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Brookfield Engineering Laboratories, Inc. Page 1 Manual No.
M/92-021-O604
BROOKFIELD DIGITAL VISCOMETER
MODEL DV-I+
Operating Instructions
Manual No. M/92-021-O604
Please record the Model and Serial Number of your
viscometer.Having this information readily available will help us
to assist youshould there be any questions regarding your
instrument.
Model No.
Serial No.
SPECIALISTS IN THEMEASUREMENT ANDCONTROL OF VISCOSITY
TEL 800-628-8139 or 508-946-6200 FAX
508-946-6262www.brookfieldengineering.com
BROOKFIELD ENGINEERING LABORATORIES, INC.11 Commerce Boulevard,
Middleboro, MA 02346-1031 USA
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TABLE OF CONTENTS
I. INTRODUCTION
.......................................................................................
3 I.1 Components
.....................................................................................................................
4 I.2 Utilities
............................................................................................................................
4 I.3 Specifications
..................................................................................................................
5 I.4 Set-Up
..............................................................................................................................
5 I.5 Safety Symbols and Precautions
.....................................................................................
6 I.6 Key Functions
..................................................................................................................
7 I.7 Cleaning
...........................................................................................................................
8
II. GETTING STARTED
.................................................................................
9 II.1 Auto Zero
.........................................................................................................................
9 II.2 Spindle Selection
...........................................................................................................
10 II.3 Speed Selection & Setting
.............................................................................................
12 II.4 Autorange
......................................................................................................................
13 II.5 CGS or SI Units Selection
.............................................................................................
13 II.6 Temperature Display in F or C Selection
...................................................................
14 II.7 Out of Range
..................................................................................................................
14 II.8 Operation
.......................................................................................................................
15 II.9 Timed Modes for Viscosity Measurement (available in
instruments with V3.0 or greater)
.............................15
Appendix A - Cone/Plate Viscometer Set-Up
..............................................................................
20 Appendix B - Viscosity Ranges
...................................................................................................
24 Appendix C - Variables in Viscosity Measurement
.....................................................................
28 Appendix D - Spindle and Model Codes
.....................................................................................
30 Appendix E - Calibration Procedures
..........................................................................................
32 Appendix F - Special Speed Sets
.................................................................................................
39 Appendix G - Communications
....................................................................................................
40 Appendix H - Laboratory Stand with Parts Identification
........................................................... 41
Appendix I - DVE-50 Probe Clip
...............................................................................................
43 Appendix J - Fault Diagnosis and Troubleshooting
....................................................................
44 Appendix K - Warranty Repair and Service
.................................................................................
46 Appendix L - Viscosity Test Report
.............................................................................................
49
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I. INTRODUCTION
The Brookfield DV-I+ Viscometer measures fluid viscosity at
given shear rates. Viscosity is ameasure of a fluids resistance to
flow. You will find a detailed description of the mathematics
ofviscosity in the Brookfield publication More Solutions to Sticky
Problems a copy of whichwas included with your DV-I+.
The principle of operation of the DV-I+ is to drive a spindle
(which is immersed in the test fluid)through a calibrated spring.
The viscous drag of the fluid against the spindle is measured by
thespring deflection. Spring deflection is measured with a rotary
transducer. The measurementrange of a DV-I+ (in centipoise or
milliPascal seconds) is determined by the rotational speed ofthe
spindle, the size and shape of the spindle, the container the
spindle is rotating in, and the fullscale torque of the calibrated
spring.
There are four basic spring torque series offered by
Brookfield:
Spring TorqueModel dyne-cm milli Newton-m
LVDV-I+ 673.7 0.0673RVDV-I+ 7,187.0 0.7187HADV-I+ 14,374.0
1.4374HBDV-I+ 57,496.0 5.7496
The higher the torque calibration, the higher the measurement
range. The viscosity measurementrange 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 sys-tem.
1. Viscosity appears in units of centipoise (shown as cP) or
milliPascal-seconds (shown asmPas) on the DV-I+ Viscometer
display.
2. Torque appears in units of dyne-centimeters or Newton-meters
(shown as percent %) inboth cases) on the DV-I+ Viscometer
display.
The equivalent units of measurement in the SI system are
calculated using the following conver-sions:
SI CGSViscosity: 1 mPas = 1 cPTorque: 1 Newton-m = 107
dyne-cm
References to viscosity throughout this manual are done in CGS
units. The DV-I+ Viscometerprovides equivalent information in SI
units.
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I.1 Components
Component Part Number Quantity
DV-I+ Viscometer varies 1Model S Laboratory Stand Model S
1Spindle Set with Case varies 1
LVDV-I+ set of four spindles or (SSL) 1RVDV-I+ set of six
spindles (#2 through #7) (SSR) 1HA/HBDV-I+ set of six spindles (#2
through #7) (SSH) 1
For cone/plate versions, a spindle wrench, one cone spindle and
sample cup,Part No. CPE-44Y replace the spindle set.
Shipping Cap B-30-2 1Power Cord DVP-65 1Guardleg (not supplied
with HA/HB or Cone/Plate versions)
LVDV-I+ B-20Y 1RVDV-I+ B-21Y 1
Carrying Case DVE-7Y 1
The following applies to DV-I+ Viscometers with the temperature
probe option.Look for this symbol throughout this manual for
instructions pertainingspecifically to DV-I+ Viscometers with
temperature probe option.
RTD Temperature Probe DVP-94Y 1Probe Clip DVE-50A 1
Please check to be sure that you have received all components
and thatthere is no damage. If you are missing any parts, please
notify BrookfieldEngineering or your local Brookfield agent
immediately. Any shippingdamage must be reported to the
carrier.
Tp
I.2 Utilities
Input Voltage: 115 VAC or 230 VACInput Frequency: 50/60 HzPower
Consumption: 22 WATTS
Power Cord Color Code:United States Outside United States
Hot (live) Black BrownNeutral White BlueGround (earth) Green
Green/Yellow
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I.3 Specifications
Speeds: LVDV-I+: 0.0, 0.3, 0.6, 1.5, 3, 6, 12, 30, 60, 0.0,
(rpm) 0.5, 1, 2, 2.5, 4, 5, 10, 20, 50, 100
RV/HA/HBDV-I+: 0.0, 0.5, 1, 2, 2.5, 4, 5, 10, 20, 50, 100,0.0,
0.3, 0.6, 1.5, 3, 6, 12, 30, 60
Weight: Gross Weight 20 lb 9 kgNet Weight 17 lb 7.7 kgCarton
Volume 1.65 cu ft 0.05 m3
Tp Temperature Sensing Range: -100C to +300C (-148F to
+572F)Operating Environment: 0C to 40C Temperature Range (32F to
104F)
20% - 80% R.H.: non-condensing atmosphere
Analog Torque Output: 0 - 1 Volt DC (0 - 100% Torque)Tp Analog
Temperature Output: 0-4 Volt DC (10 mV/C)
Viscosity Accuracy: 1% Full Scale Range in Use (See Appendix E
for details)Viscosity Repeatability: 0.2% of Full Scale Range in
Use
Tp Temperature Accuracy: 1C: -100C to +149C2C: +150C to
+300C
Electrical Certifications:
Conforms to CE Standards for: Electromagnetic Compatibility
(EMC), Low Voltage(LVD) and Safety Requirements for electrical
equipment for measurement control andlaboratory use.
Certified to the applicable CSA and ANSI/UL Standards, for use
in Canada and theUnited States.
Installation Category II, Pollution Degree 2, Altitude 2000m
(max).
I.4 Set-Up
1) To assemble the Model S Laboratory Stand, place the upright
rod into the base (referto assembly instructions in Appendix H).
The rack gear and clamp assembly shouldface the front of the base.
The upright rod is held in place with a screw which isattached from
the bottom of the base. Tighten this screw with a screwdriver.
2) Insert the mounting rod on the back of the DV-I+ Viscometer
into the hole on theclamp assembly. Be sure that the clamp screw,
VS-41Y, is loose.
3) Tighten the VS-41Y clamp screw. Adjust the Viscometer to be
as close to level aspossible while tightening the clamp screw.
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Tp 4) Connect the optional RTD temperature probe to the
temperature port on therear panel of the DV-I+, if provided.
5) The Viscometer must be level. The level is adjusted using the
two Leveling Screws(VS-3) on the base. Adjust so that the bubble
level on top of the DV-I+ is centeredwithin the circle. Check level
periodically during use.
6) Make sure that the AC power switch at the rear of the DV-I+
is in the OFF position.Connect the power cord to the socket on the
back panel of the instrument and plug itinto the appropriate AC
line.
The AC input voltage and frequency must be within the
appropriate range as shownon the name plate of the viscometer. The
DV-I+ must be earth grounded to ensureagainst electronic
failure!
7) For Cone/Plate models, refer to Appendix A.
I.5 Safety Symbols and Precautions
Safety SymbolsThe following explains safety symbols which may be
found in this operating manual.
Indicates hazardous voltages may be present.
Refer to the manual for specific warning or caution information
to avoid personal injuryor damage to the instrument.
PrecautionsIf this instrument is used in a manner not specified
by the manufacturer, the protectionprovided by the instrument may
be impaired.
This instrument is not intended for use in a potentially
hazardous environment.
In case of emergency, turn off the instrument and then
disconnect the electrical cord fromthe wall outlet.
The user should ensure that the substances placed under test do
not release poisonous,toxic or flammable gases at the temperatures
to which they are subjected to during thetesting.
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SETSPEED
SELECTSPINDLESELECTSPINDLE
MOTORON/OFF
AUTORANGE
Figure I-1
I.6 Key Functions
Figure I-1 shows the control keys on the face of the DV-I+
Viscometer. The following describes eachkey's function.
UP ARROW
This key is used to scroll UP (in an increasingvalue direction)
through the available speed orspindle tables.
DOWN ARROW
This key is used to scroll DOWN (in a decreasingvalue direction)
through the available speed orspindle tables.
Tp Note: Pressing and holding the DOWN ARROW keyduring the POWER
ON will enable thetemperature display to be read in C or F.See
Section II.1.
MOTORON/OFF MOTOR ON/OFF
Turns the motor ON or OFF.
SETSPEED SET SPEED
Causes the DV-I+ to begin running at the currently selected
speed. Used for Time to Torqueand Timed Stop tests. (See Section
II.9 - Timed Modes for Viscosity Measurement.)
AUTORANGE AUTO RANGE
Presents the maximum (100% torque) viscosity attainable (known
as full scale range) for thespindle speed selected. This feature is
functional when the motor is running. Viscometerallowable error is
1% of the maximum (100% torque) viscosity value; minimum
recommendedviscosity range is 10% of the maximum viscosity
value.
Note: Pressing and holding the AUTO RANGE key during power on
will enable theviscosity display to be changed between CGS and SI
units (see Section II.5).
SELECTSPINDLESELECTSPINDLE SELECT SPINDLE
Initiates spindle selection on the first press and then selects
the currently scrolled-to spindlewhen pressed a second time. Used
for Time to Torque and Timed Stop tests. (See SectionII.9 - Timed
Modes for Viscosity Measurement.)
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I.7 Cleaning
Be sure to remove spindle from instrument prior to cleaning.
Severe instrumentdamage may result if cleaned in place.
Instrument and Keypad: Clean with dry, non-abrasive cloth. Do
not use solventsor cleaners.
Immersed Components (spindles): Spindles are made of stainless
steel. Clean with non-abra-sive cloth and solvent appropriate for
sample material thatis not aggressive to immersed components.
When cleaning, do not apply excessive force which may result in
bending spindles.
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II. GETTING STARTED
II.1 Auto Zero
Before readings may be taken, the Viscometer must be Autozeroed.
This action is performedeach time the power switch is turned on.
The display window on the Viscometer will guide youthrough the
procedure as follows:
Turn the power switch (located on the rear panel) to the ON
position. This will result in thefollowing screen display:
BROOKFIELD DV-I+RV VISCOMETER
Figure II-1
After a few seconds, the following screen appears:
BROOKFIELD DV-I+ VERSION 5.1
Figure II-2
No key press is required at this point. After a short time, the
display will clear and the followingwill be displayed:
REMOVE SPINDLE PRESS ANY KEY
Figure II-3
After removing the spindle and pressing any key, the DV-I+
begins its Autozero. The screen willflash Autozeroing. Note: Be
sure that the viscometer is level before initiating Autozero.
After approximately 15 seconds, the flashing stops and the
following screen appears:
REPLACE SPINDLE PRESS ANY KEY
Figure II-4
Pressing any key at this point results in the display of the
DV-I+ default screen:
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cP 123E3 70.1F0.0RPM % 0.0
cP 0.0 S010.0RPM % 0.0
(with Temperature Probe)
(without Temperature Probe)
Calculated Viscosity (cP or mPas)Speed
Temperature (if available)% Torque
Spindle Selected
Figure II-5
The display will vary slightly depending upon the status of the
last spindle entry.
NOTE: If the viscosity value exceeds 99,999, scientific notation
is used. In FigureII-5, theviscosity value is 123,000 cP.
II.2 Spindle Selection
LVDV-I+ Viscometers are provided with a set of four spindles and
a narrow guardleg; RVDV-I+Viscometers come with a set of six
spindles and a wider guardleg; HADV-I+ and HBDV-I+Viscometers come
with a set of six spindles and no guardleg. (See Appendix E for
more informa-tion on the guardleg.)The spindles are attached to the
viscometer by screwing them on to the lower shaft. Note that
thespindles have a left-hand thread. The lower shaft should be held
in one hand and lifted up. Thespindles should be screwed to the
left. The face of the spindle nut and the matching surface on
thelower shaft should be smooth and clean to prevent eccentric
rotation of the spindle. Spindles canbe identified by the number on
the side of the spindle nut.
The DV-I+ requires a Spindle Entry Code number to calculate
viscosity values. The two digitentry code for each spindle may be
found in Appendix D.
NOTE: The DV-I+ will remember the Spindle Entry Code which was
in use when powerwas turned off.
II.2.1 Spindle Selection for Models WITHOUT Temperature
Display
Pressing the SELECT SPINDLE key will cause the characters on the
top line of the display tobegin to blink . It will blink for about
three seconds. If the UP or DOWN ARROW keys are pressed(while SSSSS
is blinking) the two character spindle value to the right of the
SSSSS character will begin tochange (in either an increasing or
decreasing direction depending upon which ARROW key ispressed) for
each press of the key. If the ARROW key is pressed and held, the
display will scrollthrough the spindle codes for as long as the
ARROW key is depressed. When it reaches the lastitem in the list
(either at the top or bottom of the list) the spindle code
displayed will roll-overto 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 SSSSS character to cease blinking andthe
new spindle code will be accepted for use in viscometer
calculations.
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NOTE: You have approximately three seconds in which to press the
SELECT SPINDLEkey before the blinking stops. If you fail to press
the SELECT SPINDLE keybefore the blinking stops you will have to
repeat the above steps and re-select thedesired spindle.
The DV-I+ will begin to calculate using the new spindle
parameters as soon as the SELECTSPINDLE key is pressed the second
time.
Tp II.2.2 Spindle Section for Models WITH Temperature
Display
The steps for selecting and accepting a spindle entry are the
same as Section II.2.1 except thatwhen SELECT SPINDLE is depressed,
the temperature display is temporarily replaced by the spindleentry
code until the entry code is accepted (Figure II-6):
cP 123.4 SP3110 RPM % 89.7
Figure II-6
Once the spindle entry code is accepted, the screen will return
to the default display:
cP 0.0 70.1F0.0RPM % 0.0
Figure II-7
The DV-I+ may also be programmed at Brookfield Engineering for
special user spindles.These special spindles will show up on the
spindle scroll list starting with the designation "AA"and
continuing through "AZ". Contact Brookfield Engineering regarding
your needs for specialspindles.
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II.3 Speed Selection & Setting
Table II-1 shows the available speed selections.
DV-I+ SPEEDS SETS
LV RV/HA/HB
0.0 0.00.3 0.50.6 1.01.5 2.03.0 2.56.0 4.0
12.0 5.030.0 10.060.0 20.00.0 50.00.5 100.01.0 0.02.0 0.32.5
0.64.0 1.55.0 3.0
10.0 6.020.0 12.050.0 30.0
100.0 60.0
Beginning
When scrollingUP
Beginning
When scrollingUP
Table II-1
The DV-I+ may also be programmed with special speed sets. A list
of special speed sets isincluded in Appendix F. Please consult
Brookfield Engineering or your local dealer/distributorfor any
special speed requirements not addressed by the standard or special
speed sets.
To select a viscometer speed first press either the UP or DOWN
ARROW keys which will cause thearea to the right of RPM (on the
bottom line) to display the currently selected speed. Figure II-8
shows the DV-I+ had been operating at 10 RPM, and the current
selected speed is 10 RPM.
cP 872.0 S01 10RPM10 % 87.2 Flashing Selectable SpeedOperating
Speed
Figure II-8
If the ARROW key is pressed just once and then released, the
characters RPMRPMRPMRPMRPM will blink for threeseconds, 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 thatthe next time you initiate a speed change
(by pressing an ARROW key), the DV-I+ 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
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DV-I+ is currently running. The user may operate at a given
speed and pre-set the DV-I+ to thenext desired speed before that
speed will be used. For example, if the DV-I+ is currently
runningat 10 RPM and was previously scrolled to 20 RPM, a single
press of either ARROW key wouldresult in the Figure II-9 screen
display:
cP 872.0 S01 10RPM20 % 87.2Operating Speed Scrolled to Selected
Speed
Figure II-9
Pressing the SET SPEED key would cause the DV-I+ to begin
running at 20 RPM.
Pressing the MOTOR ON/OFF again immediately starts the DV-I+
running at the last scrolled-to-speed. If you had been running at
10 RPM, pressed MOTOR ON/OFF and then re-started the DV-I+ by
pressing MOTOR ON/OFF once again, you would again be running at 10
RPM. However, ifwhile the motor was off you had scrolled to a new
speed of 20 RPM, pressing the MOTOR ON/OFFkey would start the DV-I+
running at 20 RPM.
NOTE: During both spindle or speed selection and scrolling
operations, the DV-I+ willcontinue to calculate and display
viscosity (cP) and torque (%).
II.4 Autorange
The AUTO RANGE key allows you to determine the maximum
calculated viscosity (full scalereading) possible with the current
spindle/speed setting. Pressing the key at any time will causethe
current viscosity display to change and show that maximum
viscosity. The screen torquedisplay will now display a flashing
%100.0 to indicate this special condition. This maximumviscosity
and flashing %100.0 value will be displayed for as long as the AUTO
RANGE key isdepressed. Figure II-10 shows the AUTO RANGE function
for the situation where the No. 1 RVspindle is rotating at 10 RPM.
The full scale range is 1000 cP (or 1000 mPa.s).
NOTE: If the motor is off or the RPM is 0.0, the maximum
viscosity displayed will be 0.0cP (or 0.0 mPa.s).
cP 1000 S01 10RPM %100.0
Figure II-10
II.5 CGS or SI Units Selection
Pressing and holding the AUTO RANGE key during power on will
enable the viscosity display tobe read in either CGS or SI units.
To change the unit format:
1. Turn the power off.2. Press and hold the AUTO RANGE key and
turn the power ON.
The DV-I+ will retain the unit selection when the viscometer is
turned OFF.
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CGS SIViscosity cP mPa.s
II.6 Temperature Display in F or C Selection
Pressing and holding the DOWN ARROW key during power on will
enable the temperature displayto be read in either degrees
Fahrenheit or degrees Centigrade. To change the units format:
1. Turn the power OFF.2. Press and hold the DOWN ARROW key and
turn power ON.
The DV-I+ will retain the unit selection when the viscometer is
turned OFF.
The following screen depicts the changes to the default screen
when displaying temperature inthe Fahrenheit scale and viscosity
display in SI units:
mPas123.4 70.1F 10 RPM % 89.7
Figure II-11
II.7 Out of Range
Brookfield recommends taking viscosity readings between 10% and
100% of scale. The DV-I+gives indications for out of specification
or out-of-range operation. When % (Torque) readingsexceed 100.0 %
(over-range), the display changes to that shown in Figure
II-12:
cP EEEE S0110 RPM % EEEE
Figure II-12
You must change either speed or spindle to correct this
condition. If you operate at spindlespeeds that produce % (Torque)
below 10.0 % (under-range), the DV-I+ flashes both % (Torque)and cP
(Viscosity) on and off:
cP 78.0 S0110RPM20 % 7.8
Figure II-13
Negative % (Torque) will be displayed as shown in Figure
II-14:
cP ---- S01 10RPM20 % -0.2
Figure II-14
Viscosity values will be displayed as - - - - when the %
(Torque) is below zero.
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II.8 Operation
The following procedure is outlined for making a viscosity
measurement in a 600 ml low formGriffin beaker.
1. Mount the guardleg on the DV-I+ Viscometer (LV and RV
series). Attach the spindle tothe lower shaft. Lift the shaft
slightly, holding it firmly with one hand while screwing thespindle
on with the other (note left-hand thread). Avoid putting side
thrust on the shaft.
2. Insert and center spindle in the test material until the
fluid's level is at the immersion groovein the spindle's shaft.
With a disc-type spindle, it is sometimes necessary to tilt the
spindleslightly while immersing to avoid trapping air bubbles on
its surface. (You may find it moreconvenient to immerse the spindle
in this fashion before attaching it to the Viscometer.)
3. To make a viscosity measurement, select the desired speed
setting. Allow time for theindicated reading to stabilize. The time
required for stabilization will depend on the speedat which the
Viscometer is running and the characteristics of the sample fluid.
Formaximum accuracy, readings below 10% should be avoided.
Additional information onmaking viscosity measurements is available
in Appendix C or the Brookfield publicationMore Solutions to Sticky
Problems.
4. Press the MOTOR ON/OFF key to turn the motor OFF when
changing a spindle orchanging samples. Remove spindle before
cleaning. Clean spindles after use.
5. Interpretation of results and the instrument's use with
non-Newtonian and thixotropicmaterials is discussed in the booklet,
More Solutions to Sticky Problems, and inAppendix C, Variables in
Viscosity Measurements.
II.9 Timed Modes for Viscosity Measurement (available in
instruments with V3.0 or greater)
The Timed Modes allow the viscometer user to implement Timed
Stop and Time to Torquecapabilities with the DV-I+ Viscometer. This
feature will allow the user to set up the viscometer(i.e. select
spindle and speed) and then record readings for a fixed period of
time (Timed Stop) oruntil a set torque value is attained (Time to
Torque). A series of menus will ask the user to inputminutes and
seconds (Timed Stop) or % torque (Time to Torque) and will then
begin timing whenthe user presses the MOTOR ON/OFF key to ON. A
message will be displayed showing timeremaining (or time elapsed)
and the appropriate display item (viscosity or torque) will be
updatedcontinuously during the event. Upon completion, the
viscometer will display a screen stating thatthe test is complete
and will also display the final recorded value for the viscosity in
the first case,and the time in minutes and seconds to reach the
torque limit in the second case. Pressing the UPor DOWN arrow keys
will allow alternate data to be examined and pressing any other key
willbring the user back to the default (normal) viscometer display
with the motor OFF. If the userwishes to run another test, repeat
the above steps.
II.9.1 Set Up
1. The user must pre-select the display unit option: CGS or
SI.
2. The user then selects (via the UP and DOWN arrows) the
spindle speed. NOTE: If 0.0 RPM is the selected speed setting (the
default after executing AUTOZERO)
the timed modes can be executed; however, the results will be
meaninglessshowing no viscosity values.
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3. Next, the user selects the spindle number corresponding to
the spindle attached.
4. Now, the user presses the MOTOR ON/OFF key to ensure that the
motor is OFF. Setting themotor to the OFF condition sets up the
viscometer for executing the Timed Modes.
5. The user presses the SET SPEED and SELECT SPINDLE keys
simultaneously to enter eitherof the timed test modes. Immediately,
the following screen appears:
TIMED STOP TIME TO TORQUE
Figure II-15
The user presses either the UP or DOWN ARROW key to select the
test method of choice and isimmediately presented with the
corresponding opening screen.
II.9.2 Timed Stop
1. After pressing the UP ARROW key when in the display of Figure
II-16, the user is presentedwith the following screen:
TIMED STOP SET MINS: 00
Figure II-16
Using the UP and DOWN ARROW keys, the user enters a value for
the minutes portion ofthe time to stop. This value can be as high
as 99 minutes.
2. When satisfied, the user presses the SELECT SPINDLE key again
to enter the seconds settingdisplay:
TIMED STOP SET SECS: 00
Figure II-17
Using the UP and DOWN ARROW keys, the user enters a value for
the seconds portion ofthe time to stop. This value will be between
0 and 59 seconds.
NOTE: The value for minutes or seconds must be other than zero
or you will not be ableto exit this mode.
The user presses the SELECT SPINDLE key one more time at which
point the viscometer willdisplay the following screen:
TIMED STOP:PRESS MOTOR ON OFF/
Figure II-18
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3. At this point, the user need only press the MOTOR ON/OFF key
to begin the timed stopoperation. Any other key will abort the
process and the user will have to begin again bysimultaneously
pressing the SET SPEED and SELECT SPINDLE keys.
4. We will assume that the user pressed the MOTOR ON/OFF key to
ON and is now presentedwith the following screen for the duration
of the timed run:
cP 123456789MIN: 15 SEC:13
Figure II-19
NOTE: When this mode has begun, a press of the MOTOR ON/OFF key
will interruptthe Timed Stop sequence and return the user to normal
operation.
The seconds display will decrement from 59 to zero (0) in one
(1) second intervals. Whenseconds reaches zero (0), the minutes
value will decrement by one (1) minute. This willcontinue until all
of the time has elapsed at which point the viscometer will display
thefollowing screen:
cP 123456789TIMED STOP DONE
Figure II-20
At this point, the viscometer will stop the motor and continue
to display this screen untilthe user presses the UP or DOWN ARROW
keys to view the Torque and Speed that werecurrent at the Timed
Stop completion. This display would appear as follows:
%=76.4 RPM=100TIMED STOP DONE
Figure II-21
The display will switch between that of Figures II-20 and II-21
for each press of either theUP or DOWN ARROW key. Pressing any key
except the UP or DOWN ARROW keys will causethe viscometer to exit
the Timed Stop mode and resume normal operation.
NOTE: For the Timed Stop method, the DV-I+ Viscometer will
retain the last value for thetime interval in EEPROM so that it
will become the default the next time the userelects to use this
method.
II.9.3 Time to Torque
1. After pressing the DOWN ARROW key when in the display of
Figure II-15, the user ispresented with the following screen:
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TIMED TORQUESET TORQUE: 00%
Figure II-22
Using the UP and DOWN ARROW keys, the user enters a value for
the torque level whichthe viscometer must achieve. This value can
be as high as 99%.
NOTE: The value for torque must be other than zero or you will
not be ableto exit this mode.
2. The user presses the SELECT SPINDLE key one more time to end
the torque input at whichpoint the viscometer will display the
following screen:
TIMED TORQ:PRESS MOTOR ON OFF/
Figure II-23
The time to torque value can be as high as 99 minutes and 59
seconds.
3. At this point, the user need only press the MOTOR ON/OFF key
to begin the timed torqueoperation. Any other key will abort the
process and the user will have to begin again bysimultaneously
pressing the SET SPEED and SELECT SPINDLE keys.
4. We will assume that the user pressed the MOTOR ON/OFF key to
ON and is now presentedwith the following display for the duration
of the timed torque run:
TORQUE = 24.2%MIN: 15 SEC: 13
Figure II-24
NOTE: When this mode has begun, a press of the MOTOR ON/OFF key
will interrupt thetime to torque operation and return the user to
normal operation.
The seconds display will increment from zero (0) to 59 in one
(1) second intervals and thecurrent value of the viscometer torque
will be updated continuously. When seconds reach59, the minutes
value will increment by one (1) minute. This will continue until
the userselected torque value is attained at which point the
viscometer will display the followingscreen:
22M 54S TO 85%TIMED TORQ DONE
Figure II-25
At this point, the viscometer will stop the motor and continue
to display this screen untilthe user presses the UP or DOWN ARROW
keys to view the viscosity that was current at theTimed Torque
completion. The display would appear as follows:
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Brookfield Engineering Laboratories, Inc. Page 19 Manual No.
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CP 123456789TIMED TORQ DONE
Figure II-26
The display will switch between that of Figures II-25 and II-26
for each press of either theUP or DOWN ARROW key. Pressing any key
except the UP or DOWN ARROW key will causethe viscometer to exit
the Timed Torque mode and resume normal operation.
NOTE: For the Time to Torque method, the DV-I+ Viscometer will
retain the last enteredtorque in EEPROM for use when the user
elects to perform a time to torque testagain.
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Appendix A - Cone/Plate Viscometer Set-Up
This Cone/Plate version of the DV-I+ uses the same operating
instruction procedures as describedin this manual. However, the gap
between the cone and the plate must be verified/adjustedbefore
measurements are made. This is done by moving the plate (built into
the sample cup) uptowards the cone until the pin in the center of
the cone touches the surface of the plate, and thenby separating
(lowering) the plate 0.0005 inch (0.013mm).DV-I+ Cone/Plate
Viscometers, S/N 50969 and higher, have an Electronic Gap Setting
feature.This feature enables the user to easily find the 0.0005
inch gap setting that was established atBrookfield prior to
shipment.
The following information explains how to set the Electronic Gap
and verify calibration of theDV-I+ Viscometer.
A.1 ELECTRONIC GAP SETTING FEATURES
TOGGLE SWITCH allows you to enable/disablethe Electronic Gap
Setting Feature: left posi-tion is OFF (disabled), right position
is ON (en-abled).PILOT LIGHT is the red (LED) light; when
illu-minated, it means the Electronic Setting Func-tion is sensing
(enabled).CONTACT LIGHT is the yellow (LED) light;when it first
turns on, the hit point has beenfound.
SLIDING REFERENCE MARKER is used afterfinding the hit point; it
is the reference forestablishing the 0.0005 inch gap.
MICROMETER ADJUSTMENT RING is used tomove the cup up or down in
relation to the conespindle. Turning the ring left (clockwise)
low-ers the cup; turning it right (counterclockwise)raises the cup.
Each line on the ring representsone scale division and is
equivalent to 0.0005inch movement of the plate relative to the
cone.
Pilot Light(red)
Toggle Swtich
Contact Light(yellow)
Sliding ReferenceMarker
MicrometerAdjustment Ring
Figure A-1
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Bath/Circulator
BathInlet
BathOutlet
SampleCup
(CPE-44Yor
CPE-44P)
CupOutlet
CupInlet
Figure A-2
Figure A-3
SpindleWrench
(CPE) Cone
These surfacesmust be clean!
Coupling Nut
MicrometerAdjustment
Ring
Do Not hit theCONE with the CUP!
Figure A-4
A.2 SETUP
1. Be sure that the Viscometer is securelymounted to the
Laboratory Stand, leveled andzeroed with no cone or cup attached
and 0%torque is displayed.
2. Figure A-2 shows a typical water bath setup.Connect the
sample cup inlet/outlet ports tothe water bath inlet and outlet and
set the bathto the desired test temperature. Allow suffi-cient time
for the bath to reach the test tem-perature.
3. The Viscometer has been supplied with aspecial cone
spindle(s) which contains theElectronic Gap Setting feature. The
CPEpart number designation on the cone verifiesthe Electronic Gap
Setting feature. Note: TheCPE cone or cup cannot be used with
earlierDV-I+ cone/plate Viscometers (below S/N50969) which do not
have the electronic gapsetting feature.
4. With the motor off, thread the cone spindle byusing the
spindle wrench to secure the vis-cometer coupling nut (see Figure
A-3); gen-tly push up on the coupling nut and hold thissecurely
with the wrench. Thread the conespindle by hand. Note: Left Hand
Threads.
5. Attach the cup, taking care not to hit the conewith the cup
(Figure A-4). There must be nofluid in the cup.
The viscosity of electrically conductive flu-ids may be affected
if readings are taken withthe Electronic Gap Setting feature on. Be
sureto shut the feature off before taking readings!
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A.3 SETTING THE GAP
1. Move the toggle switch to the right; this willturn on
(enable) the Gap Setting Feature. ThePilot (red) light will be
illuminated.
2. If the contact light (yellow) is illuminated,turn the
micrometer adjustment ring clock-wise (as you look down on the
instrument)until the light is just breaking contact,
i.e.,flickering (see Figure A-5).
3. If the yellow contact light is not illuminated,slowly turn
the micrometer adjustment ring insmall increments (one or two scale
divisions)counter-clockwise.
Continue moving the micrometer adjustmentring slowly
counter-clockwise until the con-tact light (yellow) turns on. Back
off (rotateclockwise) until the light is just breakingcontact,
i.e., flickering.
4. Adjust the sliding reference marker, right orleft, to the
closest full scale division mark (seeFigure A-6).
5. Turn the micrometer adjustment ring one scaledivision to the
left to meet the line on thesliding reference marker. THE
YELLOWCONTACT LIGHT SHOULD GO OFF.
6. You have established the gap space needed formeasurement. Now
turn the toggle switchOFF (left); the red pilot light should go
off.
7. Carefully remove the sample cup.
Moves Awayfrom Hit Point
(clockwise) LEFTx
Moves Towards Hit Point
(counter-clockwise) RIGHT
Full Scale Division Marks
SlidingReference
Marker
Figure A-5
Figure A-6
Notes1. The cup may be removed and replaced without resetting
the gap if the micrometer adjustment
ring has not been moved.2. Remove the spindle from the
viscometer when cleaning.3. Re-establish the hit point every time
the spindle is attached/detached.
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C o n e S a m p l e Vo l u m eP a r t N o .
C P E - 4 0 0 . 5 m lC P E - 4 1 2 . 0 m lC P E - 4 2 1 . 0 m lC
P E - 5 1 0 . 5 m lC P E - 5 2 0 . 5 m l
Ta b l e A 6
Table A-1
4. Attach the sample cup to the Viscom-eter and allow sufficient
time for thesample, cup and cone to reach tem-perature
equilibrium.
5. Turn the motor on. Set the desiredspeed(s). Measure the
viscosity andrecord the reading in both % torqueand centipoise
(cP).NOTE: The cone spindle must rotateat least five (5) times
before a visco-sity reading is taken.
6. Verify that the viscosity reading iswithin the allowable 1%
deviation, asexplained earlier, for the specific vis-cosity
standard fluid(s) that you areusing.
* The CPE designation on the conespindle indicates use with
ElectronicGap Setting Cone/Plate Viscometers/Rheometers only.
A.4 VERIFYING CALIBRATION
1. Determine the appropriate sample volume.Refer to Table A-1 to
determine the correctsample volume required for the spindle to
beutilized.
2. Select a Brookfield Viscosity Standard fluidthat will give
viscosity readings between 10%and 100% of full scale range. Refer
to Ap-pendix B for viscosity ranges of cone spindles;ranges listed
apply to CPE cones.
Do not use a silicone viscosity standard fluidwith a viscosity
value greater than 5000 cPwith a Cone/Plate. Brookfield offers a
com-plete range of mineral oil viscosity standardssuitable for use
with Cone/Plates for viscosi-ties above 5,000 cP or shear rates
above 500sec-1; see Table E1 in Appendix E for a list ofavailable
fluids.
It is best to use a viscosity standard fluid thatwill be close
to the maximum viscosity for agiven cone spindle/speed
combination.
Example: LVDV-I+ Viscometer, ConeSpindle CPE-42,
BrookfieldSilicone Viscosity Standardhaving a viscosity of 9.7 cP
at25C.
At 60 RPM, the full scale viscosity range is10.0 cP. Thus, the
Viscometer reading shouldbe 97% torque and 9.7 cP viscosity
0.197(closer to 0.2) cP. The accuracy is a combi-nation of
Viscometer and fluid tolerance (re-fer to Interpretation of
Calibration TestResults in Appendix E).
3. With the motor off, remove the sample cupand place the
viscosity standard fluid into thecup.
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Appendix B - Viscosity Ranges
LV(#1-4) and RV,HA,HB(#1-7) Viscometers
Viscometer Minimum Maximum
LVDV-I+ 15 2,000,000RVDV-I+ 100 13,300,000HADV-I+ 200
26,600,000HBDV-I+ 800 106,400,000
Viscosity Range (cP)
Vane Spindles
V-71 RV .5-5 5-50 262 - 2620V-72 RV 2-20 20-200 1110 - 11100V-73
RV 10-100 100-1000 5350 - 53500V-74 (4)
V-71 HA 1-10 10-100 524 - 5240V-72 HA 4-40 40-400 2220 -
22200V-73 HA 20-200 200-2000 10700 - 107000V-74 (4)
V-71 HB 4-40 40-400 2096 - 20960V-72 HB 16-160 160-1600 8880 -
88800V-73 HB 80-800 800-8000 42800 - 428000V-74 (4)
V-71 5xHB 20-200 200-2000 10480 - 104800V-72 5xHB 80-800
800-8000 44400 - 444000V-73 5xHB 400-4000 4000-40000 214000 -
2140000V-74 (4)
Spindle Torque Shear Stress Range Viscosity Range cPRange Pa
dyne/cm (mPas) @ 10 rpm
Notes: 1) 1 Pa = 10 dyne/cm2) 1 cP = 1 mPas3) Possibility of
turbulence at speeds above 10 rpm may give artificially higher
viscosity readings.
2
2
(4) V-74 not in the firmware for the DV-I+ spindle table. Manual
calculations are required to converttorque readings to shear stress
and viscosity values.
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Small Sample Adapter and Thermosel
SSA and Viscosity (cP) ShearThermosel Rate
Spindle RVDV-I+ HADV-I+ HBDV-I+ sec-1
SC4-14 1,250 - 4,165,000 2,500 - 8,330,000 10,000 - 33,360,000
.40NSC4-15 500 - 1,660,000 1,000 - 3,320,000 4,000 - 13,280,000
.48NSC4-25 0 - 167,000 100 - 334,000 400 - 1,336,000 .93NSC4-27 250
- 830,000 500 - 1,660,000 2,000 - 6,640,000 .34NSC4-28 500 -
1,660,000 1,000 - 3,320,000 4,000 - 13,280,000 .28NSC4-29 1,000 -
3,330,000 2,000 - 6,660,000 8,000 - 26,640,000 .25NSC4-81 37 -
10,000 73.0 - 10,000 292 - 10,000 1.29NSC4-82 37 - 10,000 73.0 -
10,000 292 - 10,000 1.29NSC4-83 121 - 50,000 243 - 50,000 970 -
50,000 1.29N
SC4-16 120 - 400,000 .29NSC4-18 3 - 10,000 1.32NSC4-25 480 -
1,600,000 .22NSC4-31 30 - 100,000 .34NSC4-34 60 - 200,000
.28NSC4-81 3 - 10,000 1.29NSC4-82 3 - 10,000 1.29NSC4-83 11 -
38,000 1.29N
SSA and Viscosity (cP) ShearThermosel Rate
Spindle LVDV-I+ sec-1
UL Adapter
ShearRate
UL Spindle LVDV-I+ RVDV-I+ HADV-I+ HBDV-I+ sec-1
YULA-15 or 15Z 1 - 2,000 7 - 2,000 13 - 2,000 52 - 2,000
1.22NULA-DIN-Y 1 - 3,800 11 - 5,000 22 - 5,000 85 - 2,000 1.29N
Viscosity (cP)
DIN Adapter Accessory
ShearRate
DAA Spindle LVDV-I+ RVDV-I+ HADV-I+ HBDV-I+ sec-1
85 2 - 4,000 12 - 5,000 24 - 5,000 98 - 5,000 1.22N86 4 - 3,800
37 - 10,000 73 - 10,000 292 - 10,000 1.29N87 11 - 38,000 121 -
50,000 243 - 50,000 970 - 50,000 1.29N
Viscosity (cP)
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Spiral Adapter
ShearRate
Spiral Spindle LVDV-I+ RVDV-I+ HADV-I+ HBDV-I+ sec-1
SA-70 98 - 98,500 1,000-1,050,000 2,100-2,100,000
8,400-8,400,000 .00677 -.67.7N
(1-100 RPM)
Viscosity (cP)
Cone/Plate Viscometer
ShearRate
Cone Spindle LVDV-I+ RVDV-I+ HADV-I+ HBDV-I+ sec-1
CPE-40 .30 - 1,028 3 - 10,900 7 - 21,800 26 - 87,200 7.5NCPE-41
1.15 - 3,840 12 - 41,000 25 - 82,000 98 - 328,000 2.0NCPE-42 .60 -
2,000 6 - 21,300 13 - 42,600 51 - 170,400 3.84NCPE-51 4.8 - 16,178
51.8 - 172,600 103.4 - 345,200 414.2 - 1,381,000 3.84NCPE-52 9.3 -
31,000 99.2 - 330,700 198.4 - 661,500 793.6 - 2,646,000 2.0N
Viscosity (cP)
Helipath with T-Bar Spindles
T-Bar Spindle LVDV-I+ RVDV-I+ HADV-I+ HBDV-I+
T-A 156 - 62,400 2,000 - 400,000 4,000 - 800,000 16,000 -
3,200,000T-B 312 - 124,800 4,000 - 800,000 8,000 - 1,600,000 32,000
- 6,400,000T-C 780 - 312,000 10,000 - 2,000,000 20,000 - 4,000,000
80,000 - 16,000,000T-D 1,560 - 624,000 20,000 - 4,000,000 40,000 -
8,000,000 160,000 - 32,000,000T-E 3,900 -1,560,000 50,000 -
10,000,000 100,000 - 20,000,000 400,000 - 80,000,000T-F 7,800
-3,120,000 100,000 - 20,000,000 200,000 - 40,000,000 800,000 -
160,000,000
Viscosity (cP)
In taking viscosity measurements with the DV-I+ Viscometer there
are two considerations whichpertain to the low viscosity limit of
effective measurement.
1) Viscosity measurements should be taken within the equivalent
% Torque Range from10% to 100% for any combination of spindle/speed
rotation.
2) Viscosity measurements should be taken under laminar flow
conditions, not under turbu-lent flow conditions.
The first consideration has to do with the accuracy of the
instrument. All DV-I+ Viscometershave a full scale range allowable
error of (+/-) 1% of any spindle/speed in use. We discouragetaking
readings below 10% of range because the potential viscosity error
of (+/-) 1% is a rela-tively high number compared to the instrument
reading.
The second consideration involves the mechanics of fluid flow.
All rheological measurements offluid flow properties should be made
under laminar flow conditions. Laminar flow is flow wherein
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all particle movement is in layers directed by the shearing
force. For rotational systems, thismeans all fluid movement must be
circumferential. When the inertial forces on the fluid becometoo
great, the fluid can break into turbulent flow wherein the movement
of fluid particles be-comes random and the flow can not be analyzed
with standard math models. This turbulencecreates a falsely high
viscometer reading with the degree of non-linear increase in
reading beingdirectly related to the degree of turbulence in the
fluid.
For the following geometries, we have found that an approximate
transition point to turbulentflow occurs:
1) No. 1 LV Spindle: 15 cP at 60 RPM2) No. 1 RV Spindle: 100 cP
at 50 RPM (optional spindle available from Brookfield)3) UL
Adapter: 0.85 cP at 60 RPM
Turbulent conditions will exist in these situations whenever the
RPM/cP ratio exceeds the valueslisted above.
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Appendix C - Variables in Viscosity MeasurementAs with any
instrument measurement, there are variables that can affect a
viscometer measurement.These variables may be related to the
instrument (viscometer), or the test fluid. Variables related to
thetest fluid deal with the rheological properties of the fluid,
while instrument variables would include theviscometer design and
the spindle geometry system utilized.
Rheological Properties
Fluids have different rheological characteristics that can be
described by viscometer measurements.We can then work with these
fluids to suit the lab or process conditions.
There are two categories of fluids:
Newtonian - These fluids have the same viscosity at different
Shear Rates (differentRPMs) and are called Newtonian over the Shear
Rate range they aremeasured.
Non-Newtonian - These fluids have different viscosities at
different shear rates (differentRPMs). They fall into two
groups:
1) Time Independent2) Time Dependent
Time Independent means that the viscosity behavior does not
change as a function of time whenmeasuring at a specific shear
rate.
Pseudoplastic - A pseudoplastic material displays a decrease in
viscosity with an in-crease in shear rate, and is also known as
shear thinning. If you takeviscometer readings from a low to a high
RPM and then back to the lowRPM, and the readings fall upon
themselves, the material is time inde-pendent ,pseudoplastic and
shear thinning.
Time Dependent means that the viscosity behavior changes as a
function of time when measur-ing at a specific shear rate.
Thixotropic - A thixotropic material has decreasing viscosity
under constant shearrate. If you set a viscometer at a constant
speed recording viscosityvalues over time and find that the
viscosity values decrease with time,the material is
thixotropic.
Brookfield publication, More Solutions to Sticky Problems,
includes a more detailed discus-sion of rheological properties and
non-Newtonian behavior.
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Viscometer Related Variables
Most fluid viscosities are found to be non-Newtonian. They are
dependent on Shear Rate and thespindle geometry conditions. The
specifications of the viscometer spindle and chamber geometry
willaffect the viscosity readings. If one reading is taken at 2.5
rpm, and a second at 50 rpm, the twoviscosity values produced will
be different because the readings were made at different shear
rates.The faster the spindle speed, the higher the shear rate.
The shear rate of a given measurement is determined by: the
rotational speed of the spindle, the sizeand shape of the spindle,
the size and shape of the container used and therefore, the
distance betweenthe container wall and the spindle surface.
A repeatable viscosity test should control or specify the
following:
1) Test temperature2) Sample container size (or spindle/chamber
geometry)3) Sample volume4) Viscometer model5) Spindle used (if
using LVDV-I+ (#1-4) or RVDV-I+ (#1-7) attach the guard leg)6) Test
speed or speeds (or the shear rate)7) Length of time or number of
spindle revolutions to record viscosity.
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Appendix D - Spindle and Model Codes
Each spindle has a two digit code which is scrolled to via the
keypad on the DV-I+. The spindle codedirects the DV-I+ to calculate
viscosity for the spindle that is being used. The spindle
multiplyerconstant (SMC) is used to calculate full scale viscosity
range for any spindle/speed combination (referto Appendix E).
Spindle codes are listed in Table D-1.
SPINDLE CODE SMCRV1 01 1RV2 02 4RV3 03 10RV4 04 20RV5 05 40RV6
06 100RV7 07 400HA1 01 1HA2 02 4HA3 03 10HA4 04 20HA5 05 40HA6 06
100HA7 07 400HB1 01 1HB2 02 4HB3 03 10HB4 04 20HB5 05 40HB6 06
100HB7 07 400LV1 61 6.4LV2 62 32LV3 63 128LV4 64 640LV5 65
1280SPIRAL 70 105T-A 91 20T-B 92 40T-C 93 100T-D 94 200T-E 95
500T-F 96 1000
SPINDLE CODE SMCULA 00 0.64DIN-ULA 85 1.22TSEL-DIN-81 81
3.7SSA-DIN-82 82 3.75SSA-DIN-83 83 12.09ULA-DIN-85 85
1.22ULA-DIN-86 86 3.65ULA-DIN-87 87 12.13SC4-14 14 125SC4-15 15
50SC4-16 16 128SC4-18 18 3.2SC4-21 21 5SC4-25 25 512SC4-27/27D 27
25SC4-28 28 50SC4-29 29 100SC4-31 31 32SC4-34 34 64SC4-37 37
25CPE40 40 0.327CPE41 41 1.228CPE42 42 0.64CPE51 51 5.178CPE52 52
9.922V-71 71 2.62V-72 72 11.10V-73 73 53.50
Table D-1
Note: Spindle codes 66, 67 and 74 are not in the firmware for
the DV-I+ Spindle Table D-1. Manualcalculations are required to
convert torque readings to shear stress and viscosity values.
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Table D-2 lists the model codes and spring torque constants for
each viscometer model.
VISCOMETER TORQUE CONSTANT MODEL CODEMODEL TK ON DV-I+
SCREEN
LVDV-I+ 0.09373 LV2.5xLVDV-I+ 0.2343 4L5xLVDV-I+ 0.4686 5L1/4
RVDV-I+ 0.25 1R1/2 RVDV-I+ 0.5 2RRVDV-I+ 1 RVHADV-I+ 2 HA2xHADV-I+
4 3A2.5xHADV-I+ 5 4AHBDV-I+ 8 HB2xHBDV-I+ 16 3B2.5xHBDV-I+ 20
4B5xHBDV-I+ 40 5B
Table D-2
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Appendix E - Calibration Procedures
The accuracy of the DV-I+ is verified using viscosity standard
fluids which are available from BrookfieldEngineering Laboratories
or your local Brookfield agent. Viscosity standards are Newtonian,
andtherefore, have the same viscosity regardless of spindle speed
(or shear rate). Viscosity standards,calibrated at 25C, are shown
in Table E-1 (Silicone Oils) and Table E-2 (Mineral Oils).
Container size: For Viscosity Standards < 30,000 cP, use a
600 ml Low Form GriffinBeaker having a working volume of 500 ml.For
Viscosity Standards 30,000 cP, use the fluid container.Inside
Diameter: 3.25"(8.25cm)Height: 4.75"(12.1cm)Note: Container may be
larger, but may not be smaller.
Temperature: As stated on the fluid standard label: (+/-)
0.1CConditions: The DV-I+ should be set according to the operating
instructions. The water
bath must be stabilized at test temperature. Viscometers with
the letters LVor RV in the model designation must have the guard
leg attached (see page34 for more information on the guard
leg).
Normal 25C Standard Fluids High Temperature Standard
FluidsViscosity (cP) Viscosity (cP) Three
Viscosity/Temperatures**
5 5,000 HT-30,00010 12,500 HT-60,00050 30,000 HT-100,000
100 60,000500 100,000 **25C, 93.3C, 149C
1,000 Refer to Brookfield catalog formore information.
Table E-1
MINERAL OIL VISCOSITY STANDARD FLUIDSBEL Part No. Viscosity (cP)
25C
B31 31B210 210B750 750B1400 1,400B2000 2,000B11000 11,000B20000
20,000B80000 80,000B200000 200,000B420000 420,000
Table E-2
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Brookfield Viscosity Standard Fluid - General Information
We recommend that Brookfield Viscosity Standard Fluids be
replaced on an annual basis, one yearfrom date of initial use.
These fluids are either pure silicone or mineral oil and are not
subject to changeover time. However, exposure to outside
contaminants through normal use requires replacement on anannual
basis. Contamination may occur by the introduction of solvent,
standard of different viscosityor other foreign material.
Viscosity Standard Fluids may be stored under normal laboratory
conditions. Disposal should be inaccordance with state, local and
federal regulations as specified on the material safety data
sheet;MSDS information is available upon request.
Brookfield Engineering Laboratories does not recertify Viscosity
Standard Fluids. We will issue dupli-cate copies of the Certificate
of Calibration for any fluid within two years of the purchase
date.
Brookfield Viscosity Standard Fluids are reusable provided they
are not contaminated. Normal prac-tice for usage in a 600 ml beaker
is to return the material from the beaker back into the bottle.
Whenusing smaller volumes in accessories such as Small Sample
Adapter, UL Adapter, Thermosel or SpiralAdapter, the fluid is
normally discarded.
Calibration Procedure for LV(#1-4) and RV,HA,HB(#1-7) Brookfield
spindles:1) Place the viscosity standard fluid (in the proper
container) into the water bath.2) Lower the DV-I+ into measurement
position (with guard leg if LV or RV series viscometer is
used).3) Attach the spindle to the viscometer. If you are using
a disk shaped spindle, avoid trapping air
bubbles beneath the disk by first immersing the spindle at an
angle, and then connecting it to theviscometer.
4) The viscosity standard fluid, together with the spindle and
guardleg, should be immersed in thebath for a minimum of 1 hour,
stirring the fluid periodically, prior to taking measurements.
Thespindle can be rotated in the fluid to accelerate temperature
equilibrium.
5) After 1 hour, check the temperature of the viscosity standard
fluid with an accurate thermometer.Fluid must be within 0.1C of the
specified temperature, normally 25C. Allow longer soaktime if
required to come to test temperature.
6) If the fluid is at test temperature, measure the viscosity
and record the viscometer reading; include% and cP (mPas).NOTE: The
spindle must rotate at least five (5) times before readings are
taken.
7) The viscosity reading should equal the cP value on the
viscosity fluid standard to within thecombined accuracies of the
viscometer and the standard (as discussed in the section
entitled,Interpretation of Calibration Test Results).
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Brookfield Engineering Laboratories, Inc. Page 34 Manual No.
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Calibration Procedure for a Small Sample Adapter
When a Small Sample Adapter is used, the water jacket is
connected to the water bath and the water isstabilized at the
proper temperature:
1) Put the proper amount of viscosity standard fluid into the
sample chamber. The amountvaries with each spindle/chamber
combination. (Refer to the Small Sample Adapterinstruction
manual.)
2) Place the sample chamber into the water jacket.3) Put the
spindle into the test fluid and attach the extension link, coupling
nut and free hanging
spindle (or directly attach the solid shaft spindle) to the
DV-I+.4) Allow sufficient time for the viscosity standard, sample
chamber and spindle to reach test
temperature.
5) Measure the viscosity and record the viscometer reading;
include % and cP (mPas). NOTE: The spindle must rotate at least
five (5) times before a viscosity reading
is taken.
Calibration Procedure for a Thermosel System
A two-step process is recommended for the Thermosel.
1) Evaluate the calibration of the Viscometer alone according to
the procedure outlined in thissection, entitled Calibration
Procedure for LV (#1-4) and RV,HA,HB (#1-7) Brookfieldspindles.
2) Evaluate the Viscometer with the Thermosel according to the
procedure decribed below.When a Thermosel System is used, the
controller stabilizes the Thermo Container at the testtemperature.
DO NOT USE THE THERMOSEL TO CONTROL TO TEMPERATURES WITHIN15 OF
AMBIENT TEMPERATURES. Consult your Thermosel manual for
details.
1) Put the proper amount of HT viscosity standard fluid into the
HT-2 sample chamber. Theamount varies with the spindle used. (Refer
to the Thermosel instruction manual).
2) Place the sample chamber into the Thermo Container.3) Put the
spindle into the test fluid and attach the extension link, coupling
nut and free hanging
spindle (or directly attach the solid shaft spindle) to the
DV-I+.4) Allow sufficient time for the viscosity standard, sample
chamber and spindle to reach test
temperature.
5) Measure the viscosity and record the viscometer reading;
include % and cp (mPas). NOTE: The spindle must rotate at least
five (5) times before a viscosity reading is taken.
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Brookfield Engineering Laboratories, Inc. Page 35 Manual No.
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Calibration Procedure for UL Adapter
When a UL Adapter is used, the water bath is stabilized at the
proper temperature:
1) Put the proper amount of viscosity standard fluid into the UL
Tube. (Refer to the ULAdapter instruction manual).
2) Attach the spindle (with extension link and coupling nut)
onto the DV-I+.3) Attach the tube to the mounting channel.4) Lower
the tube into the water bath reservoir, or if using the ULA-40Y
water jacket, connect
the inlet/outlets to the bath external circulating pump.
5) Allow sufficient time for the viscosity standard, sample
chamber and spindle to reach testtemperature.
6) Measure the viscosity and record the viscometer reading;
include % and cP (mPas).
NOTE: The spindle must rotate at least five (5) times before a
viscosity reading istaken.
Calibration Procedure for DIN Adapter
When a DIN UL Adapter is used, the water bath is stabilized at
the proper temperature:
1) Put the proper amount of viscosity standard fluid into the UL
Tube. (Refer to the ULAdapter instruction manual).
2) Attach the spindle (with extension link and coupling nut)
onto the DV-I+.3) Attach the tube to the mounting channel.4) Lower
the tube into the water bath reservoir, or if using the ULA-40Y
water jacket, connect
the inlet/outlets to the bath external circulating pump.
5) Allow sufficient time for the viscosity standard, sample
chamber and spindle to reach testtemperature.
6) Measure the viscosity and record the viscometer reading;
include % and cP (mPas). NOTE: The spindle must rotate at least
five (5) times before a viscosity reading is taken.
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Brookfield Engineering Laboratories, Inc. Page 36 Manual No.
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Calibration Procedure for a Helipath Stand and T-Bar
Spindles
T-Bar spindles should not be used for verifying calibration of
the DV-I+ Viscometer.
When a Helipath Stand and T-Bar spindles are used:
Remove the T-bar spindle and select a standard LV(#1-4) or
RV,HA,HB(#1-7) spindle. Followthe procedures for LV(#1-4) and
RV,HA,HB (#1-7) Brookfield spindles outlined above.
Calibration Procedure for Spiral Adapter
1) Place the viscosity standard fluid (in the proper container)
into the water bath.2) Attach the spindle to the viscometer. Attach
chamber (SA-1Y) and clamp to the
viscometer.
3) Lower the DV-I+ into measurement position. Operate the
viscometer at 50 or 60 RPM untilthe chamber is fully flooded.
4) The viscosity standard fluid, together with the spindle,
should be immersed in the bath.Stirring the fluid periodically
(operate at 50 or 60 RPM), prior to taking measurements toencourage
temperature equilibrium.
NOTE: The spindle must rotate at least five (5) times or for one
minute, whichever isgreater before readings are taken.
5) Measure viscosity and record the viscometer reading; include
% and cP (mPas).
Calibration Procedure for Cone/Plate Viscometers:
1) Follow the procedures outlined in Appendix A for mechanically
adjusting the setting ofthe cone to the plate.
2) Refer to Appendix A, Table 1, and determine the correct
sample volume required for thespindle to be utilized.
3) Select a viscosity standard fluid that will give viscosity
readings between 10% and 100%of full scale range. Refer to Appendix
B for viscosity ranges of cone spindles. Do not usea silicone
viscosity standard fluid with a viscosity value greater than 5000
cP with a Cone/Plate Viscometer. Brookfield offers a complete range
of mineral oil viscosity standardssuitable for use with Cone/Plate
Viscometers. See Table E-2. It is best to use a viscositystandard
fluid that will be close to the maximum viscosity for a given cone
spindle/speedcombination.
Example: LVDV-I+ Viscometer, Cone CP-42, Fluid 10Having a
viscosity of 9.7 cP at 25C
At 60 RPM, the full scale viscosity range is 10.0 cP. Thus, the
Viscometer reading shouldbe 97% torque and 9.7 cP viscosity 0.197
(closer to 0.2) cP. The accuracy is acombination of Viscometer and
fluid tolerance (refer to Interpretation of CalibrationTest
Results).
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Brookfield Engineering Laboratories, Inc. Page 37 Manual No.
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4) With the viscometer stopped, remove the sample cup and place
the viscosity standard fluidinto the cup.
5) Allow sufficient time for temperature to reach equilibrium,
and connect the sample cupto the Viscometer.
6) Measure the viscosity and record the Viscometer reading in
both % torque and centipoise. NOTE: The spindle must rotate at
least five (5) times before a viscosity reading is taken.
Interpretation of Calibration Test Results:
When verifying the calibration of the DV-I+, the instrument and
viscosity standard fluid errormust be combined to calculate the
total allowable error.
The DV-I+ is accurate to (+/-) 1% of any full scale
spindle/speed viscosity range.Brookfield Viscosity Standards Fluids
are accurate to (+/-) 1% of their stated value.
Example: Calculate the acceptable range of viscosity using
RVDV-I+ with RV-3 Spindle at2 RPM; Brookfield Standard Fluid 12,500
with a viscosity of 12,257 cP at 25C:
1) Calculate full scale viscosity range using the equation:Full
Scale Viscosity Range [cP] = TK
* SMC
*
10,000RPM
Where:TK = 1.0 from Table D2SMC = 10 from Table D1
Full Scale Viscosity Range = 50,000 cP1 * 10 * 10,0002
The viscosity is accurate to (+/-) 500 cP (which is 1% of
50,000)
2) The viscosity standard fluid is 12,257 cP. Its accuracy is
(+/-)1% of 12,257 or(+/-) 122.57 cP.
3) Total allowable error is (122.57 + 500) cP = (+/-) 622.57
cP.4) Therefore, any viscosity reading between 11,634.4 and
12,879.6 cP indicates that the
viscometer is operating correctly. Any reading outside these
limits may indicate aviscometer problem. Contact the Brookfield
technical sales department or your localBrookfield
dealer/distributor with test results to determine the nature of the
problem.
The Brookfield Guardleg
The guard leg was originally designed to protect the spindle
during use. The first applications of theBrookfield Viscometer
included hand held operation while measuring fluids in a 55 gallon
drum. It isclear that under those conditions the potential for
damage to the spindle was great. Original construc-tion included a
sleeve that protected the spindle from side impact. Early RV guard
legs attached to thedial housing and LV guard legs attached to the
bottom of the pivot cup with a twist and lock mecha-nism.
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Brookfield Engineering Laboratories, Inc. Page 38 Manual No.
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The current guard leg is a band of metal in the shape of the
letter U with a bracket at the top thatattaches to the pivot cup of
a Brookfield Viscometer/Rheometer. Because it must attach to the
pivotcup, the guard leg cannot be used with a Cone/Plate
instrument. A guard leg is supplied with all LV andRV series
instruments, but not with the HA or HB series, or Cone/Plate
version. Its shape is designedto accommodate the spindles of the
appropriate spindle set;therefore, the RV guard leg is wider than
the LV due to thelarge diameter of the optional RV #1 spindle.
The calibration of the Brookfield Viscometer/Rheometer
isdetermined using a 600 ml Low Form Griffin Beaker. Thecalibration
of LV and RV series instruments includes theguard leg. The beaker
wall (for HA/HB instruments) or theguard leg (for LV/RV
instruments) define what is called theouter boundary of the
measurement. The spindle factorsfor the LV, RV, and HA/HB spindles
were developed withthe above boundary conditions. The spindle
factors (calcu-lated by the DV-I+) are used to convert the
instrument torque(expressed as the %Torque value) into centipoise.
Theo-retically, if measurements are made with different bound-ary
conditions, e.g., without the guard leg or in a containerother than
600 ml beaker, then spindle calculations cannotbe used to
accurately calculate an absolute viscosity. Chang-ing the boundary
conditions does not change the viscosityof the fluid, but it does
change how the instrument torque is converted to centipoise.
Without changingthe spindle code to suit the new boundary
conditions, the calculation from instrument torque to viscos-ity
will be incorrect.
Practically speaking, the guard leg has the greatest effect when
used with the #1 & #2 spindles of theLV and RV spindle sets.
Any other LV (#3 & #4) or RV (#3 - #7) spindle can be used in a
600 ml beakerwith or without the guard leg to produce correct
results. The HA and HB series Viscometers/Rheom-eters are not
supplied with guard legs in order to reduce the potential problems
when measuring highviscosity materials. HA/HB spindles #3 through
#7 are identical to those spindle numbers in the RVspindle set. The
HA/HB #1 & #2 have slightly different dimensions than the
corresponding RV spindles.This dimensional difference allows the
factors between the RV and HA/HB #1 spindles to followthe same
ratios as the instrument torque even though the boundary conditions
are different.
The recommended procedures of using a 600 ml beaker and the
guard leg are difficult for some cus-tomers to follow. The guard
leg is one more item to clean. In some applications the 500 ml of
test fluidrequired to immerse the spindles in a 600 ml beaker is
not available. In practice, a smaller vessel maybe used and the
guard leg is removed. The Brookfield Viscometer/Rheometer will
produce an accurateand repeatable torque reading under any
measurement circumstance. However, the conversion of thistorque
reading to centipoise will only be correct if the factor used was
developed for those specificconditions. Brookfield has outlined a
method for recalibrating a Brookfield Viscometer/Rheometer toany
measurement circumstance in More Solutions to Sticky Problems,
Section 3.3.10. It is impor-tant to note that for many viscometer
users the true viscosity is not as important as a repeatable day
today value. This repeatable value can be obtained without any
special effort for any measurementcircumstance. But, it should be
known that this type of torque reading will not convert into a
correctcentipoise value when using a Brookfield factor if the
boundary conditions are not those specified byBrookfield.
The guard leg is a part of the calibration check of the
Brookfield LV and RV series Viscometer/Rheom-eter. Our customers
should be aware of its existence, its purpose and the effect that
it may have on data.With this knowledge, the viscometer user may
make modifications to the recommended method ofoperation to suit
their needs.
LV Guardleg RV Guardleg
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Brookfield Engineering Laboratories, Inc. Page 39 Manual No.
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Appendix F - Special Speed Sets
The following special speeds sets are available from Brookfield
Engineering Laboratories. Allspeeds are in units of RPM.
Step SS200 SS150 SS100 SS50 SS25 SSINT1 0.0 0.0 0.0 0.0 0.0 0.02
1.0 0.8 0.5 0.2 0.1 0.33 1.4 1.1 0.7 0.3 0.2 0.54 1.8 1.4 0.9 0.4
0.3 0.65 2.0 1.5 1.0 0.5 0.4 1.06 4.0 3.0 2.0 1.0 0.5 1.57 6.0 4.0
3.0 1.5 0.7 2.08 8.0 6.0 4.0 2.0 1.0 2.59 10 7.5 5.0 2.5 1.2
3.0
10 20 15 10 5.0 2.5 4.011 40 30 20 10 5.0 5.012 60 40 30 15 7.5
6.013 80 60 40 20 10 1014 100 75 50 25 12 1215 120 90 60 30 15 2016
140 105 70 35 17 3017 160 120 80 40 20 5018 180 135 90 45 22 6019
200 150 100 50 25 100
RPM SPEED SET (RPM)
Table F-1
Please consult Brookfield Engineering or your local
dealer/distributor for any special speedrequirements not addressed
by either the standard speed sets shown in Table 1 (page 8) or
inTable F-1.
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Brookfield Engineering Laboratories, Inc. Page 40 Manual No.
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Appendix G - Communications
2
3
4
5
6
7
8
9
1
No Connection
No Connection
Analog Ground (%Torque & Temperature)
Analog % Torque (see Note 1)
DV-I+ with Temperature Option Analog Outputs
Connected
internally. Do
not use. No Connection
Analog Temperature - optional (see Note 2){NOTES: 1. This is a
0-1 volt d.c. output where 0 volts corresponds to 0% torque and
1
volt corresponds to 100% torque with a resolutuion of 1
millivolt (0.1%). 2. This is a 0-4 volt d.c. output where 0 volts
corresponds to -100C and 4 volts
correpsonds to +300C with a resolution of 1 millivolt
(0.1C).Figure G-1
Analog Output:
The analog outputs for % torque is accessed from the 9-pin
connector located on the rear panel ofthe DV-I+. The pin
connections are shown in Figure G-1.
The output cable (Part No. DVP-96Y) connections are:
Red Wire: (Not used with DV-I+)Black Wire: (Not used with
DV-I+)White Wire: % Torque OutputGreen Wire: % Torque Ground
Please contact Brookfield Engineering Laboratories or your local
dealer/distributor for purchaseof the DVP-96Y analog output
cable.
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Brookfield Engineering Laboratories, Inc. Page 41 Manual No.
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Figure H-1
*Provided with instruments shipped after October 1, 1999.
Replaced Model A Laboratory Stand.
Appendix H - Model S Laboratory Stand with Parts
Identification*
ITEM PART #
1098765432
1
211111121
OPTIONAL
QTY.
VS-29WVS-29VS-41YVS-40YVS-35502020032S34Z50S311824S06BVS-3VS-2
VS-34VS-38
1DESCRIPTION
BELLEVILLE SPRING WASHERTENSION INSERTCLAMP SCREW ASSEMBLYGEAR
SCREW ASSEMBLYCLAMPLOCKWASHER, EXTERNAL TOOTH, 5/16 X 5/8 X
1/32SCREW, 5/16-18 X 3/4 LG. SLOTTED PAN HD.LEVELING SCREWBASE
14 UPRIGHT ROD18 UPRIGHT ROD
11 1VS-28 TENSION SCREW
VS-35YMODEL S
CLAMP ASSEMBLY
2
3
4
5
1 8
6
7
9
10
11
BROOKFIELDLABORATORYVISCOMETER
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Brookfield Engineering Laboratories, Inc. Page 42 Manual No.
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Unpacking
Check carefully to see that all the components are received with
no concealed damage.
1 Base, VS-2, with 2 Leveling Screws, VS-3, packed in a
cardboard carton1 Upright Rod, VS-34, with attached Clamp Assembly,
VS-35Y
Assembly (Refer to Figure H-1)1. Remove the base assembly from
the carton.2. Remove the screw and washer from the upright rod.
Place the rod and clamp assembly into
the hole in the top of the base.
Note: The Front designation on the clamp assembly should face
the opening ofthe legs, i.e., parallel to the leveling feet.
3. Rotate the rod/clamp assembly slightly until the slot on the
bottom of the rod intersects thepin located in the base.
4. While holding the rod and base together, insert the slotted
screw and washer as shown andtighten securely.
Viscometer Mounting
Insert the Viscometer mounting rod into the hole (with the
cut-away slot) in the clamp assembly.Adjust the instrument level
until the bubble is centered from right to left and tighten the
clampknob (clockwise). Use the leveling screws to fine adjust the
viscometer level. Note: If theDigital Viscometer cannot be leveled,
check to insure that the rod is installed with the gearrack facing
forward.
Note: If the clamp is taken off the upright rod, the tension
insert (Part No. VS-29) must beproperly aligned for the clamp to
fit back onto the upright rod.When the tension insert (Part No.
VS-29) is inserted, its slot must be in the verticalposition
parallel to the upright rod. If the slot is not in the correct
position, the clampwill not slide down over the upright rod. Use a
small screwdriver or pencil to moveit into the correct position.
The VS-29W Belleville spring washers must face eachother as
illustrated. Adjust the VS-28 tension screw so that the clamp
assembly is notloose on the upright rod.
Do not tighten the clamp knob unless the viscometer mounting rod
is insertedin the clamp assembly.
Center the Viscometer relative to the stand base and retighten
the large slotted pan head screw asrequired. Referring to the
Viscometer bubble level, adjust the leveling screws until the
instru-ment is level.
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Brookfield Engineering Laboratories, Inc. Page 43 Manual No.
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Appendix I - DVE-50A Probe Clip
TpProbe Clip DVE-50A is supplied with the DV-I+ Optional
Temperature Probe. It is used to attachthe RTD temperature probe to
the LV/RV Guard Leg or 600 mL low form Griffin beaker. FigureI-1 is
a view of the Probe Clip, showing the hole into which the RTD probe
is inserted, and theslot which fits onto the LV/RV guard leg. When
inserting the RTD probe into the Probe Clip, theupper part of the
Clip is compressed by squeezing the points shown in Figure I-1.
RTD ProbeHole
Squeeze Here wheninstalling RTD
Temperature Probe
Figure I-1
Figure I-2 shows the Probe Clip (with RTD temperature probe
installed) mounted on the guardleg.
Figure I-3 shows the Probe Clip mounted in a 600 mL low form
Griffin beaker. This mountingmay be used with LV, RV, HA and HB
series instruments.
Note: The RTD probe must be parallel to the beaker wall so as
not to interfere with theviscosity measurement.
Guard Leg
DVE-50AProbe Clip
RTD TemperatureProbe
600 mlUSA
No. 14000
500 ml
400
300
200
100
RTD TemperatureProbe
DVE-50AProbe Clip
600 mL Low FormGriffin Beaker
Figure I-2 Figure I-3
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Appendix J - Fault Diagnosis and Troubleshooting
Spindle Does Not Rotate
Make sure the viscometer is plugged in. Check the voltage rating
on your viscometer (115V, 220V): it must match wall voltage. Make
sure the power switch is in the ON position. Verify rpm: make sure
rotational speed (rpm) has been correctly selected.
Spindle Wobbles When Rotating or Looks Bent
Make sure the spindle is tightened securely to the viscometer
coupling. Check the straightness of all other spindles; replace
them if bent. Inspect viscometer coupling and spindle coupling
mating areas and threads for dirt: clean
threads on spindle coupling with a 3/56 left-hand tap. Inspect
threads for wear; if the threads are worn, the unit needs service
(see Appendix G). Check to see if spindles rotate eccentrically or
wobble. There is an allowable runout for 1/
32-inch in each direction (1/16-ionch total) when measured from
the bottom of the spindlerotating in air.
Check to see if the viscometer coupling is bent; if so, the unit
is in need of service.
If you are continuing to experience problems with your
viscometer, follow this troubleshooting sectionto help isolate the
potential problem.
Perform an Oscillation Check
Remove the spindle and turn the motor OFF. Gently push up on the
viscometer coupling. Turn the coupling until the % on the display
reads 15% - 20%. Gently let go of the coupling. Watch the % values
decrease and rest at 0.0 (0.1%)
If the viscometer does not rest at zero, the unit is need of
service. See Appendix G for details on howto return your
viscometer.
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Inaccurate Readings
Verify Spindle, Speed and Model selection Verify test
parameters: temperature, container, volume, method. Refer to:
More Solutions to Sticky Problems; Section II.2A -
Considerations for Making Mea-surements
Perform a calibration check. Follow the instructions in Appendix
D. Verify tolerances are calculated correctly. Verify calibration
check procedures were followed exactly.
If the unit is found to be out of tolerance, the unit may be in
need of service. See Appendix G fordetails on how to return your
viscometer.
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Brookfield Engineering Laboratories, Inc. Page 46 Manual No.
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Appendix K - Warranty Repair and Service
Warranty
Brookfield Viscometers are guaranteed for one year from date of
purchase against defects in materialsand workmanship. They are
certified against primary viscosity standards traceable to the
NationalInstitute of Standards and Technology (NIST). The
Viscometer must be returned to Brookfield Engi-neering
Laboratories, Inc. or the Brookfield dealer from whom it was
purchased for no charge war-ranty service. Transportation is at the
purchaser's expense. The Viscometer should be shipped in
itscarrying case together with all spindles originally provided
with the instrument.
For repair or service in the United States return to:
Brookfield Engineering Laboratories, Inc.11 Commerce
Boulevard
Middleboro, MA 02346 U.S.A.
Telephone: (508) 946-6200 FAX: (508)
946-6262www.brookfieldengineering.com
For repair or service outside the United States consult
Brookfield Engineering Laboratories, Inc. or thedealer from whom
you purchased the instrument.
For repair or service in the United Kingdom return to:
Brookfield Viscometers Limited1 Whitehall Estate
Flex MeadowPinnacles West
Harlow, Essex CM19 5TJ, United Kingdom
Telephone: (44) 27/945 1774 FAX: (44) 27/945
1775www.brookfield.co.uk
For repair or service in Germany return to:
Brookfield Engineering Laboratories Vertriebs GmbHHauptstrasse
18
D-73547 Lorch, Germany
Telephone: (49) 7172/927100 FAX: (49)
7172/927105www.brookfield-gmbh.de
On-site service at your facility is also available from
Brookfield. Please contact our ServiceDepartment for details.
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Brookfield Engineering Laboratories, Inc. Page 47 Manual No.
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Remove and return all spindles (properly packedfor
shipping).
Clean excess testing material off the instrument. Include MSDS
sheets for all materials tested with
this instrument.
Support pointer shaft with white, nylon shippingcap, as shown in
Figure L1, or elastic band fromcoupling to mounting rod of
viscometer.
Pack the instrument in its original case. If thecase is not
available, take care to wrap theinstrument with enough material to
support it.Avoid using foam peanuts or shredded paper.Special
shipping boxes are available fromBrookfield for service
situations.
DO NOT send the Laboratory Stand unless thereis a problem with
the upright rod, clamp or base.If there is a problem with the
stand, remove theupright rod from the base and individually
wrapeach item to avoid contact with the instrument.Do not put Lab
Stand in Viscometer carryingcase.
Fill out the Viscometer Information Sheet (nextpage) with as
much information as possible tohelp expedite your service. If you
do not havethis form, please include a memo indicating thetype of
problem you are experiencing or theservice you need performed.
Please also includea purchase order number for us to bill
against.
Package the instrument and related items in astrong box for
shipping. Mark the outside of thebox with handling
instructions.Example: "Handle with Care" or
"Fragile - Delicate Instrument"
For cone/plate instruments, please remove the cone spindle and
carefully pack in placein the shipping case. If available, use the
original foam insert or roll up one sheet oftissue paper (or
similar) and place between the spindle coupling and cup assembly
(seeFigure K2). This will help prevent damage in shipping.
CONE/PLATE
Packaging Instructions to Return a Viscometer for Repair or
Calibration
FIGURE
L1
FIGURE
L2
a
aa
a
aaa
a
aa
aa
a
aa
a
aaa
a
Foam Insertor Tissue Paper
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Brookfield Engineering Laboratories, Inc. Page 48 Manual No.
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Providing us with the following information will help us to
service your equipment more quickly andefficiently. Please fill out
and return a copy of this form with your instrument.
Brookfield recommends that all viscometers be returned for
annual calibration to ensure that yourequipment continues to
provide the same accuracy you have come to expect from Brookfield
products.
COMPANY INFORMATION
3 SERVICE INFORMATIONOperating Conditions (Spindle; Speed;
Viscosity Range; Temp. Control; Temperature of
Sample):_________________________________________________________________________
_________________________________________________________________________
Did you contacting Brookfield before returning this instrument?
Y N If yes, whom did you contact?
________________________________________________Description/Symptoms
of Present Problem/Malfunction (please list
all):_________________________________________________________________________
_________________________________________________________________________
_________________________________________________________________________
Time Since Last Serviced (if known): ______ Before & After
Calibration Check? Y NOther Comments:
________________________________________________________________________________________________________________________________
_______________________________________________________________________
1
2
When returning your instrument for repair, please use this
VISCOMETER INFORMA-TION SHEET.
VISCOMETER INFORMATIONDate:_______________________
Serial Number: _______________________ Model:
_____________________
Company: _________________________ Primary User:
________________________Telephone: ________________________ Fax:
________________________________P.O. Number: ______________________
(to cover repair and shipping)Billing Address: ____________________
Shipping Address:
______________________________________________________
___________________________________
_________________________________
___________________________________
_________________________________
___________________________________
Return Shipment Instructions: UPS ground UPS Next Day UPS 2nd
Day Federal Express _______________________________
(Federal Express Account Number required)
STEPS: Return the Viscometer to the attention of the Repair
Department at the address above. Package the Viscometer for
shipment as outlined. Include a purchase order or purchase order
number with this form.
-
Brookfield Engineering Laboratories, Inc.
Page 49M
anual No. M
/92-021-O604
Appendix L - Viscosity Test R
eport
VISCOSITY TEST REPORT
SAMPLE MODEL SPINDLE RPM DIAL READING FACTOR VISCOSITY SHEAR
TEMP TIME NOTES% TORQUE cP RATE C
TEST INFORMATION:
CONCLUSIONS:
FOR:DATE:
BY:
BROOKFIELD ENGINEERING LABORATORIES, INC. 11 Commerce Boulevard
Middleboro, MA 02346 TEL: 508-946-6200 or 800-628-8139 (USA) FAX:
508-946-6262 www.brookfieldengineering.com
TABLE OF CONTENTS I. INTRODUCTION I.1 Components I.2 Utilities
I.3 Specifications I.4 Set-Up I.5 Safety Symbols and Precautions
I.6 Key Functions I.7 Cleaning II. GETTING STARTED II.1 Auto Zero
II.2 Spindle Selection II.3 Speed Selection & Setting II.4
Autorange II.5 CGS or SI Units Selection II.6 Temperature Display
in F or C Selection II.7 Out of Range II.8 Operation II.9 Timed
Modes for Viscosity Measurement (available in instruments with V3.0
or greater) Appendix A - Cone/Plate Viscometer Set-Up Appendix B -
Viscosity Ranges Appendix C - Variables in Viscosity Measurement
Appendix D - Spindle and Model Codes Appendix E - Calibration
Procedures Appendix F - Special Speed Sets Appendix G -
Communications Appendix H - Laboratory Stand with Parts
Identification Appendix I - DVE-50 Probe Clip Appendix J - Fault
Diagnosis and Troubleshooting Appendix K - Warranty Repair and
Service Appendix L - Viscosity Test Report