Brookfield CAP 2000+L User manual

Brookeld Engineering Labs., Inc. Page 1 Manual No. M02-313E1209
SPECIALISTS IN THE
MEASUREMENT AND
CONTROL OF VISCOSITY
T
EL
508-946-6200
F
AX
508-946-6262
or 800-628-8139 (USA e xcluding MA)
I NTERNET http://www .brookeldengineering.com
BROOKFIELD ENGINEERING LABORATORIES, INC.
11 Commerce Boulevard, Middleboro, MA 02346 USA
with oces in:
Boston • Chicago • London • Stuttgart • Guangzhou
BROOKFIELD CAP 2000+
Viscometer
Operating Instructions
Manual No. M02-313E1209

Brookeld Engineering Labs., Inc. Page 2 Manual No. M02-313E1209
TABLE OF CONTENTS
I. INTRODUCTION..................................................................................................................... 3
I.1 Components....................................................................................................................................................3
I.2 Utilities...............................................................................................................................................................4
I.3 Specications ..................................................................................................................................................4
I.4 Dimensional Details...................................................................................................................................... 6
I.5 Installation........................................................................................................................................................ 7
I.6 Safety Symbols and Precautions..............................................................................................................8
I.7 Key Functions..................................................................................................................................................9
I.8 Viscosity and Temperature Display..........................................................................................................9
I.9 Cleaning ..........................................................................................................................................................10
II. GETTING STARTED .............................................................................................................. 11
II.1 Power ON ........................................................................................................................................................11
II.2 Cone Spindle Selection and Setting .....................................................................................................12
II.3 Speed Setting................................................................................................................................................13
II.4 Temperature Control Setting...................................................................................................................14
II.5 Hold Time Settings ......................................................................................................................................14
II.6 Run Time .........................................................................................................................................................14
II.7 Printing............................................................................................................................................................15
II.8 Run and Stop Keys.......................................................................................................................................15
II.9 Parameter Display........................................................................................................................................16
III. OPERATION.......................................................................................................................... 17
III.1 Full Scale Range and Accuracy of Measurement...............................................................................17
III.2 Accuracy of Viscosity and Temperature ..............................................................................................18
III.3 Calibration Verication..............................................................................................................................20
III.4 Cone Calibration..........................................................................................................................................22
III.5 Repeatability.................................................................................................................................................24
III.6 Making Viscosity Measurements...........................................................................................................25
III.7 Computer Control.......................................................................................................................................26
APPENDIX A - Variables in Viscosity Measurement .....................................................................................28
APPENDIX B - Communications .........................................................................................................................30
APPENDIX C - Warranty Repair and Service ...................................................................................................34
This manual intended for use with CAP 2000+ series viscometers which have serial
numbers beginning with a prex of“CPN”.
CAP1000 and 2000 Viscometers with a serial number prex of“CP” require a dierent
manual. Please contact Brookeld or your authorized dealer/representative to obtain
this manual.

Brookeld Engineering Labs., Inc. Page 3 Manual No. M02-313E1209
I. INTRODUCTION
The CAP 2000+ Series Viscometers are medium to high shear rate instruments with Cone Plate
geometry and integrated temperature control of the test sample material. Rotational speed selec-
tion ranges from 5 to 1000 RPM. Viscosity measurement ranges depend upon the cone spindle
and the rotational 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 possible 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 CAP 2000+ Viscometer can display either CGS or SI units:
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 2000+ Viscometer outputs 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; see Figure I-1
Part No.
1. CAP 2000+ 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 ..........................................C1K-63
5. Power Cord: 115V..................................DVP-65
220V .................................DVP-66
UK.....................................DE-8
Germany ...........................DE-7
6. Operating Instructions Manual ................M02-313
The following optional items may have been included:
Part No.
7. Viscosity Standard Fluid for calibration See Table III-5 and III-6 in Section III

Brookeld Engineering Labs., Inc. Page 4 Manual No. M02-313E1209
Please check to be sure that you have received all components and that there is no damage. If
you are missing any parts, please notify Brookeld or your local dealer immediately. Any ship-
ping damage must be reported to the carrier. Save the packing container, if possible, for future
use when returning the viscometer to Brookeld or an authorized dealer for service.
Handle for Raising
and Lowering
Viscometer Head
Solvent Trap
P/N C1K-63
Column
Head Serial Tag Info
on Back of
Viscometer Head
Base
Console
Cone Spindle
P/N CAP-S-XX
The Flat
Thumb Screw
P/N C1K-34Y
Figure I-1: Components
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; Fast Acting 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 Specications
Torque Range: Low 797-7,970 dyne•cm (designated on serial tag as 1/23 CAP)
High 18,100-181,000 dyne•cm (designated on serial tag as 1.0 CAP)
Speeds: Variable speed from 5-1000 RPM

Brookeld Engineering Labs., Inc. Page 5 Manual No. M02-313E1209
Temperatures: CAP 2000+L 5°C (or 15°C below ambient, whichever is higher) to 75°C
CAP 2000+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.
Solvent Trap (P/N C1K-63) is made of teon.
Operating CAP 2000+ Viscometers must be operated within the following
Environment: ambient temperatures: +5°C (41°F) to 40°C (104°F)
and humidity: 20% to 80% R.H. (non-condensing atmosphere)

Brookeld Engineering Labs., Inc. Page 6 Manual No. M02-313E1209
I.4 Dimensional Details

Brookeld Engineering Labs., Inc. Page 7 Manual No. M02-313E1209
I.5 Installation
DO NOT lift the viscometer by the handle or head! LIFT only by the base console
or column!
1) Set the viscometer on a clean level bench surface.
2) Remove shipping foam insert from the plate area on the CAP Viscometer. Store the
foam insert for future use when shipping or transporting CAP Viscometer.
Foam Insert Used
When Shipping
CAP Viscometer
Figure I-2: Detail of Foam Insert
3) Verify that the viscometer’s power requirements match your power source BEFORE con-
necting it to power.
The AC input voltage and frequency must be within the appropriate range as shown
on the back of the viscometer head .
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 printer and the CAP 2000+ are off when connecting cables.

Brookeld Engineering Labs., Inc. Page 8 Manual No. M02-313E1209
I.6 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 specic warning or caution information to avoid personal injury
or damage to the instrument.
Safety Overview
If this instrument is used in a manner not specied by the manufacturer, the protection
provided by the instrument may be impaired.
This instrument is not intended for use in a potentially hazardous environment.
In case of emergency, turn off the instrument and then disconnect the electrical cord
from the wall outlet.

Brookeld Engineering Labs., Inc. Page 9 Manual No. M02-313E1209
I.7 Key Functions
Figure I-3 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
Stops cone spindle rotation at any time. Exits data
entry eld.
DELETE
This key clears entered values for input selec-
tions.
PRINT
This key sends data to the parallel printer, when
connected.
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.8 Viscosity and Temperature Display
Viscosity is displayed in either P=Poise or cP=Centipoise (CGS system) or Pa•s=Pascal
seconds or mPa•s=milliPascal seconds (SI system). If the viscosity measurement is over
range, “EEEE” will be displayed. Brookeld recommends a minimum torque reading of 10%
when making viscosity measurements. If the torque value is between 0 and 10%, the display
will ash to indicate an under range condition. If the viscometer nal reading is below zero,
negative values will be displayed.
Temperature is displayed in °C=degrees centigrade.
Figure I-3
CAP 2000+ VISCOMETER

Brookeld Engineering Labs., Inc. Page 10 Manual No. M02-313E1209
I.9 Cleaning
Instrument, Keypad & Painted Surfaces:
Clean with dry, non-abrasive cloth. Do not use solvents or cleaners.
Immersed Components (spindles/cones) and temperature controlled 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 compo-
nents.
Do not use metal objects to clean the plate surface, as scratching of the plate may oc-
cur and compromise cone calibrations.
Solvent Trap:
Solvent Trap (P/N C1K-63) is made of Teon. Clean with non abrasive cloth and solvent
appropriate for sample material that is not aggressive to Teon.
When cleaning, take care not to apply excessive force which may bend the spindle
shaft or otherwise damage the instrument.

Brookeld Engineering Labs., Inc. Page 11 Manual No. M02-313E1209
II. GETTING STARTED
II.1 Power ON
Turn the power ON using the switch located on the rear of the base console.
The start-up screen will be displayed for four seconds and will indicate the viscometer model,
version number and torque range.
BROOKFIELD
CAP 2000+ VISCOMETER
VERSION 1.10
1.0 CAP
BROOKFIELD
CAP 2000+ VISCOMETER
VERSION 1.10
22.7 CAP
Figure II-1A Figure II-1B
Start-up Screen for High Torque CAP Start-up Screen for Low Torque CAP
After four (4) seconds, the main screen will be displayed (Figure II-2).
0.00P 0.0%
Run 15 Spindle 04
50.0C 900 RPM
Figure II-2
The instrument will be set to the default temperature:
CAP L Series Viscometer 25.0°C
CAP H Series Viscometer 50.0°C
If the CAP 2000+ Viscometer is connected to a PC via the serial port on the rear of the base
console, the main screen display is EXTERNAL.
Special Functions
Units of measure and speed control may be selected through the special functions screen. This
screen is accessed by pressing the STOP key during instrument power up.
The CAP 2000+ can be congured to control speed by either rotations per minute (RPM) or
shear rate (1/SEC). This selection is set by choosing 1=SPEED CONTROL in the special func-
tions screen, then selecting 1=RPM or 2=1/SEC and pressing ENTER.
The CAP 2000+ can be congured to display viscosity in one of four units: Poise (P), Centipoise
(cP), Pascal Seconds (Pa•s) or milliPascal seconds (mPa•s). This selection is set by choos-
ing 2=Units of Measure in the special functions screen, selecting 1=P, 2=cP, 3=Pa•s,or
4=mPa•s, and then pressing ENTER.
Once the CAP 2000+ has been congured, the instrument must be turned OFF. The congura-
tion will be stored in memory.
Note: When operating the CAP 2000+ with shear rate as the method of speed control, the
shear rate value entered may be adjusted based on the shear rate multiplier for the
spindle. For example: if using cone 4 (shear rate multiplier of 3.33), an entered shear
rate of 51 1/SEC will be displayed as 50 1/SEC.

Brookeld Engineering Labs., Inc. Page 12 Manual No. M02-313E1209
II.2 Cone Spindle Selection and Setting
Raise the viscometer handle to its highest position.
The CAP cones have viscosity ranges as shown in Appendix A. After selecting the appropriate
cone for the viscosity range to be utilized, carefully attach the cone to the viscometer as shown
in Figure II-3.
Be sure to insert the spindle completely into the adapter sleeve; align the at (see Figure I-1)
on the spindle with the thumb screw and then tighten.
When using the solvent trap (Figure II-2), connect it to the cone adapter by sliding it up,
passing the slot by 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 rmly and securely.
Thumb Screw
Solvent Trap Cone Spindle
Figure II-3: Cone Attachment
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 rst 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:

Brookeld Engineering Labs., Inc. Page 13 Manual No. M02-313E1209
Spindle 04
CALIBRATE? YES/NO
Figure II-4
If you are using the CAP Viscometer for the rst time or have just received the instrument back
from being serviced, press YES and see Section III. Cones supplied at the time of order are
calibrated to the viscometer by Brookeld prior to shipment, but should still be veried with a
calibration check prior to use for the rst time. Cones purchased separately at a later time by
the user must also be calibrated prior to making viscosity measurements. If you have 2 cone
spindles that are identical (have the same number), you must do a cone calibration when you
swap them.
Otherwise, there is no requirement to perform a cone calibration.
Note:1. CAP Viscometers 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 Section III).
2. A special feature of the CAP series viscometers allows the user to perform a cone
calibration with viscosity standard uids.
3. Cones entered as 11 through 99 must be rst calibrated following the directions in
Section III.
If you are not going to calibrate the cone, continue by pressing the NO key, then the ENTER key.
The viscometer will display the MAIN SCREEN (Figure II-1). Should you subsequently run
a test and observe that the instrument is reading all “0s”, the “P” for Poise is ashing, and the
“%” symbol is ashing, then the cone spindle you are using is not calibrated. You must perform
the cone spindle calibration to rectify the problem.
If you are going to calibrate the cone, press the YES key, refer to Section III and follow the
calibration instructions under Cone Calibration.
II.3 Speed Setting
The CAP 2000+ is a variable speed viscometer. The speed of rotation is shown in the lower
right corner of the display. To change the speed of rotation, enter the new speed using the
number keys. The new speed will be shown in the lower right hand corner of the display. To
accept the new speed, press ENTER.
The new speed may be cancelled by pressing ESCAPE before pressing ENTER.
To begin spindle rotation, press the RUN key.
Note: The speed cannot be changed while the motor is running.
Speed control may be congured to either shear rate or rotations per minute (see Special Func-
tions in section II.1). Data entry for speed selection is the same in either conguration.
Data entry must be in whole numbers.

Brookeld Engineering Labs., Inc. Page 14 Manual No. M02-313E1209
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°C on low temperature models and 50.0°C on 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
Use the number keys to type in the required set point. The temperature can be set in increments
of 0.1°C. You can turn off the temperature control on a high temperature unit by entering 0.
Use the ENTER key to accept the 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 tem-
perature set point, allow sufcient time for the plate to reach the desired temperature.
It is recommended to have the spindle in contact with the plate prior to introducing the
sample material to ensure that the spindle is also at the temperature of test. Brookeld
recommends using the solvent trap at all times to enhance the temperature control
of the sample material. After inserting the sample material onto the plate, lower the
spindle and solvent trap and allow sufcient time for thermal equilibrium prior to
starting the test.
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. Run
time will be shown on the default screen only when hold time is set to zero.
Note: With a run time of zero, the hold time will not be used.
II.6 Run Time
Run time sets the time period of spindle rotation. The run time range is 0 to 999 second.
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.
A run time of zero sets the viscometer to innite run mode. In this mode, the spindle will rotate
at the set speed for as long as the RUN key is pressed. The display will shown “MANUAL”.
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.

Brookeld Engineering Labs., Inc. Page 15 Manual No. M02-313E1209
The time required for reading stabilization will depend on the speed of rotation and the nature
of the test sample. Longer runs times are recommended at lower speeds.
Speed Run
50-1000 RPM 12 seconds
20-50 RPM 20 seconds
5-20 RPM 30 seconds
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 rst
displayed during a test run.
To print a heading, press and hold the STOP/ESCAPE key and press the PRINT key. Then start the
test by pressing the RUN key. Press the PRINT key whenever data is desired during the test.
Example of CAP 2000+ PRINT OUTPUT showing heading and data.
VISCOSITY
(POISE)
F.S.R.
(%)
TEMP
(Deg C)
S.STRESS
(D/CM2)
S.RATE
(1/sec)
SPEED
(RPM)
TIMER
(SEC)
CONE
No.
- - 25.0 - 10000 0750 20 02
Figure II-5
A maximum of 999 seconds can be printed when running in manual TIMER mode (00). Over
999 seconds will print EEE.
The TIMER (SEC) column will indicate the accumulated time of running at the moment the
print key is pressed while the cone is rotating. This time value will not include the hold time.
At the end of a test, data will automatically be sent to the printer port.
II.8 Run and Stop Keys
The RUN key has three functions:
1. Press RUN to begin a test.
2. Press and hold the RUN key for continuous rotation when 00 is the run time 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 special func-
tions mode where the viscosity display units and speed of rotation may be changed.
(Section II.1)
3. Pressing and holding the STOP and PRINT keys simultaneously executes the printing of
a new heading (Section II.7).

Brookeld Engineering Labs., Inc. Page 16 Manual No. M02-313E1209
II.9 Parameter Display
The parameter display will appear, as shown in Figure II-6, immediately after the RUN key is
pressed. All relevant measurement parameters will be shown for 5 seconds including speed,
shear rate, run time, hold time and spindle. The display will return to the default screen after
ve seconds.
Note: The viscometer will be operating according to the selected parameters while the
parameter display screen is shown.
Speed 15 RPM
Shear Rate 50 1/sec
Run 20 S Hold 10S
Spindle 04
Figure II-6

Brookeld Engineering Labs., Inc. Page 17 Manual No. M02-313E1209
III. OPERATION
The CAP 2000+ Viscometer rotates a precisely machined cone spindle over a temperature
controlled plate shearing the test sample over a range of speeds from 5 to 1000 RPM. This
provides a comprehensive capability to analyze materials for viscosity behavior as a function
of both shear rate and temperature. Tests can be run in standalone mode or under PC control.
This chapter explains how to use the CAP 2000+ toward these objectives.
III.1 Full Scale Range and Accuracy of Measurement
Full Scale Range (FSR) viscosity is the maximum viscosity that can be measured and occurs
when the % torque is 100. Brookeld recommends that viscosity measurements be made be-
tween 10 and 100% torque.
There are two tables to consult for viscosity range information, depending on which torque
model viscometer you purchased. To determine which torque model you have, consult the se-
rial tag of your viscometer or the certicate of calibration that accompanied the instrument or
the display on power up.
23CAP 2000+ = Low Torque CAP 2000+ = High Torque
Full Scale Range (FSR) is based on the cone spindle your are using, the torque model of your
viscometer, and the speed of spindle rotation. The tables below provide information on FSR
by torque model for the most common factory set speeds:
Table III-1: Full Scale Range Viscosity for Low Torque CAP 2000+
Cone
Number
Cone
Range
Constant
Shear Rate
Constant
FSR Poise
at 100
RPM
FSR
Poise at
750 RPM
FSR Poise
at 900
RPM
FSR Poise at any
RPM
01 1875 13.33N 0.83 0.11 .0597 1875/(22.7*N)
02 3750 13.33N 1.65 0.22 .165 3750/(22.7*N)
03 7500 13.33N 3.30 0.44 .330 7500/(22.7*N)
04 15000 3.33N 6.61 0.88 0.73 15000/(22.7*N)
05 30000 3.33N 13.22 1.76 1.47 30000/(22.*N)
06 75000 3.33N 33.04 4.41 3.67 75000/(22.7*N)
07 3150 2N 1.39 ‡ ‡ 3150/(22.7*N)
08 12500 2N 5.51 ‡ ‡ 12500/22.7*N)
09 50000 2N 22.3 ‡ ‡ 50000/(22.7*N)
10 5000 5N 2.20 0.29 2.20 5000/(22.7*N)
N= RPM
Poise x 100 = centiPoise
‡use of this cone at these RPM is not recommended

Brookeld Engineering Labs., Inc. Page 18 Manual No. M02-313E1209
Table III-2: Full Scale Range Viscosity for High Torque CAP 2000+
Cone
Number
Cone
Range
Constant
Shear Rate
Constant
FSR Poise
at 100
RPM
FSR
Poise at
750 RPM
FSR Poise
at 900
RPM
Poise at any RPM
01 1875 13.33N 18.75 2.50 2.08 1875/N
02 3750 13.33N 37.50 5.00 4.17 3750/N
03 7500 13.33N 75.00 10.00 8.33 7500/N
04 15000 3.33N 150.00 20.00 16.67 15,000/N
05 30000 3.33N 300.00 40.00 33.33 30000/N
06 75000 3.33N 750.00 100.00 83.33 75000/N
07 3150 2N ‡‡ ‡ 3150/N
08 12500 2N ‡‡ ‡ 12500/N
09 50000 2N ‡‡ ‡ 50000/N
10 5000 5N 50.00 6.67 5.56 5000/N
N= RPM
Poise x 100 = centiPoise
‡Use of this cone at these RPM is not recommended
You can also determine FSR for any speed selection that is not in the above tables by doing a
simple calculation:
• For Low Torque CAP instruments:
Cone range constant / (22.7 * N) = FSR (Poise) where N = RPM
• For High Torque CAP instruments:
Cone range constant / N = FSR (Poise) where N = RPM
The last column in the above tables shows this calculation.
III.2 Accuracy of Viscosity and Temperature
The following tables indicate the accuracy of the viscosity measurement for the CAP 2000+
Viscometer using CAP spindles 01-10. This accuracy depends on both the rotational speed of the
cone and the percent of Full Scale Range (%FSR) in Poise at which the viscosity is measured.
Accuracy is stated in Poise (P) and is calculated as a % of the FSR viscosity.
To calculate accuracy:
• Determine FSR viscosity in Poise for the torque model, cone spindle, and speed of rotation,
using the information in Tables III-1 or III-2.
• Find the column that best denes the speed of rotation used for the measurement and your
reported % FSR from the measurement.
• Consult the table below to determine the accuracy of your measurement
• Multiply the accuracy by the FSR viscosity if you need your accuracy stated in Poise.

Brookeld Engineering Labs., Inc. Page 19 Manual No. M02-313E1209
Table III-3: Accuracy for Low Torque CAP 2000+
Cone ≤400 RPM 750 RPM 900 RPM 900 RPM
10-100% FSR 10-100% FSR ≤50% FSR >50% FSR
01 ±2.0% ±2.0% ±2.0% ±2.0%
02 ±2.0% ±2.0% ±2.0% ±2.0%
03 ±2.0% ±2.0% ±2.0% ±2.0%
04 ±2.0% ±2.0% ±2.0% ±2.0%
05 ±2.0% ±2.0% ±2.0% ±2.0%
06 ±2.0% ±2.0% ±2.0% ±2.0%
07 ±2.0% * * *
08 ±2.0% ±2.0% ±2.0% ±2.0%
09 ±2.0% ±2.0% ±2.0% ±2.0%
10 ±2.0% ±2.0% ±2.0% ±2.0%
* Not recommended for use at these RPM
Table III-4: Accuracy for High Torque CAP 2000+
Cone ≤400 RPM 750 RPM 900 RPM 900 RPM
10-100% FSR 10-100% FSR ≤50% FSR >50% FSR
01 ±2.0% ±2.0% ±2.0% ±4.0%
02 ±2.0% ±2.0% ±2.0% ±4.0%
03 ±2.0% ±2.0% ±2.0% ±4.0%
04 ±2.0% ±3.0% ±3.0% ±6.0%
05 ±2.0% ±4.0% ±4.0% ±8.0%
06 ±2.0% ±5.0% ±5.0% ±10.0%
07 ±2.0% * * *
08 ±2.0% * * *
09 ±2.0% * * *
10 ±2.0% ±2.0% ±2.0% ±2.0%
* Not recommended for use at these RPM
The specication of temperature accuracy on CAP Viscometers is stated below:
LOW TEMP UNITS:
• In ambient conditions of 15°C to 30°C, accuracy is +/- 0.5°C when the temperature set point
on the viscometer is 5°C to 75°C.
• In ambient conditions outside of 15°C to 30°C, accuracy is +/- 1.0°C when the temperature
set point on the viscometer is 5°C to 75°C.
HIGH TEMP UNITS:
• In ambient conditions of 15°C to 30°C, accuracy is +/- 0.5°C when the temperature set point
on the viscometer is 50°C to ≤100°C.

Brookeld Engineering Labs., Inc. Page 20 Manual No. M02-313E1209
• In ambient conditions of 15°C to 30°C, accuracy is +/- 1.0°C when the temperature set
point on the viscometer is 101°C to 235°C.
• In ambient conditions outside of 15°C to 30°C, accuracy is +/- 2.0°C when the temperature
set point on the viscometer is 50°C to ≤100°C.
III.3 Calibration Verication
Accuracy of the CAP 2000+ Viscometer can be veried by performing a calibration verica-
tion.
The cones/spindles that were shipped with the viscometer were calibrated to the viscometer by
Brookeld prior to shipment. If your viscometer was returned to Brookeld or an authorized
Brookeld Dealer, then any cones/spindles that were returned for service will have been cali-
brated to the viscometer prior to shipment.
When you receive the instrument, perform a calibration verication on each cone spindle to
ensure that each spindle is measuring correctly. Use the appropriate viscosity standard uid
dened in Table III-5 or III-6 for each spindle. This will ensure that everything is in good
working order and that the instrument and/or cone spindles have not experienced a change
during shipment. If the calibration verication fails then you can take advantage of the CAP
Viscometer’s unique feature which allows the operator to recalibrate each cone spindle to the
CAP Viscometer (See Section III.4).
Calibration verication of your viscometer should also be performed when viscosity readings
with your product are suspect. Verifying the calibration will determine if the cone needs to
be recalibrated to the instrument. This will help you to determine if the discrepant readings
on your product are due to cone/instrument performance, or your method or your product.
Complete cone recalibration is discussed in Section III.4.
To perform a cone calibration verication, you will need a mineral oil from Table III-5 or Table
III-6. Determine what range model CAP 2000+ Viscometer you have (Low Torque or High
Torque), which temperature range (L = Low, H = High; consult the instrument serial tag) and
what cone your are using.
You must use the following method to verify calibration of each cone spindle.
1. Attach solvent trap and spindle and lower viscometer head. Put the cone in the down posi-
tion, and make sure that the solvent trap is covering the spindle.
2. Allow the viscometer to stabilize for at least 30 minutes at 25°C (Low Temp units) or at
60°C (High Temp) if the temperature that you normally operate is different; otherwise, wait
5 minutes, then make sure the cone is in the down position and that the solvent trap is on.
3. At the end of the temp stabilization period, dispense the appropriate volume of uid (consult
Table III-5 or Table III-6). Figure III-1 shows how to dispense the uid onto the plate and
determine visually if the amount is appropriate.