Brookfield CAP 1000+ User manual

Brookfield Engineering Labs., Inc. Page 1 Manual No. M02-312
BROOKFIELD CAP1000+VISCOMETER
MODEL CAP 1000+
Operating Instructions
Manual No. M02-312
SPECIALISTS IN THE
MEASUREMENT AND
CONTROLOF VISCOSITY
T EL 508-946-6200
F
AX 508-946-6262
or 800-628-8139 (USA excluding MA)
INTERNET
http://www.brookfieldengineering.com
BROOKFIELD ENGINEERING LABORATORIES, INC.
11 Commerce Boulevard, Middleboro, MA 02346 USA

Brookfield Engineering Labs., Inc. Page 2 Manual No. M02-312
TABLE OF CONTENTS
I. INTRODUCTION .......................................................................................................... 3
I.1 Components....................................................................................................... 3
I.2 Utilities ............................................................................................................... 4
I.3 Specifications..................................................................................................... 4
I.4 Installation.......................................................................................................... 5
I.5 Safety Symbols and Precautions ....................................................................... 5
I.6 Key Functions .................................................................................................... 6
I.7 Viscosity and Temperature Display.................................................................... 6
I.8 Cleaning............................................................................................................. 7
II. GETTING STARTED .................................................................................................... 8
II.1 Power ON.......................................................................................................... 8
II.2 Cone Spindle Selection and Setting.................................................................. 8
II.3 Speed Setting.................................................................................................. 10
II.4 Temperature Control Setting ........................................................................... 10
II.5 Hold Time Settings ...........................................................................................11
II.6 Run Time..........................................................................................................11
II.7 Printing .............................................................................................................11
II.8 Run and Stop Keys ......................................................................................... 12
III.OPERATION............................................................................................................... 13
III.1 Accuracy of Measurement ............................................................................... 13
III.2 Repeatability .................................................................................................... 14
III.3 Making Viscosity Measurements ..................................................................... 14
APPENDIX A - Cone Numbers, Sample Sizes, Viscosity Ranges.................................. 17
APPENDIX B - Calibration Procedures........................................................................... 20
APPENDIX C - Variables in Viscosity Measurement ...................................................... 23
APPENDIX D - Warranty Repair and Service ................................................................. 25
ThismanualintendedforusewithCAP1000+seriesviscometerswhich
have serial numbers beginning with a prefix of “CPN”.
CAP1000 and 2000 Viscometers with a serial number prefix of “CP”
require a different manual. Please contact Brookfield or your autho-
rized dealer/representative to obtain this manual.

Brookfield Engineering Labs., Inc. Page 3 Manual No. M02-312
I. INTRODUCTION
The CAP Series Viscometers are Cone and Plate geometry high shear rate instruments with
integrated temperature control of the test sample material. The CAP 1000+ is a fixed shear rate
viscometer rotating at 750 RPM and 900 RPM. The instruments operate by digital setting and
display; rotational speed can be automatically timed to stop. High shear rate viscosity measure-
ments are made over various viscosity ranges depending upon the cone spindle and the rota-
tional speed (shear rate). Viscosity is selectively displayed in units of centipoise (cP), poise (P),
milliPascal seconds (mPa•s) or Pascal seconds (Pa•s). Temperature control of sample is pos-
sible between either 5°C (or 15°C below ambient, whichever is higher) and 75°C or 50°C and
235°C depending on viscometer model.
The CAP1000+ can also be ordered with a single, customized speed between 5 and 1000 rpm.
In this case, the CAP can offer, when necessary, low shear rate capability.
The CAP 1000+ Viscometer selectably display in either the CGS or SI units (see page 7):
CGS SI Comment
Viscosity: P or CP Pa•s or mPa•s 0.1 Pa•s = 1 P (= 100 cP)
Shear Rate: SEC-1 SEC-1
Speed: RPM RPM
Temperature: °C°C
The CAP 1000+ Viscometer output data to a parallel printer in the CGS and SI units:
CGS SI Comment
Viscosity: P or cP Pa•s or mPa•s 0.1 Pa•s = 1 P (= 100 cP)
Full Scale Range (F.S.R.): % %
Shear Stress: Dynes/cm2N/m21.0 N•m = 107dyne•cm
Shear Rate: SEC-1 SEC-1
Speed: RPM RPM
Run Time: Seconds Seconds
Temperature: °C°C
Cone Spindle Number: No. No.
I.1 Components
The following items are included: Part No.
1. CAP 1000+ Viscometer
2. Cone Spindle(s) ...................................... CAP-S-0X (X will be shown as a number 1-10)
3. Spindle Case ......................................... CAP-106Y
4. Solvent Trap ......................................... CAP-118
5. Power Cord: 115V ................................ DVP-65
220V ................................ DVP-66
UK ................................... DE-8
Germany .......................... DE-7
6. Operating Instructions Manual ............... M/02-312

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The following optional items may have been included: Part No.
7. Viscosity Standard Fluid for calibration .... See Table A-1 in Appendix A
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 Brookfield Engineering or your local Brookfield dealer
immediately. Any shipping damage must be reported to the carrier. Save the packing con-
tainer, if possible, for future use when returning the viscometer to Brookfield or an authorized
dealer for service.
I.2 Utilities
Input Voltage: 115 VAC or 230 VAC
Input Frequency: 50/60 Hz
Power Consumption: Less than 345 WATTS
Fuses: (2) 5x20mm, 3A, 250V, FastActing for 125VAC
(2) 5x20mm, 1.6A, 250V. Fast Acting for 250VAC
Power Cord Color Code: United States Outside United States
Hot (live) Black Brown
Neutral White Blue
Ground (earth) Green Green/Yellow
I.3 Specifications
Speeds: 750 RPM and 900 RPM or
single speed from 5-900 RPM as specified
at time of order (see instrument serial tag)
Temperatures: CAP 1000+L 5°C (or 15°C below ambient, whichever is higher)
to 75°C
CAP 1000+H 50°C to 235°C
All models provide 0.1°C increments
Weight: Gross Weight 36 lb 16.3 kg
Net Weight 27 lb 12.3 kg
Carton Volume 4.9 cu ft 0.15 m3
Carton Dimensions 18 in. L x 18 in. W x 26 in. H
48 cm. L x 48 cm. W x 66 cm. H
Materials: CAP cone spindles and temperature plates are made of tungsten carbide.
Operating CAP 1000+ Viscometers must be operated within the following
Environment: ambient temperatures: +5°C (41°F) to 40°C (149°F)
and humidity: 20% to 80% R.H. (non-condensing atmosphere)

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I.4 Installation
Note: DO NOT lift the viscometer by the handle or display panel! LIFT by the base console
or column!
1) Set the viscometer on a clean level bench surface.
2) Remove shipping spindle blank and foam packing from CAP Viscometer. Store the
spindle blank in the spindle case. Use again only when transporting CAP Viscometer.
3) Verify that the viscometer’s power requirements match your power source BEFORE
connecting it to power.
TheACinputvoltageandfrequencymustbewithintheappropriaterangeasshownonthe
name plate of the viscometer.
Note: The CAP Viscometer must be earth grounded. Use the three (3) wire power cord! Do
not alter!
4) Connect the power cord to the viscometer and to the power supply (source).
5) If using a printer, connect the printer cable to the printer port and printer.
Note: Ensure that both the priner and the CAP-1000+ are off when connecting cables.
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.
Caution: HOT surface.
Refer to the manual for specific warning or caution information to avoid personal injury
or damage to the instrument.
Safety Overview
If this instrument is used in a manner not specified by the manufacturer, the protection
provided by the instrument may be impaired.
This instrument is not intended for use in a potentially hazardous environment.
Incaseofemergency,turnofftheinstrumentandthendisconnecttheelectricalcordfrom
the wall outlet.

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I.6 Key Functions
Figure I-1 shows the control keys on the face of
the viscometer display panel:
NUMERIC 0 - 9
These keys are used for data entry
ENTER
This key accepts entered data.
STOP / ESCAPE
Stopscone spindle rotation at any time. Exits data
entry field.
DELETE
This key overwrites entered data.
PRINT
This key sends data to the parallel port.
RUN
This key starts spindle rotation.
RUN TIME
This key selects time entry mode (time of spindle
rotation).
HOLD TIME
This key selects time entry mode (wait time before spindle rotates).
SPINDLE
This key selects the cone spindle entry mode:
TEMP
This key selects the temperature entry mode.
I.7 Viscosity and Temperature Display
Viscosity is displayed in either P=Poise or cP=Centipoise (CGS system) or Pa•s=Pascal sec-
onds or mPa•s=milliPascal seconds (SI system). If the viscosity measurement is over range,
“EEEE” will be displayed. Brookfield recommends a minimum reading of 10%. If the display
value is between 0 and 10%, the unit display will flash to indicate an out of range condition. If
the viscometer settles out with a final reading below zero, negative values will be displayed.
Temperature is displayed in °C=degrees centigrade.
Figure I-1

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I.8 Cleaning
Instrument,Keypad & Painted Surfaces:
Clean with dry, non-abrasive cloth. Do not use solvents
or cleaners.
Immersed Components (spindles/cones) and insulation plate:
All immersed components are made of carbide steel.
Clean with non-abrasive cloth and solvent appropriate for
sample material that is not aggressive to immersed com-
ponents.
Note: Whencleaning,takecarenot to apply excessive forcewhichmaybendthespindle shafft
or otherwise damage the instrument.

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II. GETTING STARTED
II.1 Power ON
Turn the power ON using the switch located on the rear of the base console.
The display will sequentially show BROOKFIELD, then the model of the viscometer and the
version number. After about four seconds, the main screen will be displayed (Figure II-1),
indicating the temperature of the sample plate. The instrument will be set to the default tem-
perature.
MAIN SCREEN
0.00P 0.0%
Run 15 Spindle 04
50.0C 900 RPM
Figure II-1
Default Temperatures
CAP L Series Viscometer 25.0°C
CAP H Series Viscometer 50.0°C
Special Functions
Units of measure and speed of rotation may be selected through the special functions screen.
This screen is accessed by pressing the STOP key during instrument power up.
The CAP-1000+ can be configured to operate at 750 RPM or 900 RPM. This selection is set by
choosing 1=SPEED in the special functions screen, then selecting 1=750 RPM or 2=900
RPM and pressing ENTER.
The CAP-1000+ can be configured to display viscosity in one of four units: Poise (P), Centi-
poise (cP), Pascal Seconds (Pa•s) or milliPascal seconds (mPa•s). This selection is set by
choosing 2=U in the special functions screen, selecting 1=P, 2=cP, 3=Pa•s, or 4=mPa•s,and
then pressing ENTER.
Once the CAP-1000+ has been configured, the instrument must be turned OFF. The configu-
ration will be stored in memory.
II.2 Cone Spindle Selection and Setting
Raise the viscometer handle to its highest position.
The CAPcones have viscosity ranges as shown inAppendix A. After selecting the appropriate
cone for the viscosity range to be utilized, carefully attach the cone to the viscometer as shown:
Be sure to align the flats on the spindle shaft with the thumb screw.

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CONE ATTACHMENT
Solvent Trap
Cone Spindle
Thumb Screw
Viscometer in "cleaning" positionViscometer in measurement position
Figure II-2
Whenusing the solvent trap, connectit to thecone adapter bysliding it up,passing the slotby
the thumb screw and turning the trap clockwise onto the thumbscrew. Slide the cone up into
the adapter as far as it will go and hand lock it in place with the thumb screw. Tighten the thumb
screw firmly and securely.
Press the SPINDLE key. The display will change to the spindle entry screen. Using the
number keys, type in the required spindle number.
Two digits must be entered for the cone number. For cone 01 through 09, the first number
remains as “0”.
Note: The default cone setting on power-up will be the last cone entry prior to shutting off the
viscometer.
After the correct two (2) digits have been entered, press the ENTER key and the cone will be
accepted for viscometer calculations. The screen will display the following message:
Spindle 04
C LIBR TE? YES/NO
Figure II-3
Normally there is no requirement to perform a cone calibration. Cones supplied at the time of
order are calibrated to the viscometer prior to shipment.
Note: 1. CAPViscometers allow for only one cone at a time of the same cone number to be
calibrated to the viscometer. Multiple cones of the same cone number must each be
calibrated to the viscometer before operation (refer to Appendix B).

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2. Cones entered as 11 through 99 must be first calibrated following the directions in
Appendix B.
If you are not going to calibrate the cone, continue by pressing the NO key then ENTER. The
viscometer will display the MAIN SCREEN (Figure II-1).
If you are going to calibrate the cone, press the YES key, refer to Appendix B, and follow the
calibration instructions under Cone Calibration.
II.3 Speed Setting
The CAP1000+ is a single speed viscometer. It is supplied from the factory in two configura-
tions: standard and custom. The speed of rotation is shown in the lower right corner of the
display.
Standard
TheCAP1000+Viscometer issuppliedwithtwo speeds: 750RPMand 900 RPM. All CAP1000+
Viscometers are factory-set at 900 RPM. To change the setting, press and hold the STOP key
during the power up sequence. Choose “1=SPEED (RPM)” from the special functions screen
and select the required speed. This selection will become the default speed.
Custom
The CAP1000+ Viscometer is configured to operate at one speed as specified at the time of
order. This speed is indicated on the instrument serial tag.
To begin spindle rotation, press the RUN key.
II.4 Temperature Control Setting
Press the TEMP key and the current temperature setting will blink. The default temperature on
start-up is 25.0°Con low temperature models and 50°Con high temperature models.
The temperature ranges are:
Low temperature: 5°C (or 15°C below ambient, whichever is higher) to 75°C
High temperature: 50°C to 235°C
Note:The temperature can be set in increments of 0.1°C.
Use the number keys to type in the required set point.
Use the ENTER key to accept th new set point.
Note: Thermal equilibrium of the sample and of the spindle must be considered for best
measurement results. Upon powering up the Viscometer or after changing the tempera-
ture set point, allow sufficient time for the plate to reach the desired temperature. It is
recommendedtohavethespindleincontactwiththeplatepriortointroducingthesample
material to ensure that the spindle is also at the temperature of test. Brookfield
recommends using the solvent trap at all times to enhance the temperature control of the
samplematerial. Afterinsertingthesamplematerialontotheplate,lowerthespindleand
solvent trap and allow sufficient time for thermal equilibrium prior to starting the test.

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II.5 Hold Time Settings
Hold time sets the time period between when the RUN key is pressed and when the spindle
begins to rotate. This time period is normally used to ensure thermal equilibrium of the sample
and spindle. The hold time range is 0 to 999 seconds.
Press the HOLD TIME key and the current hold time will blink on the default screen. Use the
number keys to type in the required hold time and press the ENTER key.
Note: When the hold time is set to zero, it is not displayed on the default screen.
II.6 Run Time
Run time sets the the time period of spindle rotation. The run time range is 0 to 999.
Press the RUN TIME key and the current run time will blink on the default screen. Use the
number keys to type in the required run time and press the ENTER key.
Note: Run time will be shown on the default screen only when hold time is set to zero.
A run time of zero sets the viscometer to infinite run mode. In this mode, the spindle will rotate
at the set speed for as long as the RUN button is pressed. When the RUN key is released, the
spindle will stop rotating.
Note: With a run time of zero, the hold time will not be used.
II.7 Printing
Pressing the PRINT key at any time sends information on test parameters to the printer port.
However, viscosity, full scale range and shear stress data will only be printed after it is first
displayed during a test run.
At the end of a timed speed execution, data will automatically be sent to the printer port.
To print a heading, press and hold the STOP/ESCAPE key and press the PRINT key.
CAP 1000+ PRINT OUTPUT
VISCOSITY F.S.R. TEMP S.STRESS S.RATE SPEED TIMER CONE
(POISE) (%) (Deg C) (D/CM2) (1/sec) (RPM) (SEC) No.
- - 25.0 - 10000 0750 20 02
A maximum of 999 seconds can be printed when running in manual TIMER mode
(00). Over 999 seconds will print EEE.
Note: TheTIMER(SEC)columnwillindicatetheaccumulatedtimeofrunningatthemoment
the print key is pressed while the cone is rotating. This time value will not include the
hold time.

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II.8 Run and Stop Keys
The RUN key has three functions:
1. Press RUN to execute a timed measurement.
2. Press and hold the RUN key for continuous rotation when 00 is the timer setting.
3. Used in executing a cone calibration.
The STOP key has three functions:
1. Stops the cone rotation at any time.
2. Pressing and holding the STOP/ESCAPE key during power up selects the viscosity
display units and speed of rotation.
3. Pressing and holding the STOP and PRINT keys simultaneously executes the printing
of a new heading (Section II.7).

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III. OPERATION
The CAP Series Viscometers rotate a very precisely machined conical spindle over a tempera-
ture controlled plate shearing the test sample at a single rotational speed. The CAP 1000+
operates at 750 RPM and 900 RPM.
III.1 Accuracy of Measurement
Table III.1 indicates the accuracy of the viscosity measurement with CAP spindles 1-6. This
accuracy depends on both the rotational speed of the cone and the percent of full scale range (in
Poise) at which viscosity is measured. The accuracy for viscosity data provided by CAP Vis-
cometers is the indicated percentage of the full scale range. See AppendixA for information on
how to determine Full Scale Viscosity Range (FSR).
Please contact Brookfield for accuracy information for CAP spindles 07-10.
Table III-1 Accuracy of Viscosity Measurement
CAP 1000+L VISCOMETERS
FULLSCALE VISCOSITY RANGE ACCURACY
Cone 750 RPM 900RPM Over 900 RPM to 1000 RPM
01 ≤±2.0% ≤±2.0%
02 ≤±2.0% ≤±2.0%
03 ≤±2.0% ≤±2.0%
04 ≤±3.0% ≤±4.0%
05 ≤±4.0% ≤±6.0%
06 ≤±7.0% ≤±10.0%
Varies depending on the
thermal conductivity of the
sample being measured
FULLSCALE VISCOSITY RANGE ACCURACY
Cone 750 RPM 900RPM Over 900 RPM to 1000 RPM
10 to 100% FSR ≤50% FSR >50% FSR FSR = Full Scale Range
01 ≤±2.0% ≤±2.0% ≤±4.0%
02 ≤±2.0% ≤±2.0% ≤±4.0%
03 ≤±2.0% ≤±2.0% ≤±4.0%
04 ≤±3.0% ≤±3.0% ≤±6.0%
05 ≤±4.0% ≤±4.0% ≤±8.0%
06 ≤±5.0% ≤±5.0% ≤±10.0%
Varies depending on the
thermal conductivity of the
sample being measured
Viscometer Temperature Control Accuracy
CAP1000L & H ±0.2°C
CAP 1000+H VISCOMETERS

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III.2 Repeatability
The CAP1000+ Viscometer is repeatable to ±0.5% of the full scale viscosity range (FSR). Due
to shear heating considerations which occur in high shear rate instrumentation, the measure-
ment of NIST Viscosity Standard Fluids at rotational speeds above 900 RPM will show a de-
crease in viscosity with an increase in rotational speed (shear rate).
Normal forces due to the shearing of a viscoelastic fluid (such as paint) are accounted for in the
CAP Series Viscometers by weight on the spindle column of 3.4 Newtons (340,000 Dynes)
total force. This is done to avoid having the cone lift off the plate, thereby changing the cone
plate geometry and producing incorrect viscosity readings. For normal forces greater than 3.4
Newtons(340,000 Dynes) total force, additional externally mounted weights are required. How-
ever, more weight means more wear on the cone and plate. Additional weights should only be
considered when definitely required and removed when not required.
Contact Brookfield Engineering Laboratories or your Brookfield Dealer/Distributor/Represen-
tative for details on the above information.
III.3 Making Viscosity Measurements
The following procedure is recommended for making a viscosity measurement.
With the viscometer on a clean, level surface, connect it to the proper power supply (Section
I.4).
1. Turn the power switch ON (Section II.1).
The procedure assumes that the following list has been done:
a) If the viscometer has been “off” for an extended period (i.e., overnight) a “warm up”
period of 30 minutes is suggested. The default temperature (25°C) is used for low
temperature instruments (i.e., CAP1000+L). The default temperature for high tem-
perature is 50°C (i.e., CAP1000+H). If a cone calibration is to be done immediately
after the warm up period, temperature should be set to 60°C (calibration temperature
for high temperature instruments) to save some time.
b) The cone calibration procedure (Appendix B) should have been done for all cones
which are used with the instrument. Cone calibration is only required when a new
cone (i.e., replacement for lost/damaged cone) is used, or when calibration check
fails.
c) When making measurements with low temperature instruments (CAP1000+L), the
solvent trap may not be required (for the containment of solvents and/or prevention of
sample “drying”). The trap should be used for all measurements with high tempera-
ture instruments (CAP1000+H).
d) If a printer is to be used, it should be connected (AC power & viscometer to printer
cable). The CAP1000+ will print automatically when a reading is taken if the printer
is connected and “on line.”
Select and attach the cone (Section II.2).
Notes: 1. Lock the cone tightly into the adapter.

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2. When measuring volatile samples such as paints and coatings, and when
using either a high temperature CAP 1000+H or CAP 2000+H, the sol-
vent trap must be put in place over the cone to prevent the test sample
from drying out during the rotation of the cone.
Set the temperature control (Section II.5).
2. Set the cone number.
3. Lower the handle placing the cone onto the plate. Lock the handle into its lowest position.
Drop the solvent trap over the cone.
Note: Allowten(10)minutesfortheconetocometoequilibriumtemperaturewiththeplate.
4. Raisethehandle. Placethesampletobe measured onto the plate below the coneandsolvent
trap. RefertoAppendixAforrecommendedsamplesizes. Lowertheconeandsolvent trap.
Note:1. Lower the handle gently. DO NOT FORCE THE CONE ONTO THE
PLATE.
2. The sample must completely cover the face of the cone and extend beyond the
edge of the cone about 1.0 mm (see table A-1 for sample size).
3. Release the solvent trap placing it onto the plate over the cone so it does not
touch the cone shaft.
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 the
testing.
5. Allow the cone, plate and sample to equilibrate to the temperature control setting.
Note:A minimum of one (1) to three (3) minutes equilibrium time is recommended,
depending upon the sample.
6. Set the Run Time for rotating the cone (Section II.6) and the Hold Time.
7. Put the printer on-line (optional, Section II.7).
8. Press the RUN key and execute the viscosity measurement.
Note: Due to the dynamics of shearing a fluid in the CAP “H” series Viscometers, the
temperature display may indicate a deflection from the equilibrium temperature
setting as the cone begins rotating at high shear rates. The temperature display may
indicatethetemperatureof the plate andthemomentarychangesshow the cycling of
thetemperaturecontrolathightemperature. Theprecisionof the viscosity measure-
ment is maintained within the limits specified in Table 3.1.
9. Read the results of the sample test on the printer or write down the test conditions and
viscosity results from the viscometer display.

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10. Relocate the solvent trap onto the cone adapter and raise the handle.
11. It is recommended to remove the cone for cleaning. However, with care, the cone can be
cleaned in place.
12. Clean the viscometer plate (refer to Section I.8).

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APPENDIX A - Cone Numbers, Sample Sizes, Viscosity Ranges
CAP 1000 AND 2000 VISCOMETERS
N = RPM
Cone Shear Rate Sample Size Calibrating Fluid Calibrating Fluid
Number1(sec-1) (micro liters) Low Temp Cap at 25°C High Temp Cap at 60°C
Part No. *Viscosity Part No. *Viscosity
*Approximate Value
01 13.33N 67 CAP1L - 100 cP CAP1H - 100 cP
02 13.33N 38 CAP2L - 170 cP CAP2H - 180 cP
03 13.33N 24 CAP3L - 350 cP CAP3H - 350 cP
04 3.33N 124 CAP4L - 700 cP CAP4H - 700 cP
05 3.33N 67 CAP5L - 1400 cP CAP5H - 1400 cP
06 3.33N 32 CAP6L - 3500 cP CAP6H - 3500 cP
07 2N 1700 CAP7L - 1330 cP CAP7H - 1330 cP
08 2N 400 CAP8L - 5300 cP CAP8H - 5300 cP
09 2N 100 CAP9L - 21,250 cP CAP9H - 21,250 cP
10 5N 170 CAP10L - 240 cP CAP10H - 240 cP
Table A-1
750 RPM 900 RPM
Cone
Number1CAP 1000 VISCOSITY RANGES (POISE)
01 0.25 - 2.5 0.21 - 2.08 1,875 0.45 1.511
02 0.5 - 5.0 0.42 - 4.17 3,750 0.45 1.200
03 1.0 - 10.0 0.83 - 8.33 7,500 0.45 0.953
04 2.0 - 20.0 1.67 - 16.67 15,000 1.8 1.200
05 4.0 - 40.0 3.33 - 33.33 30,000 1.8 0.953
06 10.0 - 100.0 8.33 - 83.33 75,000 1.8 0.702
07 0.42 - 4.2 0.347 - 3.47 3,150 3.0 2.399
08 1.67 - 16.7 1.39 - 13.9 12,500 3.0 1.511
09 6.67 - 66.7 5.56 - 55.6 50,000 3.0 0.953
10 0.667 - 6.67 0.556 - 5.56 5,000 1.2 1.511
Cone
Range
Coefficient
Cone
Angle
(degrees)
Cone
Radius
(cm)
Table A-2
1
Number is marked on the cone shaft.

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SAMPLE SIZE
It is necessary that sufficient sample is placed between the cone and plate to completely cover
the surface of the cone when the cone is locked in the RUN position. With sufficient sample,
an excess of about 1 mm in width will be seen around the periphery of the cone edge.
For calibration and best reproducibility of results, the sample sizes shown inTableA1 should be
used.
CAP 1000+ RANGES FOR CONES 01 THROUGH 10
To determine the full scale viscosity range (FSR) for any cone/speed, divide the Cone Range
Coefficient (refer to Table A2) by the rotational speed (RPM).
Full Scale Viscosity Range (Poise) = Cone Range Coefficient Equation A1
RPM
CAP 1000+ RANGES FOR CONES 11 THROUGH 20
Spindle Multiplier Constant (SMC):
SMC = (supplied by the manufacturer)
Shear Rate Constant (SRC):
SRC = (supplied by the manufacturer)
Viscosity (poise) = Shear Stress (dynes/cm2)Equation A2
Shear Rate (sec-1)
Shear Stress (dynes/cm2) = Viscosity (poise) xShear Rate (sec-1)Equation A3
Shear Rate =
ω
sin θ
Equation A4
ω= Cone Speed (rad/sec) = (
2π
60
)x N
N = RPM
θ= Cone Angle (degrees)
r = radius of cone spindle
Viscosity (poise) = Full Scale Viscosity Range x(% FSR) Equation A5
100

Brookfield Engineering Labs., Inc. Page 19 Manual No. M02-312
EXAMPLE: CAP 1000+L Viscometer; Cone (02); running at 750 RPM;
temperature 25.0°C; % FSR = 73.8. Determine the viscosity (poise),
shear stress (dynes/cm2), shear rate (sec-1).
Using Equation A2, determine the full scale viscosity range at 750 RPM:
Full Scale Viscosity Range (poise) = 3,750 = 5.00 poise
750
Using Equation A5, determine the viscosity at 73.8% of full scale range:
Viscosity (poise) = 5.00 (poise) x 73.8 = 3.69 poise
100
Using Equation A4, determine the shear rate:
Shear Rate (sec-1) = (2)(3.1416)(750) = 10,000 sec-1
(60)(sine 0.45)
Using Equation A2, determine the shear stress:
Shear Stress (dynes/cm2) = (3.69)(10,000) = 36,900 dynes/cm2

Brookfield Engineering Labs., Inc. Page 20 Manual No. M02-312
APPENDIX B - Calibration Procedures
Normally there is no requirement to perform a cone calibration. Cones supplied at the time of
order are calibrated to the viscometer prior to shipment.
Verification of Calibration
At selected intervals, depending upon usage and number of operators, the CAP Viscometer
calibration should be verified using NISTFluids. Referring toAppendixA(TableA-1), find the
appropriate NIST Fluid(s) for the cone(s) being used.
With the viscometer set up, perform viscosity measurements following the outline of Section
III. Prior to pressing the RUN key to initiate a cone calibration, we recommend a period of
thermal equilibrium of approximately 30 minutes for the fluid, cone and plate. This period
should begin immediately after entering the calibration temperature and associated viscosity
value (in cP). Execute viscosity measurement and record results.
Verify the result to have an accuracy according to the information in Section III (Table III-1).
If the calibration is outside the accuracy limits, proceed with the following Cone Calibration.
Interpretation of Calibration Test Results:
When verifying the calibration of the CAP 1000+, the instrument and viscosity standard fluid
error must be combined to calculate the total allowable error.
The CAP 1000+ accuracy is defined in Section III.1 as a function of spindle number 03.
Brookfield Viscosity Standards Fluids are accurate to (+/-) 1% of their stated value.
Example: Calculate the acceptable range of viscosity using CAP 1000+ with Spindle 03 at
900 RPM; Brookfield Standard Fluid CAP-3L with a viscosity of 350 cP at 25°C:
1) Calculate full scale viscosity range using the equation:
Where:
Range Coefficient = 7500 from Table A2
The viscometer is accurate to (+/-) 16.7 cP (which is 2% of 833)
2) The viscosity standard fluid is 350 cP. Its accuracy is (+/-)1% of 350 or (+/-)3.5 cP.
3) Total allowable error is (16.7 + 3.5) cP = (+/-) 20.2 cP (0.2 P).
Full Scale Viscosity Range [P] = Range Coefficient
RPM
Full Scale Viscosity Range 7500
900 =8.33 P (833 cP)