottom of the list) the spindle code displayed will
“roll-over” to either the first or last spindle code and the scroll action will continue.
When the desired spindle code is displayed, release the ARROW key to halt further scrolling. Press
the SELECT SPINDLE key once again. This will cause the S character to cease blinking and the new
spindle code will be accepted for use in viscometer calculations.
Note: You have approximately three seconds in which to press the SELECT SPINDLE
key before the blinking stops. If you fail to press the SELECT SPINDLE key
before the blinking stops you will have to repeat the above steps and re-select
the desired spindle.
The DV-II + will begin to calculate using the new spindle parameters as soon as the SELECT SPINDLE
key is pressed the second time.
Note: The number 99 spindle is for use with special spindles when using Brookfield’s
WINGATHER computer program. Refer to the WINGATHER operator manual for
further information on using “99” spindles.
The DV-II + may also be programmed at Brookfield Engineering for “special” user spindles. These
“special” spindles will appear on the spindle scroll list starting with designation “AA” and continuing
through “AZ”. Contact Brookfield Engineering regarding your needs for special spindles.