Brookfield RVDV-II+Pro User manual

Brookeld Engineering Labs., Inc. Page 1 Manual No. M/03-165-D0410
SPECIALISTS IN THE
MEASUREMENT AND
CONTROL OF VISCOSITY
TEL [phone]
FAX [phone]
or 800-628-8139 (USA e xcluding MA)
INTERNET http://www.brookeldengineering.com
BROOKFIELD ENGINEERING LABORATORIES, INC.
11 Commerce Boulevard, Middleboro, MA 02346 USA
with oces in : Boston • Chicago • London • Stuttgart • Guangzhou
BROOKFIELD DV-II+Pro
Viscometer
Operating Instructions
Manual No. M/03-165 D0410

Brookeld Engineering Labs., Inc. Page 2 Manual No. M/03-165-D0410
TABLE OF CONTENTS
I. INTRODUCTION......................................................................................................................................... 4
I.1 Components................................................................................................................................................................................... 5
I.2 Utilities.............................................................................................................................................................................................. 7
I.3 Specications ................................................................................................................................................................................. 7
I.4 Installation....................................................................................................................................................................................... 8
I.5 Safety Symbols and Precautions ............................................................................................................................................. 9
I.6 Key Functions ...............................................................................................................................................................................10
I.7 Cleaning .........................................................................................................................................................................................11
II. GETTING STARTED.................................................................................................................................. 12
II.1 Autozero.........................................................................................................................................................................................12
II.2 Spindle Selection .......................................................................................................................................................................13
II.3 Speed Selection, Setting, Running ......................................................................................................................................14
II.4 Display Selection ........................................................................................................................................................................15
II.5 Autorange......................................................................................................................................................................................16
II.6 Out of Range.................................................................................................................................................................................17
II.7 Temperature Display..................................................................................................................................................................18
II.8 Printing ..........................................................................................................................................................................................19
II.9 External Control Mode..............................................................................................................................................................20
II.10 Making Viscosity Measurements..........................................................................................................................................20
II.11 Time Modes for Viscosity Measurement............................................................................................................................21
III. OPTIONS .................................................................................................................................................... 22
III.1 Introduction to OPTIONS.........................................................................................................................................................22
III.2 Setup................................................................................................................................................................................................24
III.2.1 Temperature Display ....................................................................................................................................................25
III.2.2 Units of Measurement ..................................................................................................................................................26
III.2.3 Motor Speed Set Selection .........................................................................................................................................26
III.2.4 Printer Output Port ........................................................................................................................................................28
III.2.5 Data Averaging ...............................................................................................................................................................28
III.3 Time Modes....................................................................................................................................................................................29
III.3.1 Time to Stop .....................................................................................................................................................................29
III.3.2 Time to Torque.................................................................................................................................................................32
III.3.3 Print Time Interval ..........................................................................................................................................................34
III.3.4 PC Program (On/O).....................................................................................................................................................35
III.3.5 Download a Program....................................................................................................................................................36
III.3.6 Run a Program.................................................................................................................................................................37
IV. DVLOADER SOFTWARE........................................................................................................................ 39
IV.1 B.E.V.I.S. Overview.......................................................................................................................................................................39
IV.2 Description of B.E.V.I.S. Commands......................................................................................................................................40
IV.3 Creating a B.E.V.I.S. Program ...................................................................................................................................................41
IV.4 Downloading a B.E.V.I.S. Program.........................................................................................................................................43
IV.5 Example Programs......................................................................................................................................................................44
V. AUTOMATED DATA GATHERING & ANALYSIS.............................................................................. 46
V.1 WINGATHER32..............................................................................................................................................................................46
V.2 RHEOCALC32................................................................................................................................................................................48

Brookeld Engineering Labs., Inc. Page 3 Manual No. M/03-165-D0410
Appendix A - Cone/Plate Viscometer Set-Up .....................................................................................................................50
Appendix B - Viscosity Ranges ...............................................................................................................................................55
Appendix C - Variables in Viscosity Measurements .........................................................................................................61
Appendix D - Spindle and Model Codes ..............................................................................................................................63
Appendix E - Calibration Procedures....................................................................................................................................66
Appendix F - The Brookeld Guardleg.................................................................................................................................73
Appendix G - Speed Sets ...........................................................................................................................................................75
Appendix H - Communications ...............................................................................................................................................76
Appendix I - Model S Laboratory Stand .............................................................................................................................79
Appendix J - DVE-50A Probe Clip..........................................................................................................................................81
Appendix K - Fault Diagnosis and Troubleshooting ........................................................................................................82
Appendix L - Instrument Dimensions .................................................................................................................................86
Appendix M - Warranty Repair and Service.........................................................................................................................87

Brookeld Engineering Labs., Inc. Page 4 Manual No. M/03-165-D0410
I. INTRODUCTION
The Brookeld DV-II+Pro Viscometer measures uid viscosity at given shear rates. Viscosity
is a measure of a uid’s resistance to ow. You will nd a detailed description of the science of
viscosity in the Brookeld publication “More Solutions to Sticky Problems” a copy of which
was included with your DV-II+Pro.
The DV-II+Pro offers exceptional versatility in modes of control allowing for traditional
standalone operation, automatic operation through programs downloaded from the PC or with
complete control by PC using Brookeld Rheocalc32 Software.
• The DV-II+Pro can be used as a traditional Brookeld viscometer for collection of single
speed viscosity data through the easy to use keypad; just select the spindle and speed and
read the value from the display. [see Section II, Getting Started]
• The Brookeld DVLoader Software can be used to program the DV-II+Pro to control
all aspects of the test and data collection without the need for the operator to monitor the
instrument; just start the program and return to the printed test data (printer is optional).
[see Section IV, DVLoader Software]
• The Brookeld Rheocalc32 Software will perform all control and data collection func-
tions of the DV-II+Pro from the PC while also providing a platform for advanced data
collection and analysis. [see Section II.9, External Control]
In any of these modes of control, the DV-II+Pro will provide the best in viscosity measurement
and control.
The principal of operation of the DV-II+Pro is to drive a spindle (which is immersed in the
test uid) through a calibrated spring. The viscous drag of the uid against the spindle is
measured by the spring deection. Spring deection is measured with a rotary transducer. The
measurement range of a DV-II+Pro (in centipoise or milliPascal seconds) is determined by the
rotational speed of the spindle, the size and shape of the spindle, the container the spindle is
rotating in, and the full scale torque of the calibrated spring.
There are four basic spring torque series offered by Brookeld:
Spring Torque
Model dyne/cm milli Newton/m
LVDV-II+Pro 673.7 0.0673
RVDV-II+Pro 7,187.0 0.7187
HADV-II+Pro 14,374.0 1.4374
HBDV-II+Pro 57,496.0 5.7496
The higher the torque calibration, the higher the measurement range. The measurement range
for each torque calibration may be found in Appendix B.
All units of measurement are displayed according to either the CGS system or the SI system.
1. Viscosity appears in units of centipoise (shown as “cP”) or milliPascal-seconds (shown as
“mPa•s”) on the DV-II+Pro Viscometer display.
2. Shear Stress appears in units of dynes/square centimeter (“D/cm2”) or Newtons/square
meter (“N/m2”).
3. Shear Rate appears in units of reciprocal seconds (“1/SEC”).
4. Torque appears in units of dyne-centimeters or Newton-meters (shown as percent “%” in
both cases) on the DV-II+Pro Viscometer display.
Note: To change CGS to SI units on the display - see Section III.2.2.

Brookeld Engineering Labs., Inc. Page 5 Manual No. M/03-165-D0410
The equivalent units of measurement in the SI system are calculated using the following
conversions:
SI CGS
Viscosity: 1 mPa•s = 1 cP
Shear Stress: 1 Newton/m2 = 10 dyne/cm2
Torque: 1 Newton/m = 107 dyne/cm
References to viscosity throughout this manual are done in CGS units. The DV-II+Pro
Viscometer provides equivalent information in SI units.
I.1 Components
Please check to be sure that you have received all components, and that there is no damage. If
you are missing any parts, please notify Brookeld Engineering or your local Brookeld agent
immediately. Any shipping damage must be reported to the carrier.
Component Part Number Quantity
DV-II+Pro Viscometer varies 1
Model S Laboratory Stand MODEL S 1
Spindle Set with Case varies 1
LVDV-II+Pro set of four spindles SSL or
RVDV-II+Pro set of six spindles (#2 - #7) SSR or
HA/HBDV-II+Pro set of six spindles (#2 - #7) SSH
For Cone/Plate versions: a spindle wrench, one cone spindle and sample cup,
Part No. CPE-44Y replace the spindle set.
Power Cord 1
DVP-65 for 115 or DVP-65
DVP-66 for 230 DVP-66
RTD Temperature Probe DVP-94Y 1
Guard Leg: 1
LVDV-II+Pro B-20Y
RVDV-II+Pro B-21Y
Carrying Case DVE-7Y 1
DVLOADER CD ROM DVLOADER 1
Cable (DV-II+Pro to computer) DVP-80 1
Operating Manual M/03-165 1

Brookeld Engineering Labs., Inc. Page 6 Manual No. M/03-165-D0410
COMPONENT DIAGRAM
Cone
/
Plate
O
ptio
n
Temperature Probe
O
ptio
n
Spindle Set
Cone Spindle
Wrench
Sample Cup
Temperature Probe Clip
Temperature Probe
Shipping
Cap
Guard Leg
DV-II Pro
Viscometer
Model S
Laboratory Stand
LV Spindle Set
shown above

Brookeld Engineering Labs., Inc. Page 7 Manual No. M/03-165-D0410
I.2 Utilities
Input Voltage: 115 VAC or 230 VAC
Input Frequency: 50/60 Hz
Power Consumption: 30 VA
Power Cord Color Code:
United States Outside United States
Hot (live) Black Brown
Neutral White Blue
Ground (earth) Green Green/Yellow
Main supply voltage uctuations are not to exceed ±10% of the nominal supply voltage.
I.3 Specications
Speeds: Choice of 3 options.
Instrument has “Interleaved” speeds when manufactured.
Standalone Interleaved: LV/RV (18 speeds) 8 LV speeds followed by
10 RV speeds
Sequential: LV/RV (18 speeds) 8 LV speeds and 10 RV
speeds arranged in sequential order from
lowest 0.3 rpm to highest 100 rpm.
Custom: 54 speeds, user selectable
External (PC Control) .01 - 200 rpm
0.01 rpm increments from 0.01 to 0.99 rpm
0.1 rpm increments from 1.0 to 200 rpm
Note: Refer to Appendix G for detailed list of all speeds.
Weight: Gross Weight 23 lbs. 10.5 kg.
Net Weight 20 lbs. 9 kg.
Carton Volume 1.65 cu. ft. 0.05 m3
Temperature Sensing Range: -100˚C to 300˚C (-148˚F to 572˚F)
Analog Torque Output: 0 - 1 Volt DC (0 - 100% Torque)
Analog Temperature Output: 0 - 3.75 Volts DC (-100°C to +275°C)
RS232 Compatible Serial Port for use with an attached printer or PC.
Centronics Compatible Parallel Port for use with an attached printer.
Viscosity Accuracy: ±1.0% of full scale range
The use of accessory items will have an effect on the
measurement accuracy. See Appendix B.
Viscosity Repeatability: ±0.2%

Brookeld Engineering Labs., Inc. Page 8 Manual No. M/03-165-D0410
Temperature Accuracy: ±1°C | -100°C to +149°C
±2°C | +150°C to +300°C
Operating Environment: 0°C to 40°C temperature range (32°F to 104°F)
20% - 80%R.H.: non-condensing atmosphere
Ball Bearing Option:
If you ordered the ball bearing suspension system with your new instrument please
note the following:
1) The ball bearing suspension in your Brookeld instrument is noted on the serial tag
on the back of the head by the letter “B” after the mode.
2) When attaching and detaching the spindle, it is not necessary to lift the coupling
where the spindle connects to the instrument.
3) The Oscillation Check explained in the Appendix under Fault Diagnosis and
Troubleshooting does not pertain to this instrument.
Electrical Certications:
Conforms to CE Standards:
BSEN 61326: Electrical equipment for measurement, control and laboratory use -
EMC requirements
BSEN 61010-1: Safety requirements for electrical equipment, for measurement, control
and laboratory use
Notice to customers:
This symbol indicates that this product is to be recycled at an appropriate collection center.
Users within the European Union:
Please contact your dealer or the local authorities in charge of waste management on how to
dispose of this product properly. All Brookeld ofces and our network of representatives and
dealers can be found on our website: www.brookeldengineering.com
Users outside of the European Union:
Please dispose of this product according to your local laws.
I.4 Installation
Note: “IQ, OQ, PQ”, a guideline document for installation, operation and performance validation
for your DV-II+Pro digital viscometer can be downloaded from our web site www.
brookeldengineering.com.
1) Assemble the Model S Laboratory Stand (refer to assembly instructions in Appendix I).

Brookeld Engineering Labs., Inc. Page 9 Manual No. M/03-165-D0410
2) Put the viscometer on the stand.
3) Connect the RTD probe to the socket on the rear panel of the DV-II+Pro.
4) The Viscometer must be leveled. The level is adjusted using the two leveling screws on
the base. Adjust so that the bubble level on top of the DV-II+Pro is centered within the
circle.
Note: Check level periodically during use.
5) Remove the white shipping cap which secures lower coupling nut on Viscometer to pivot
cup.
6) Make sure that the AC power switch at the rear of the DV-II+Pro is in the OFF position.
Connect the power cord to the socket on the back panel of the instrument and plug it into
the appropriate AC line.
The AC input voltage and frequency must be within the appropriate range as shown
on the nameplate of the viscometer.
Note: The DV-II+Pro must be earth grounded to ensure against electronic failure!!
7) Turn the power switch to the ON position and allow to warm up for 10 minutes before
performing autozero.
8) For Cone/Plate models, refer to Appendix A.
9) If appropriate, connect interconnecting cable (DVP-80) to serial port for connection of
DV-II+Pro to PC or printer.
10) If appropriate, connect interconnecting cable to parallel port for connection of DV-II+Pro
to printer.
11) If appropriate, connect interconnecting cable (DVP-96Y) to analog (serial) port for con-
nection of DV-II+Pro to chart recorder.
I.5 Safety Symbols and Precautions
Safety Symbols
The following explains safety symbols which may be found in this operating manual.
Indicates hazardous voltages may be present.
Refer to the manual for specic warning or caution information to avoid personal
injury or damage to the instrument.
Precautions
If this instrument is used in a manner not specied by the manufacturer, the
protection provided by the instrument may be impaired.
This instrument is not intended for use in a potentially hazardous environment.

Brookeld Engineering Labs., Inc. Page 10 Manual No. M/03-165-D0410
In case of emergency, turn off the instrument and then disconnect the electrical
cord from the wall outlet.
The user should ensure that the substances placed under test do not release
poisonous, toxic or ammable gases at the temperatures which they are subjected
to during the testing.
I.6 Key Functions
Figure I-1 shows the control keys on the face of the DV-II+Pro Viscometer. The
following describes the function of each key.
£UP ARROW
This key is used to scroll UP (in an increasing
value direction) through the available speed,
spindle and Option menu tables.
§DOWN ARROW
This key is used to scroll DOWN (in a
decreasing value direction) through the
available speed, spindle and option menu
tables.
MOTOR
ON/OFF
ESCAPE MOTOR ON/OFF/ESCAPE
Turns the motor ON or OFF. ESCAPE exits the
Options menu.
SET
SPEED
SET SPEED
Causes the DV-II+Pro to begin running at the
currently selected speed. This function works
only when the motor is ON. Also used to select
custom speeds when in the Custom Speed
option.
SELECT
DISPLAY SELECT DISPLAY
Selects the data parameter to be displayed:
cP Viscosity (cP or mPa•s)
SS Shear Stress (dynes/cm2 or Newtons/m2)
SR Shear Rate (1/sec)
ENTER
AUTO
RANGE ENTER/AUTO RANGE
ENTER: Used to execute the currently ashing option.
AUTO RANGE: Presents the maximum (100% torque) viscosity attainable using the
selected spindle at the current viscometer spindle speed.
DV-II+ Pro
VISCOMETER
BROOKFIELD
PRINT
SELECT
SPINDLE
SELECT
DISPLAY
SET
SPEED
ENTER
AUTO
RANGE
MOTOR
ON/OFF
ESCAPE
£
§
OPTIONS
TAB
ô
ö
Figure I-1

Brookeld Engineering Labs., Inc. Page 11 Manual No. M/03-165-D0410
SELECT
SPINDLE SELECT SPINDLE
Initiates spindle selection on the rst press and then selects the currently scrolled-to
spindle when pressed a second time.
PRINT
PRINT
Selects printing and non-printing modes when a printer is attached.
F
OPTION
TAB OPTIONS/TAB
OPTIONS: Presents the Options menu, ashing the last escaped option.
TAB: Toggles between selectable items when indicated, as shown in
Figure I-2.
f
g °F(FAHRENHEIT) $
f
g CGS UNITS #
Note: Symbol indicating
the OPTIONS/TAB key
Figure I-2
Note: Inverted text (black background with white lettering) indicates that the
information is ashing on the viscometer display.
I.7 Cleaning
Be sure to remove the spindle from the instrument prior to cleaning. Severe instrument
damage may result if the spindle is cleaned in place.
Instrument and Keypad: Clean with a dry, non-abrasive cloth. Do not use solvents
or cleaners.
Immersed Components (spindles): Spindles are made of stainless steel. Clean with a non-
abrasive cloth and solvent appropriate for sample mate-
rial.
Note: When cleaning, take care not to apply excessive force - it may bend the
spindles.

Brookeld Engineering Labs., Inc. Page 12 Manual No. M/03-165-D0410
II. GETTING STARTED
II.1 Autozero
Before readings may be taken, the Viscometer must be Autozeroed. This action is performed
each time the power switch is turned on. (Note: If cable DVP-80 is connected for printer or
computer communication see section II.9). The display window on the Viscometer will guide
you through the procedure as follows:
Turn the power switch (located on the rear panel) to the ON position. This will result in
the screen display shown in Figure II-1 indicating that the DV-II+Pro viscometer is in the
standalone mode (is not connected to a computer).
BROOKFIELD DV-2+
PRO VISCOMETER
Figure II-1
After a few seconds, the following screen appears indicating the version of the operating
rmware (the built in program which controls the instrument) and a two-digit alphanumeric
code which indicates the Model number (see Table D2 in Appendix D; the code tells the spring
torque rating or the viscosity measurement range of your viscometer). For most DV-II+Pro
Viscometers, this information will be either “LV”, “RV” or “HB”:
BROOKFIELD DV-2+
RV V6.3
Figure II-2
No key press is required at this point. After a short time, the display will clear and the
following will be displayed:
REMOVE SPINDLE
PRESS ANY KEY
Figure II-3
After removing the spindle and pressing any key, the DV-II+Pro begins its Autozero. The
screen will ash “Autozeroing.”
After approximately 15 seconds, the display shows the screen in Figure II-4:
REPLACE SPINDLE
PRESS ANY KEY
Figure II-4

Brookeld Engineering Labs., Inc. Page 13 Manual No. M/03-165-D0410
Pressing any key at this point results in the display of the DV-II+Pro default screen:
CP 0.0 20.1C
OFFRPM % 0.0
Figure II-5
The display will vary depending upon the selection of temperature (°F or °C) and units of viscosity
(cP or mPa•s).
II.2 SELECT
SPINDLE Spindle Selection
LVDV-II+Pro Viscometers are provided with a set of four spindles and a narrow guardleg;
RVDV-II+Pro Viscometers come with a set of six spindles and a wider guardleg; HADV-
II+Pro and HBDV-II+Pro Viscometers come with a set of six spindles and no guardleg. (See
Appendix F 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 identied by the number on the side of the spindle coupling nut.
The DV-II+Pro must have a Spindle Entry Code number to calculate Viscosity, Shear Rate and
Shear Stress values. The DV-II+Pro memory contains parameters for all standard Brookeld
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+Pro will remember the Spindle Entry Code which was in use when the
power was turned off.
Pressing the SELECT SPINDLE key will temporarily display the current selected spindle
code in place 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 rst 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. After 3 seconds
the current spindle code will be replaced by the temperature display.
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.

Brookeld Engineering Labs., Inc. Page 14 Manual No. M/03-165-D0410
The DV-II+Pro 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 Brookeld’s
RHEOCALC32 computer program. Refer to the RHEOCALC32 operator manual
for further information on using “99” spindles.
The DV-II+Pro may also be programmed at Brookeld Engineering for “special” user spindles.
These “special” spindles will appear on the spindle scroll list starting with designation “AA”
and continuing through “AZ”. Contact Brookeld Engineering regarding your needs for
special spindles.
II.3 SET
SPEED Speed Selection, Setting, Running
There are 54 speeds programmed into the DV-II+Pro. These speeds correspond to the standard
LVT, RVT, HAT and HBT dial models (18 possible speeds altogether) plus 36 additional
speeds.
The DV-II+Pro comes with the Sequential Speed Set already selected (see Appendix G). The
speed set will start at speed 0.0. It will then scroll up through the LV speeds, pass through
speed 0.0 again, and then scroll up through the RV speeds, pass through speed 0.0 again and
then repeat the above sequence.
The DV-II+Pro can also be congured by the operator to interleave the LV and RV speeds. See
Section III.2.3 on Setup for a description of how to install the Interleave Speed Set.
A complete list of speed sets and custom speeds is included in Appendix G. The DV-II+Pro
can be programmed to select up to 19 of the 54 speeds for use at any one time. Speed 0.0 is the
20th speed and is automatically included. See Section III. 2.3.2 on Setup for a description of
how to install a Custom Speed Set.
To select a Viscometer speed rst press either the UP or DOWN arrow keys which will cause
the area to the right of RPM to display the currently selected speed. Figure II-6 shows the DV-
II+Pro is operating at 6.0 RPM, and the current selected speed is 6.0 RPM.
CP 123.4 20.1C
6.0RPM6.0 % 15.6
Figure II-6
If the ARROW key is pressed just once and then released, the characters “RPM” will blink for
three seconds, then will cease blinking resulting in no change to the speed entry.
Note: The speed selection process remembers the last value of scrolled-to speed so that the
next time you initiate a speed change (by pressing an ARROW key), the DV-II+Pro
will begin its scroll display from the last entered value.
The last-scrolled-to speed does not necessarily have to be the same as the speed at which the
DV-II+Pro is currently running. The user may operate at a given speed and pre-set the DV-
II+Pro to the next desired speed before that speed will be used. For example, if the DV-II+Pro
is currently running at 6.0 RPM and was previously scrolled to 12 RPM, a single press of either

Brookeld Engineering Labs., Inc. Page 15 Manual No. M/03-165-D0410
ARROW key would result in the Figure II-7 screen display:
cP 123.4 20.1C
6.0RPM12 % 15.6
Figure II-7
Pressing the SET SPEED key would cause the DV-II+Pro to begin running at 12 RPM.
If the user did not press the SET SPEED key, the DV-II+Pro would continue to run at its
current speed of 6 RPM. In fact, you may scroll to a new speed (12 RPM in this example) and
press the SET SPEED key at any future time (without further pressing an ARROW key) to
immediately cause the DV-II+Pro to run at the new speed. Pressing the ARROW key at any
time reminds the operator of what was selected for the next speed.
If an ARROW key is pressed and held the DV-II+Pro 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 rst 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+Pro to 0.0 RPM and causes the screen display to change as shown in
Figure II-8:
cP 0.0 20.1C
OFFRPM % 0.0
Figure II-8
Pressing the MOTOR ON/OFF/ESCAPE key again immediately starts the DV-II+Pro 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+Pro 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+Pro running at 0.5 RPM.
Note: During both spindle or speed selection and scrolling operations, the DV-II+Pro
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+Pro is currently displaying Viscosity in Figure II-9:

Brookeld Engineering Labs., Inc. Page 16 Manual No. M/03-165-D0410
cP 123e3 20.1C
6.0RPM % 15.6
Figure II-9
If the viscosity value exceeds 99,999 scientic notation is used. In Figure II-9, the viscosity
value is 123,000 cP.
The rst press of the SELECT DISPLAY key would display Shear Stress (SS) in Dynes/cm2
(or Newtons/m2), see Figure II-10:
SS 29.0 20.1C
6.0RPM % 15.6
Figure II-10
If the shear stress value exceeds 99,999, scientic notation is used.
The next press of the SELECT DISPLAY key would display Shear Rate (SR) in 1/Sec (Figure
II-11).
SR 40.0 20.1C
6.0RPM % 15.6
Figure II-11
One more press of the SELECT DISPLAY key would result in a return to the viscosity screen,
as shown in Figure II-9.
Notes:
1. You may step through the display at any time. This will not interrupt any Viscometer
calculations that are in progress.
2. Display of shear rate and shear stress requires selection of appropriate spindles.
Otherwise, values displayed will be zero (0).
Units of Measurement
The DV-II+Pro Viscometer can be congured using the SETUP option (Section III.2.2) to
display/print in either the CGS or SI system of units.
II.5 ENTER
AUTO
RANGE Autorange
The ENTER/AUTO RANGE key functions as auto range and allows you to determine the maximum
calculated viscosity (full scale reading) possible with the current spindle/speed setting only when
in the default screen. Pressing the key at any time will cause the current viscosity display to
change and show that maximum viscosity. The screen area displaying % (torque) will now display
a ashing “%100.0” to indicate this special condition. This maximum viscosity and ashing

Brookeld Engineering Labs., Inc. Page 17 Manual No. M/03-165-D0410
%100.0 value will be displayed for as long as the ENTER/AUTO RANGE key is depressed. Figure II-12
shows the AUTO RANGE function for the situation where the No. 1 LV spindle is rotating at 60 rpm.
The full scale range is 100.0 cP (or 100.0 mPa.s).
cP 100.0 S61
60 RPM % 100
Figure II-12
Notes:
1. If the RPM is 0.0, the maximum viscosity displayed will be 0.0 cP (or 0.0 mPa.s).
2. While the Viscometer is in the Auto Range mode, any data sent to an attached printer
or computer reects the displayed values (i.e. Auto Range values).
3. This function is only available when in the default screen.
II.6 Out of Range
The DV-II+Pro gives indications for out-of-range operation. When % (Torque) readings exceed
100% (over-range), the display changes to that shown in Figure II-13; EEEE will also appear in
the display for % and viscosity or shear stress:
cP EEEE 20.1C
10 RPM % EEEE
Figure II-13
You must change either speed or spindle to correct this condition. If you operate at spindle
speeds that produce % (Torque) below 10.0 %, the DV-II+Pro ashes the % (Torque), cP
(Viscosity), SS (Shear Stress) and SR (Shear Rate) as shown in Figure II-14:
cP 12.4 20.1C
10 RPM % 8.2
Figure II-14
Negative % (Torque) will be displayed as shown in Figure II-15:
cP ---- 20.1C
10 RPM % -2.2
Figure II-15

Brookeld Engineering Labs., Inc. Page 18 Manual No. M/03-165-D0410
Figure II-16 is an example of the printed output of each of the above conditions.
Normal Operation:
RPM=50 M=RV S=29 %=51.4 cP=10280 D/CM2=1285 1/SEC=12.3 T=20.1C Z00:30
Over-Range Operation (>100% torque) (see Fig. 15):
RPM=50 M=RV S=29 %=EEEE cP=EEEE D/CM2=EEEE 1/SEC=12.3 T=20.1C Z00:30
Under-Range Operation (<10% torque) (see Fig. 16):
?RPM=50 M=RV S=29 %=5.2 cP=1040 D/CM2=130 1/SEC=12.3 T=20.1C Z00:30
Negative Torque Operation (see Fig. 17):
RPM=50 M=RV S=29 %=-0.1 cP=---- D/CM2=---- 1/SEC=12.3 T=20.1C Z00:30
M = Torque Range T = Temperature Z = Time
Figure II-16
II.7 Temperature Display
The DV-II+Pro displays the temperature measured by its RTD temperature probe. Temperature
may be displayed in either ˚C (Centigrade) or ˚F (Fahrenheit) units, depending upon selection from
the Options menu. As received, the default temperature display will be in ˚C (Centigrade) units as
shown in the Figure II-17:
CP 123.4 20.1C
10 RPM % 19.7
Figure II-17
If you turn on the DV-II+Pro with the temperature probe disconnected, or remove the temperature
probe at any point after power-up, the display will indicate “- - - -C”.The four “dashes” indicate
the absence of the probe. If you were displaying temperature in Fahrenheit units the C would be
replaced by an F. Accuracy of temperature measurement for the DV-II+Pro is shown in Table 1.
Table 1
Temperature Accuracies for
DV-II+Pro Viscometer
Temperature Range Temperature Accuracy
-100°C to +149°C ±1.0°C
+150°C to +300°C ±2.0°C

Brookeld Engineering Labs., Inc. Page 19 Manual No. M/03-165-D0410
II.8 PRINT Printing
The DV-II+Pro will print data to an attached Serial (RS232) or Parallel (centronics) printer. The
printer must be attached to the appropriate rear panel output connector. See Appendix G for
conguration and connection requirements.
Data may be printed in two ways:
1. Pressing the PRINT key once (for less than three (3) seconds) will result in the printing of one
standard print line.
2. If the PRINT key is pressed and held for more than three (3) seconds, the DV-II+Pro will then
begin continuous printer output at a print rate interval selected via the Options menu (see
Section III.4). The display will show a ashing P in front of the % sign. See Figure II-18.
cP 123.4 20.1C
10 RPM P% 19.7
Figure II-18
To stop continuous printing, press the PRINT key for one (1) second. The ashing P will
disappear on the viscometer display.
Figure II-19 is an example of the print strings for CGS and SI units.
For the case of CGS units with non-exponential results:
and CGS units with exponential results.
Similarly, for SI units with non-exponential results.
and SI units with exponential results.
M = Torque T = Temperature Z = Time
1 10 20 30 40 50 60 70 80
RPM=XXX M=XXXXX S=XX %=XXX.X cP=XXXXX D/CM2=XXXXX 1/SEC=XXXXX T=XX.XC ZXX=XX
RPM=XXX M=XXXXX S=XX %=XXX.X cP=XXXeX D/CM2=XXXeX 1/SEC=XXXXX T=XX.XC ZXX=XX
1 10 20 30 40 50 60 70 80
RPM=XXX M=XXXXX S=XX %=XXX.X mPas=XXXXX N/M2=XXXXX 1/SEC=XXXXX T=XX.XC ZXX=XX
1 10 20 30 40 50 60 70 80
1 10 20 30 40 50 60 70 80
RPM=XXX M=XXXXX S=XX %=XXX.X mPas=XXXeX N/M2=XXXeX 1/SEC=XXXXX T=XX.XC ZXX=XX
Figure II-19
When printing via the parallel port, please note that if a printer is not attached to the viscometer,
the following screen appears:
PRINTERERROR
CHECKCONNECTION
Figure II-20

Brookeld Engineering Labs., Inc. Page 20 Manual No. M/03-165-D0410
II.9 External Control Mode
The DV-II+Pro Viscometer can be used in conjunction with Brookeld software, Rheocalc32
(V2.4 or higher). Through Rheocalc32, all viscometer functions are controlled by the computer.
The DV-II+Pro must be set to the external control mode to allow for proper communication with
Rheocalc32. To congure the external control mode, connect cable DVP-80 to the serial port on
the DV-II+Pro before turning on the DV-II+Pro. With the DVP-80 cable in place, the DV-II+Pro
will present the screen shown in Figure II-21 when it is turned on. If external control is selected,
the DV-II+Pro will display Figure II-22 and only accept control commands from Rheocalc32
software.
hEXTERNAL MODE
iSTANDALONE MODE
Figure II-21
V6.3 RV
EXTERNAL MODE
Figure II-22
The DV-II+Pro may be set to stand alone mode by turning it OFF and ON again and selecting
“Stand Alone” or by removing the DVP-80 cable prior to turning the DV-II+Pro on.
Note: The DV-II+Pro cannot communicate with DVLOADER software in the external
control mode. Choose “Stand Alone” when presented with Figure II-21 if you
want to use DVLOADER.
For information on controlling the DV-II+Pro from Rheocalc32 software, check the HELP
menu within Rheocalc32.
II.10 Making Viscosity Measurements
The following general procedure is used for making viscosity measurements. Brookeld
recommends the use of a 600 ml Low Form Grifn beaker (Brookeld Part No. BKR-600ml)
when using LV/RV/HA/HB spindles.
1. Mount the guardleg on the DV-II+Pro Viscometer (LV and RV series) and insert into the
container.
2. Insert and center spindle in the test material until the uid’s level is at the immersion groove
on the spindle’s shaft. With a disc-type spindle, it is necessary to tilt the spindle slightly while
immersing to avoid trapping air bubbles on its surface. Attach the spindle to the lower shaft
of the viscometer. Lift the shaft slightly, holding it rmly with one hand while screwing the
spindle on with the other (note left-hand thread). Avoid putting side thrust on the shaft. Verify
the proper spindle immersion depth and that the viscometer is level.