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Brookfield Engineering Laboratories, Inc. Page 1 Manual No. M98-211-E0912

BROOKFIELD DV-III ULTRA

Programmable Rheometer

Operating Instructions

Manual No.M98-211-E0912

SPECIALISTS IN THE

MEASUREMENT AND

CONTROL OF VISCOSITY

TEL 508-946-6200FAX 508-946-6262

or 800-628-8139 (USA excluding MA)INTERNET http://www.brookfieldengineering.com

BROOKFIELD ENGINEERING LABORATORIES, INC.11Commerce Boulevard, Middleboro, MA 02346 USAwith offices in : Boston Chicago London Stuttgart Guangzhou


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Brookfield Engineering Laboratories, Inc. Page 2 Manual No. M/98-211-B0104Brookfield Engineering Laboratories, Inc. Page 2 Manual No. M98-211-E0912


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Table of Contents

I. Introduction .......................................................................................................... 5

I.1 Torque Measurement .................................................................................................................5

I.2 Viscosity Units of Measurement ................................................................................................5 I.3 Yield Stress Measurement ........................................................................................................6

I.4 Components ..............................................................................................................................7

I.5 Dimensional Information ............................................................................................................8

I.6 Utilities .......................................................................................................................................9

I.7 Specifcation ..............................................................................................................................9

I.8 Safety Symbols and Precautions ............................................................................................. 11

I.9 Data Retention ......................................................................................................................... 11

I.10 Set-Up ................................................................................................................................... 11

I.11 Connections ...........................................................................................................................15

I.12 Key Functions ........................................................................................................................16

I.13 Cleaning .................................................................................................................................17

II. Getting Started ................................................................................................... 18

II.1 Autozero .................................................................................................................................18

II.2 Rheometer Display .................................................................................................................18

II.3 Spindle Entry ..........................................................................................................................21

II.4 Direct Speed Entry .................................................................................................................23

II.5 External Control ......................................................................................................................24

II.6 Preventative Maintenance ......................................................................................................25

III. Making Viscosity and Yeild Measurements .................................................... 27

III.1 Quick Start .............................................................................................................................27 III.2 Preparations for Making Measurements ................................................................................28

III.3 Selecting a Spindle/Speed ....................................................................................................30

III.4 Multiple Data Points ...............................................................................................................30

IV. Programming the DV-III Ultra and Data Collection Methods/Analysis ......... 31

IV.1 Programming Concepts .........................................................................................................31

IV.2 DV-III Speed/Time Pair Programs for Making Viscosity Measurements ............................... 32

IV.3 Bevis Programs for Making Viscosity Measurements ...........................................................42

IV.3.1 Setting Up Bevis Programs ............................................................................................42

IV.3.1.1 Description of B.E.V.I.S. Commands ......................................................................43

IV.3.1.2 Example Programs .................................................................................................46 IV.3.2 Running Bevis Programs in Standalone Mode ............................................................... 47

IV.4 Choosing the Best Data Collection Method for Viscosity Tests .............................................49

IV.5 Data Analysis for Viscosity Tests ...........................................................................................50

IV.6 Automated Data Gathering and Analysis using Rheocalc .....................................................50

IV.7 Math Models .......................................................................................................................... 50

IV.7.1 The Power Law (Ostwald) Model ...................................................................................42

IV.7.2 The Herschel/Bulkley Model ...........................................................................................42

IV.7.3 The Bingham Model .......................................................................................................42

IV.7.4 The Casson Model .........................................................................................................42


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IV.7.5 Other Common Rheological Models .............................................................................. 42

IV.8 Yeild Stress Test Programs and Test Samples ......................................................................53

IV.8.1 Test Parameter Description ............................................................................................53

IV.8.2 Toolbar and Menu Options .............................................................................................57

IV.8.3 Data Page ......................................................................................................................60

IV.8.4 Graphs Page ..................................................................................................................62 IV.8.5 Examples of Yield Test Programs ...................................................................................65

IV.8.5.1 Example Application: Hair Gel .............................................................................. 65

IV.8.5.2 Example Application: Hand Cream .......................................................................66

IV.8.5.3 Example Application: Ketchup .............................................................................. 66

IV.8.5.4 Torque vs. Time for Various Food Products ...........................................................68

IV.8.6 Running Yield Test Programs in Stand-Alone Mode .....................................................69

IV.8.6.1 Data Output ...........................................................................................................73

IV.8.6.2 Printing A Program ................................................................................................73

IV.8.6.3 Test Results ...........................................................................................................75

V. OPTIONS ............................................................................................................. 77 V.1 Set Up ....................................................................................................................................77

V.2 Print ........................................................................................................................................77

V.3 Alarm ......................................................................................................................................78

V.4 Set Temperature .....................................................................................................................79

V.5 Data ........................................................................................................................................79

V.6 Timed Data Collection ............................................................................................................81

Appendix A - Cone/Plate Rheometer Set-Up...................................................................83 A.1 Electronic Gap Setting Features ............................................................................................83

A.2 Set-Up .....................................................................................................................................84 A.3 Setting the Gap .......................................................................................................................85

A.4 Verifying Calibration ................................................................................................................86

Appendix B - Viscosity Ranges ........................................................................................87

Appendix C - Variables in Viscosity Measurements .......................................................93

Appendix D1 - Spindle and Model Codes for Viscosity Tests .......................................95

Appendix D2 - Spindle Codes and Speeds for Yeild Tests ............................................99

Appendix E - Calibration Procedures .............................................................................102

Appendix F - The Brookfeld Guardleg ..........................................................................107

Appendix G - DV-III Ultra Stand Assembly .....................................................................109

Appendix H - DVE-50A Probe Clip ..................................................................................110

Appendix I - DV-III Ultra to Computer Command Set ....................................................111Appendix J - Fault Diagnosis and Troubleshooting .....................................................115

Appendix K - Online Help and Other Resources ...........................................................118

Appendix L - Warranty Repair and Service ....................................................................119

Viscosity Test Report .........................................................................................Tear out page

Table of Contents (cont'd)


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The Brookeld DV-III Ultra Programmable Rheometer measures uid parameters of Shear Stressand Viscosity at given Shear Rates. Viscosity is a measure of a uids resistance to ow. You willnd a detailed description of the mathematics of viscosity in the Brookeld publication MoreSolutions to Sticky Problems, a copy of which was included with your DV-III Ultra.

The principle of operation of the DV-III Ultra is to drive a spindle (which is immersed in the testuid) through a calibrated spring. The viscous drag of the uid against the spindle is measuredby the spring deection. Spring deection is measured with a rotary transducer. The viscositymeasurement range of the DV-III Ultra (in centipoise or cP) is determined by the rotational speedof the spindle, the size and shape of the spindle, the container the spindle is rotating in, and the fullscale torque of the calibrated spring.

The DV-III Ultra can also measure yield stress (in Pascals or Pa). See Section I.3 for more informationon yield stress.

I.1 Torque Measurement

There are four basic spring torque models offered by Brookeld: Spring TorqueModel dynecm mNm

LVDV-III Ultra 673.7 0.0673RVDV-III Ultra 7,187.0 0.7187HADV-III Ultra 14,374.0 1.4374HBDV-III Ultra 57,496.0 5.7496

The higher the torque calibration, the higher the viscosity measurement range. The viscositymeasurement range for each spring torque model may be found in Appendix B.

I.2 Viscosity Units of Measurement

All units of measurement are displayed according to either the CGS system or the SIsystem.

1. Viscosity appears in units of centipoise (shown as cP) or milliPascal-seconds (shownas mPas).

2. Shear Stress appears in units of dynes/square centimeter (D/cm2) or Newtons/squaremeter (N/m2).

3. Shear Rate appears in units of reciprocal seconds (1/SEC).4. Torque appears in units of dyne-centimeters or Newton-meters (shown as percent %

in both cases).

The equivalent units of measurement in the SI system are calculated using the followingconversions:

SI CGSViscosity: 1 mPas = 1 cPShear Stress: 1 Newton/m2 = 10 dyne/cm2

Torque: 1 Nm = 107dynecm

References to viscosity throughout this manual are done in CGS units.

I. INTRODUCTION


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I.5 Dimensional Information


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I.6 Utilities

Auto-sensing Power Supply:

Input Voltage: 90 - 260 VAC

Input Frequency: 50 - 60 Hz

Power Consumption: Less than 220 VA Main supply voltage uctuations are not to exceed 10% of the nominal supply voltage.

Power Cord Color Code:

United States Outside United States

Hot (live) Black Brown

Neutral White Blue

Ground (earth) Green Green/Yellow

I.7 Specifcation

Speed Ranges 0.01-250 RPM, 0.01 RPM increments from 0.01 to 0.99 RPM,

for viscosity tests: 0.1 RPM increments from 1.0 to 250 RPM

Speed Ranges Pre Shear 0.01 to 200 rpm

for yield tests: Zero 0.01 to 0.5 rpm

Yield Test 0.01 to 5 rpm

Time Intervals 100 msec - 1000 msec

for yield tests:

Viscosity Accuracy: 1.0% of full scale range for a specic spindle running at a

specic speed.

Temperature sensing range: - 100C to 300C (-148F to 572F)

Temperature accuracy: 1.0C from -100C to 150C

2.0C from +150C to 300C

Analog Torque Output: 0 - 1 Volt DC (0 - 100% torque)

Analog Temperature Output: 0 - 4 Volts DC (10mv /C)

Printer Output: Centronics, parallel or serial

Computer Interface: RS-232

USB

Torque Accuracy: 1.0% of full scale range

Torque Repeatability: 0.2%


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Operating Environment: Use indoors only.

5 C to 40 C temperature range (41 F to 104 F)

20% - 80% R.H.: non-condensing atmosphere

Pollution Degree II

Installation Category II

Altitude up to 2000 meters (max).

Weight: Gross Weight: 35 lbs. 15.9 kg Net Weight: 32 lbs. 14.5 kg

Carton Volume: 2.0 cu. ft. 0.057 m3

Ball Bearing Option:If you ordered the ball bearing suspension system with your new instrument, please note the

following:

1) The ball bearing suspension in your Brookeld instrument is noted on the serial tag on

the back of the head by the letter "B" after the mode.

2) When attaching and detaching the spindle, it is not necessary to lift the coupling wherethe spindle connects to the instrument.

3) The Oscillation Check explained in the Appendix J - Fault Diagnosis and Troubleshooting

does not pertain to this instrument.

Electrical Certication:This product has been certied to the applicable CSA and ANSI/UL Standards, for use in

Canada and the U.S. (cCSAus).

Installation Category II, Pollution Degree 2, Altitude 2000m (max).

NOTICE TO CUSTOMERS:

This symbol indicates that this product is to be recycled at an appropriate collection center.

Users within the European Union:Please contact your dealer or the local authorities in charge of waste management on how todispose of this product properly. All Brookeld ofces and our network of representativesand dealers can be found on our web site: www.brookeldengineering.com

Users outside of the European Union:Please dispose of this product according to your local laws.


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I.8 Safety Symbols and Precautions

Safety Symbols

The following explains safety symbols which may be found in this operating manual.

Indicates hazardous voltages may be present.

Refer to the manual for specic warning or caution information to avoid personal injury

or damage to the instrument.

Precautions

If this instrument is used in a manner not specied 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 cordfrom the wall outlet.

The user should ensure that the substances placed under test do not release poisonous,

toxic or ammable gases at the temperatures which they are subjected to during the

testing.

Instrument intended for indoor use only.

I.9 Data Retention

The DV-III Ultra will save spindle parameters (used to calculate centipoise, shear rate and shearstress), default settings and the test data from the last program test run when the rheometer is turnedoff or there is a power failure.

I.10 Set-Up

Note: "IQ,OQ,PQ", a guideline document for installation, operation andperformance validation for your DV-III Ultra Rheometer, can be

downloaded from our website: www.brookeldengineering.com


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1) Place the upright rod into the hole at the front of the base. The rack gear and clamp assemblyshould face the rear of the base (see FigureI-4). The upright rod (item #1) is held in placewith the jam nut (item #4) which is attached from the bottom of the base. Tighten this nutwith a suitable wrench (spanner).

CLAMP ASSEMBLY

NOTE: FRONT FACES TOWARD YOU.

DV-III Ultra

HEAD UNIT

TENSION SCREW

2

1

3

4

5

Figure I-4


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Bubble Level

Rack Gear

Clamp Assembly

Clamp Screw

Upright Rod

Mounting Handle

Figure I-5

2) Insert the mounting handle on the back of the DV-III Ultra into the hole on the clamp assembly(SEEFigureI-5).

3) Tighten the DV-III Ultra clamp Screw (SEEFigureI-5).

Note: If the clamp assembly moves along the upright rod to freely, tighten thetension screw (See Appendix G)

4) Insert the ribbon cable into the DV-III Ultra Rheometer head. Insert the other end of theribbon cable into the connector on the DV-III Ultra base (seeFigureI-6).

5) Connect the RTD probe to the socket on the back side of the DV-III Ultra Rheometer (seeFigure I-6).

6) The Rheometer must be leveled before the instrument is zeroed and readings are taken. Thelevel is adjusted using the three leveling screws on the base. Adjust so that the bubble level

on top of the DV-III Ultra (seeFigureI-5) is centered within the circle.

7) Remove the grey shipping cap which secures the lower coupling nut on the Rheometer to thepivot cup

Note: Check level periodically during use

8) Make sure that the AC power switch at the rear of the base unit is in the OFF position. Connectthe AC plug to the socket on the back of the DV-III Ultra base and plug it into the appropriateAC line. Allow at least 10 minutes for warm up; 30 minutes is preferable.


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ANALOG OUTPUT STORQUE 0-1V TEMP 10MV/ CoMODEL DV-III ULTRA BASE UNIT Rev. B-EARTH GROUNDING REQUIRE D-

F/250V 2A

FUSE RATINGS

US B P ARALLEL PRINTE R R HEOMETER UNIT SERIAL I/OPRINTER OR COMPUTE R

90-260VAC 50/60Hz 220VAELECTRIC RATINGS (AUTORANGING)

11COMMERCE BLVD.

MIDDLEBORO ,MA 02346U.S.A.

Rheometer Head

RTD TemperatureProbe Connector

Power ON/OFF Switch

AC Fuse(s)

AC Power Connector

Connector Connector

Parallel Printer Ribbon Cable

ConnectorUSB Cable

Ribbon Cable

ConnectorRS-232 SerialPrinter/ComputerAnalog Output(s)

Adjustment Knob

Figure I-6

The DV-III Ultra must be earth grounded to ensure against electronic failure!!

9) Temperature monitoring is assured (after the instrument has stabilized) to within 1.0C inthe range -100C to +150C and within 2C in the range 150C to 300C.

10) For Cone/Plate models refer to Appendix A.

11) For printers, software and temperature controllers, refer to Section I.11, Connections.


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I.11 Connections

The DV-III Ultra Rheometer is capable of communicating with several external devices to enhanceoperation. The cables and connections required for proper communication are detailed below.

SRHEOLOADER

The DVP-202 USB Cable is used to connect the USB Port on the DV-III Ultra Base to the computer.

The DVP-80 cable is used to connect the RS-232 serial port on the DV-III Ultra base to Com Port1 or Com Port 2 on the computer. Some PCs may also have Com Port 3 and Com Port 4. Thesecables are supplied with the DV-III Ultra.

SRHEOLOADER AND EZ-YIELD SOFTWARE

The DVP-80 cable is used to connect the RS-232 serial port on the DV-III Ultra base to Com Port1 or Com Port 2 on the computer. Some PCs may also have Com Port 3 and Com Port 4. Thiscable is supplied with the DV-III Ultra.

SRHEOCALC SOFTWARE

The DVP-202 USB Cable is used to connect the USB Port on the DV-III Ultra Base to the computer.

The DVP-80 cable is used to connect the RS-232 serial port on the DV-III Ultra base to Com Port1 or Com Port 2 on the computer. Both cables are supplied with the RHEOCALC software.

SPARALLEL PRINTER

The CAP-86 cable is used to connect the 25-pin parallel port on the DV-III Ultra base with theCentronicsport on the printer.

SSERIAL PRINTER

The DVP-81 cable is used to connect the 9-pin serial port on the DV-III Ultra with the 25-pin serial

port on a printer.

STHERMOSEL CONTROLLER AND TC SERIES TEMPERATURE BATHS

Earlier model baths with programmable Brookeld Controllers will also work.

The DVP-141 cable is used to connect the serial port on the DV-III Ultra base to the serial port onthe controller. This cable is supplied with the controller/bath.

Be sure that the controller temperature probe is properly located in the control device (Thermoselor bath) and connected to the controller.

Note: 1. The controller may alternately communicate with Rheocalc V.2.0 orhigher software. In this conguration, the controller is connected to thecomputer through either Com Port 1 or Com Port 2 by using the DVP-80cable. The DV-III Ultra can also be connected to a computer throughthe USB Port by using the DVP-202 cable.

2. The controller must also be connected to the control device (Thermosel

or bath) with the appropriate load cable.


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SSTRIP CHART RECORDER

DVP-96Y cable is used to connect the serial port on the DV-III Ultra to the input block of the stripchart recorder. This cable is supplied with a Brookeld strip chart recorder.

I.12 Key Functions

FigureI-7 shows the control keys on the face of the DV-III Ultra Rheometer. The following describeseach keys function.

OPTION

TAB

ENTER

YES NO

SELECT

DISP PRINT

1

7 8 9

4 5 6

32

0.

SELECT

SPDL

PROG

RUN

MOTOR

ON/OFF

ESCAPE

PROG

AUTO

RANGE

Figure I-7

MOTORON/OFF

ESCAPE

MOTOR ON/OFF, ESCAPE

Turns the motor on or off. Cancels any operation. Returns the user to the previous screen.

AUTO

RANGE

AUTORANGE

Presents the maximum (100% torque) viscosity attainable using the selected spindle atthe current speed.

SELECT

SPDL

SELECT SPDL

Allows selection of the spindle to be used.

SELECT

DISP

SELECT DISP

Selects the parameter to be displayed:

% Rheometer Torque (%) cP Viscosity (cP or mPa.s) SS Shear Stress (Dynes/cm2 or Newtons/m2) SR Shear Rate (1/Sec)


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OPTION

TAB F

OPTION, TAB

Accesses options menu (see Section V). Toggles between selectable items when indicated.

PRINT

PRINT

Sends a single line of data to an attached printer. Selects printing and non-printing mode asselected in the Options menu.

PROG PROG Access the Programs menu for program creation, running or deleting. Constructs a test program.

Allows you to review/modify an existing test program. Execute a Bevis program.

PROG

RUN

PROG RUN

Execute DV-III Ultra speed/time pair program.

NUMBER KEYS (0 through 9) 0 Sets speeds and choose items from various dialog screens and the option menu.

ENTERENTER

Functions as an ENTER key similar to a computer by serving to accept a keyboard entry.

I.13 Cleaning

Make sure the instrument is in a decent working environment (dust-free, moderatetemperature, low humidity, etc).

Make sure the instrument is on a level surface.

Hands/ngers must be clean and free of residual sample. Not doing so may result indeposit build-up on the upper part of the shaft and cause interferences between theshaft and the pivot cup.

Be sure to remove the spindle from the instrument prior to cleaning. Severeinstrument damage may result if the spindle is cleaned in place.

Instrument and Keypad: Clean with a dry, non-abrasive cloth. Do not use solventsor cleaners.

Immersed Components (spindles): Spindles are made of stainless steel. Clean with anon-abrasive cloth and solvent appropriate for samplematerial.

When cleaning, do not apply excessive force which may result in bending thespindles.


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II. GETTING STARTED

II.1 Autozero

Before readings may be taken, the Rheometer must be auto zeroed. This is done each time thepower switch is turned on. The Rheometer will guide you through the procedure, as follows:

Turn power switch on; as shown inFigureII-1, the screen indicates that the DV-III Ultra is in thestandalone mode (is not connected to a computer) and gives the version of the operating rmware(the built in program which controls the instrument) and a two-digit alphanumeric code whichindicates the Model number (see Table D2 in Appendix D; the code tells the spring torque ratingof your Rheometer).

BROOKFIELD

DV-III ULTRA RHEOMETER

V1.0 HA

STANDALONE

Figure II-1

No key press is necessary. After a short pause the display will read REMOVE SPINDLE, LEVELRHEOMETER AND PRESS THE MOTOR ON/OFF KEY TO AUTOZERO. Before beginning the autozeroprocedure, Brookeld recommends that you allow 10 minutes for the instrument to warm up.

After pressing the MOTOR ON/OFFkey, the screen ashes for approximately 15 seconds whilethe DV-III Ultra auto zeros.

After 15 seconds the display reads AUTOZERO IS COMPLETE REPLACE SPINDLE AND PRESS ANYKEY. Press akey.

The main screen is displayed and the DV-III Ultra is ready for use (FigureII-2).

RPM: 0.0 SPINDLE: 31

TEMP: 72.1 F PRTN

TORQUE = 0.0 %

Figure II-2

II.2 Rheometer Display

The DV-III Ultra Rheometer is supplied with a 4-line display. The basic set of information is called"The Default Screen" and is shown inFigureII-3. The parameters are detailed below:


TEMP: 72.1F PRTN

TORQUE = 0.0 %

Figure II-3


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1. Motor Status and Current Rheometer Speed The DV-III Ultra motor can be OFF, ON at 0.0 rpm or ON at a speed greater than 0.0 rpm.

When the motor is OFF, "OFF" will be displayed and no speed entry will be accepted. Whenthe motor is ON, the actual speed of rotation will be displayed. When the motor is switchedfrom ON to OFF, the speed of rotation will be remembered; when the motor is turned ONagain, the DV-III Ultra will operate at that same speed. The rheometer motor is set to "OFF"after AUTOZERO.

Note: Motor OFF and a speed setting of 0.0 are essentially the same.

2. Spindle Number The currently-selected spindle. Viscosity, shear rate, and shear stress values will be calculated

based on this number. See Section II.3.

3. Measured Temperature The current temperature as measured by the attached temperature probe. If no probe is

connected, four dashes "----" will be displayed.

4. Printing Status Indicates the currently-selected method of printing.

5. Measured Data Instrument Torque (%), Viscosity (cP), Shear Stress (D/cm2), Shear Rate (s-1) The parameters are toggled from one to another using the Select Display key.

Note: Shear Stress and Shear Rate data cannot be calculated for some spindlegeometries. In these cases, the display will show 0.0.

6. Blank Line

This line is used to display entry data when selecting a spindle or speed of rotation. Additionally,selected programs available for running will be identied here when in the Program mode.(See Section IV.2).

The default screen will appear at the completion of the AUTOZERO sequence each time the DV-IIIUltra is turned ON in the standalone mode (see Section II.5: External Control). The displayed datamay be changed as described in the following sections.

The format for data displayed in the default screen and all other screens is described in Table 11.1.For appearance sake, the entries in the table have been decimal point aligned. Actual rheometerdisplay will have all elds left justied.


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ITEM PRINT FORMAT RANGE EXAMPLE

RPM RPM X.XX

XX.X

XXX.X

0.01


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RPM: 112 SPINDLE: 31

TEMP: 72.1F PRTN

VISC = 900@6 CPS

Figure II-5

STORQUE LESS THAN 0% When Rheometer torque drops below zero (0) percent, the Rheometer will continueto displaytorque values preceded by a minus (-) sign. The viscosity and shear stress eld will display dashes

(- - - - ) as indicated inFigureII-6:


TEMP: 72.1F PRTN

S STR = ----- D/CM2

Figure II-6

II.3 Spindle Entry

The user can elect to change the spindle selection by pressing the SELECT SPDLkey. The DV-IIIUltra control program will use the previously blank line 3 on the default display screen to recordthe new spindle input as depicted inFigureII-7.


TEMP: 72.1F PRTN

ENTER SPINDLE # 31

TORQUE = 0.0%

Figure II-7

To enter a spindle number, press the numeric keys until the desired spindle number has been entered.Valid spindle numbers encompass the range from 00 to 99 as listed in Appendix D. Mistakes arecorrected by repeatedly pressing the numeric keys until the proper spindle value has been entered.At that point, the user presses the SELECT SPDLkey again. An invalid spindle entry will result in a

beep and the display of the data entry error screen as shown inFigureII-8.

INVALID DATA ENTRY

"BADSPINDLE"

** RE-ENTER **

Figure II-8

An invalid spindle entry is any two digit number in the range from 01 to 99 which is not listed inAppendix D. This error message will be displayed for a few seconds after which the spindle entryscreen (seeFigureII-7) will be re-displayed with a blank eld for the spindle number. The usercan cancel spindle entry at any time by pressing the MOTOR ON/OFF/ESCAPEkey.

To enter a new spindle into memory, use the following procedures.

Press and Hold the motor on/off and 9 key on power up. The screen inFigureII-9 appears.


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SPECIAL SPINDLE #2

NAME = D BB E

SMC = 1.000

SRC = 2.000

Figure II-14

To complete, enter 0 values for SMC and SRC.The display may ask ADD A SPINDLE. You may press YES to repeat or NO to nish.

ADD A SPINDLE?

1 = YES 3 = NO

Figure II-15

If you press 3 NO, the display will ask SAVE NEW SPINDLE? Press the 1 YES to save orpress 3 NO.

SAVE NEW SPINDLES?

1 = YES 3 = NO

Figure II-16

The display will now say SET UP COMPLETE, turn power off.

You can edit any existing spindle entry names and spindle constants. If so, you will need to completethe steps until you are prompted to Save New Spindle. For example, if you have three specialspindles entered and need to modify the second spindle, you will need to proceed through the third

spindle parameters by pressing Enter until prompted to Save New Spindle. This will then savethe modied spindle.

II.4 Direct Speed Entry

At this point, the user may choose to enter a speed by the so-called direct speed entry method.Enter a valid speed in the range of 0.01to 250RPMby pressing the numeric keys successively.The previously blank line 3 on the default display screen records the users new speed input asdepicted inFigureII-17:


TEMP: 72.1F PRTN

ENTER NEW RPM: 11_

TORQUE = 0.0 %

Figure II-17

Here, the user intends to enter a speed of 112 RPM, has pressed the 1 key twice and is aboutto press the 2 key. If the user makes more than ve (5) key presses, the DV-III Ultracontrolprogram will roll the cursor back to the rst character of the eld and begin to overwrite theprevious data entry.

Next the user presses the ENTER key to accept the speed. The motor will begin running at 112 RPM


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and the display will be updated to the next screen image:


TEMP: 72.1F PRTN

TORQUE = 56.3 %

Figure II-18

If the speed entered was not valid the Rheometer will display the following message:

INVALID DATA ENTRY

"BADSPEED/TIME"

** RE-ENTER **

Figure II-19

After a few seconds, the display returns toFigureII-17 with the speed data eld cleared and justthe underscore cursor awaiting a new entry.

II.5 External Control

The DV-III Ultra Rheometer can be used in conjunction with Brookeld software, RHEOCALC(V. 2. or higher). Through RHEOCALC, all rheometer functions are controlled by the computer.The DV-III Ultra must be set to the external control mode to allow for proper communication withRHEOCALC. To congure the external control mode, connect computer interface cable DVP-80(RS-232) or DVP-202 (USB) to the port on the DV-III Ultra base beforeturning on the DV-IIIUltra. With the DVP-80 cable in place, the DV-III Ultra will present the screen shown inFigure

II-20 when it is turned on. If external control is selected, the DV-III Ultra will displayFigureII-21and only accept control commands from RHEOCALC software.

BROOKFIELD


1 = EXTERNAL CONTROL

2 = STANDALONE MODE

Figure II-20

BROOKFIELD


V0.0 HA

EXTERNAL

Figure II-21

The DV-III Ultra may be set to stand alone mode by turning it OFF and ON again and selecting"Stand Alone" or by removing the cable (DVP-80 or DVP-202) prior to turning the DV-III Ultraon.

Note: The DV-III Ultra cannot communicate with RHEOLOADER or EZ-Yield software in the external control mode. Choose "Stand Alone"when presented withFigure II-20if you want to use RHEOLOADERor EZ-YIELD.


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II.6 Preventative Maintenance

The DV-III Ultra does not require any internal maintenance or adjustment. Periodic verificationof calibration is an important procedure. We recommend that you check the calibration ofyour DV-III Ultra on a regular basis. The frequency of calibration checks should be set basedon your use of the instrument and the significance of the data. We generally recommenda frequency of 1 month. See Appendix E - Calibration Check Procedure for information on

performing a calibration check.

Any condition that results in an out of calibration result (see Interpretation of CalibrationResults at the end of Appendix E) must be corrected by Brookfield or our authorized dealers.Please check our web site for information on our dealers and a Laboratory Return Form;www.brookfieldengineering.com.

Preventative maintenance for the DV-III Ultra consists primarily of good practice whenusing the instrument. Please follow the suggestions below.

Long term storage: When the DV-III Ultra will be out of service for an extended periodof time, use the Instrument Carrying Case in which it was supplied. Be sure to install

the shipping cap.

When the unit is not in use, place it on the back of the laboratory bench out of theway of normal activity.

Be sure that the unit is properly leveled for all measurements (Section I.10; Step 6).

Periodically check the Tension Screw on the Clamp Assembly of the Upright RodAssembly (Appendix G). This screw should be tight enough to prevent the unit frommoving down the rod spontaneously but not so tight as to prevent the operatorfrom moving the unit with the adjustment knob.

Keep hands free from test materials to prevent transfer of material to surfaces ofthe unit.

Keep the bottom of the unit housing clean from test samples and debris. The pivotcup and spindle connection should be clean and free of any material. This will ensureproper connection of the spindle to the unit and proper rotation of the spindle(minimize run out).

Properly clean spindles and sample chambers (optional) after each measurement.Remove the spindle from the unit prior to cleaning, not doing so may result in thespindle being bent. Use cleaning solvents that are compatible with 300 seriesstainless steel. Do not use abrasive cloths.

Clean keypad and display screen with a soft dry cloth. Do not use harsh solvents orabrasive materials.

Clean instrument surfaces with a soft dry cloth. Solvents may remove factorypaint.

Wells/Brookfield cone spindles should be handled carefully to prevent scratches tothe measurement surface and nicks on the outer radius. Do not drop the spindleon the lab bench or floor. We recommend placing a rubber mat in the areas aroundthe DV-III Ultra when these spindles are in use.


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Wells/Brookfield sample cups should be handled carefully to prevent scratches ornicks. Do not use abrasive cleaners or cloths.

Store all spindles in the protective case in which they were supplied.

Do not store spindles attached to the unit.

Periodically inspect all cables for proper connection and damage.


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III. MAKING VISCOSITY AND YEILD MEASUREMENTS

III.1 Quick Start

Viscosity Measurement

The DV-III Ultra Rheometer uses the same methodology for viscosity measurement as the BrookeldDial Reading Viscometer and DV series of Digital Viscometers. If you have experience with otherBrookeld equipment, this section will give you the quick steps for taking a viscosity reading. Ifyou have not used a Brookeld Viscometer before, skip this section and go to Section III.2 for adetailed description.

A) Assemble and level the rheometer (Section I.10).

B) Turn power on. Select 2 = STANDALONE MODE.

C) Autozero the rheometer (Section II.1).

D) Enter the spindle number using the SELECT SPINDLE key (Section II.3).

E) Introduce the spindle into the sample and attach the spindle to the coupling nut. NOTE: Left-hand threads.

F) Enter the speed of rotation using the number pad and ENTER key (Section II.4).

G) Record % torque and viscosity.

Yield Measurement

The DV-III Ultra Rheometer uses the same methodology for yield measurement as the BrookeldYR-1 Rheometer. If you have experience with the YR-1, this section will give you the quick stepsfor taking a yield stress reading. If you have not used a Brookeld Viscometer before, skip thissection and go to Section IV.8 for a detailed description.

A) Assemble and level the rheometer (Section I.10).

B) Turn power on. Select 2 = STANDALONE MODE.

C) Autozero the rheometer (Section II.1).

D) Press the PROG key on the rheometer keypad. The rheometer will display the PROGRAMMODES screen as shown in Figure II.20. Press the 4 key to access the Yield Program.

E) Start the EZ-Yield software program on your PC. In the upper right corner of the main screen,set the instrument setting to DV-III ULTRA and the COM port setting to the appropriatecom port.

F) Click on the Test Parameters tab beneath the toolbar on your PC screen. Insert values forthe EZ-Yield test parameters as explained in Section I.3 and save the le if required for futureuse.

G) Click the download button on the toolbar on your PC screen. The screen on the rheometerwill show DOWNLOAD COMPLETE, PRESS ANY KEY.


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H) Press the ENTER button on the rheometer to run the test. The screen will then show USESPINDLE #__. Conrm that the correct spindle is attached to the rheometer and that thesample is properly prepared and in position to begin the test. Press the ENTER button to startthe test.

I) After a few seconds, your PC will automatically show the Graphs page in the EZ-Yield softwareprogram, indicating that the test has begun. The DV-III Ultra will send data to the PC and the

graph of the yield stress ow behavior will be captured. The Data page in the software willrecord the actual numerical values for shear stress.

J) When the test is complete, a dialog box appears asking you to save the data that was justacquired.

K) Subsequent tests can be started by either pushing the ENTER button on the DV-III Ultra orby clicking the RUN button in the EZ-Yield software.

III.2 Preparations for Making Measurements

A) RHEOMETER: The DV-III Ultra should be turned on, leveled and auto zeroed. The level is

adjusted using the three feet on the bottom of the base and conrmed using the bubble on thetop of the head. Adjust the feet until bubble is inside the center target. Set the level prior toautozero and check the level prior to each measurement.

Proper level is essential for correct operation of the DV-III Ultra.

B) SAMPLE: The uid to be measured (sample) must be in a container. The standard spindlessupplied with the DV-III Ultra (LV (1-4), RV (2-7), or HA/HB (2-7)) are designed to be usedwith a 600 ml low form Grifn beaker (or equivalent container with a diameter of 8.25cm).The same applies to the optional RV1, HA/HB1, and Vane spindles. Many other spindlesystems are supplied from Brookeld with specic sample chambers such as the Small SampleAdapter, UL Adapter and Thermosel.

Brookeld recommends that you use the appropriate container for the selected spindle. Youmay choose to use an alternate container for convenience, however, this may have an effecton the measured viscosity. The DV-III Ultra is calibrated considering the specied container.Alternate containers will provide results that are repeatable but not "true."

The LV (1-4) and RV (1-7) are designed to be used with the guardleg attached (see AppendixF). Measurements made without the guardleg will provide repeatable results but may notprovide "true" results.

When comparing data with others, be sure to specify the sample container and presence/absence of the guardleg.

Many samples must be controlled to a specic temperature for viscosity measurement. Whenconditioning a sample for temperature, be sure to temperature control the container and spindleas well as the sample.

Please see our publication, "More Solutions to Sticky Problems", for more detail relating tosample preparation.

C) SPINDLE ATTACHMENT: The method of spindle connection to the DV-III Ultra is speciedat the time of order as either Standard Threaded Shaft or EZ-Lock. The spindle connectionmethod may be changed by sending the DV-III Ultra to Brookeld or our authorized agents.There is an adapter available to convert Standard Threaded Spindles to EZ-Lock Spindles. Itis not possible to use EZ-Lock Spindles on a Standard Threaded Unit.


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Note: If you are using an accessory device such as a Small Sample Adapter,the complete kit must be congured for the EZ-Lock Unit to ensure

proper alignment and spindle immersion. Contact Brookeld for more

information.

Figures III-1a and III-1b shows the method for both connection systems.

Figure III-1a: EZ-Lock Figure III-1b: Standard Spindle

Standard Threaded Shaft

The spindles are attached to the viscometer by screwing them onto the lower shaft. Note that the

spindles have a left-handed thread. The lower shaft should be secured and slightly lifted with one

hand while screwing the spindle to the left. The face of the spindle nut and the matching surface

on the lower shaft should be smooth and clean to prevent eccentric rotation of the spindle. Spindles

can be identied by the number on the side of the spindle coupling nut.

EZ-Lock

Hold the spindle with one hand while gently raising the spring-loaded outer sleeve to its highest

position with the other hand. Insert the EZ-Lock Spindle Coupling so that the bottom of the coupling

is ush with the bottom of the sleeve, and lower the sleeve. The sleeve should easily slide back

down to hold the spindle/coupling assembly in place for use. [Spindles can be identied by entry

code; look for the number on the side of the EZ-Lock spindle coupling.]


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III.3 Selecting a Spindle/Speed

The DV-III Ultra has the capability of measuring viscosity over an extremely wide range (for example,the RVDV-III Ultra can measure uids within the range of 100-40,000,000 cP) (see Appendix B).This range is achieved through the use of several spindles over many speeds. When measuringyield stress with vane spindles, a broad measurement range is also possible through the choice ofmultiple spindles.

The process of selecting a spindle and speed for an unknown uid is normally trial and error. Anappropriate selection will result in measurements made between 10-100 on the instrument %torque scale. Two general rules will help in the trial and error process.

1) Viscosity range is inversely proportional to the size of the spindle. 2) Viscosity range is inversely proportional to the rotational speed.

In other words: to measure high viscosity, choose a small spindle and/or a slow speed. If the chosenspindle/speed results in a reading above 100%, then reduce the speed or choose a smaller spindle.

Experimentation may reveal that several spindle/speed combinations will produce satisfactory results

between 10-100%. When this circumstance occurs, any of the spindles may be selected.Non-Newtonian uid behavior can result in the measured viscosity and yield stress changing if thespindle and/or speed is changed. See our publication, "More Solutions to Sticky Problems," formore detail.

When viscosity and/or yield stress data must be compared, be sure to use the same testmethodology: namely the same instrument, spindle, speed, container, temperature and testtime.

III.4 Multiple Data Points

The majority of viscosity and yield stress measurements are made at the quality control level andoften consist of a single data point. The test is conducted with one spindle at one speed. The datapoint is a useful bench mark for the go/no-go decision in a production setting. The DV-III Ultracan be used for single point measurement.

Many uids exhibit a characteristic change in viscosity and yield stress with a change in appliedforce. This non-Newtonian ow behavior is commonly seen in paints, coatings and food productsas a decrease in viscosity as shear rate increases or an increase in yield stress as rotational speedincreases. This behavior cannot be detected or evaluated with the single point measurement.

Non-Newtonian ow is analyzed through the collection of viscosity data over a range of shearrates and the generation of a graph of viscosity versus shear rate (a rheogram). The same applies toyield stress determination by analyzing torque vs. time behavior at different rotational speeds. This

information will allow for a more complete characterization of a uid and may help in formulatingand production of the product. The DV-III Ultra is capable of collecting multiple data points forcomprehensive analysis of ow behavior. See Section IV on Programming and Analysis.

More information on ow behavior, shear rate and rheograms is available in our publication, "MoreSolutions to Sticky Problems."


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IV. PROGRAMMING THE DV-III ULTRA AND DATA COLLECTION

METHODS/ANALYSIS

The programming and data analysis functions of the DV-III Ultra are accessed by pressing thePROG key on the rheometer. The display will change to present a menu with four choices: DV-III, B.E.V.I.S., Models and Yield as shown in Figure IV-1. DV-III, B.E.V.I.S. and Yield are theprogramming alternatives. Models will present the ve math models available for viscosity dataanalysis (see IV.7 for more details about Math Models).

PROGRAM MODES

1 = DVIII 3 = MODELS

2 = BEVIS 4 = YIELD

SELECT:_

Figure IV-1

IV.1 Programming Concepts

The DV-III Ultra may be programmed to collect viscosity or yield data without operator involvement.The captured data may be displayed and analyzed or output to a printer. Programs may be writtenusing three different methodologies: DV-III, B.E.V.I.S and Yield.

The DV-III Ultra programming technique uses speed/time pairs, when making viscosity measurements,to control the DV-III Ultra. A program consists of multiple lines (up to 25) instructing the rheometerto operate at a particular speed for some period of time. As an example, we can instruct the DV-IIIUltra to rotate the spindle at 5 RPM for 30 seconds and then change speed to 10 RPM and wait 20seconds with the following program:

Step 1 RPM = 5 Time = 00:30

Step 2 RPM = 10 Time = 00:20

A single data point will be collected at the end of each time interval. Complete details on thisprogramming technique are in Section IV.2.

The B.E.V.I.S. programming technique uses a custom program language to control the DV-III Ultra.A program consists of a series of commands instructing the rheometer in speed control, time control,data collection, temperature control, and output. B.E.V.I.S. offers a higher level of rheometer controlcompared to the DV-III method. However, the construction of B.E.V.I.S programs is more involved.The 2-step DV-III program previously described is duplicated using B.E.V.I.S. commands below:

SSN 5 WTI 00:30

PDN

SSN 10

WTI 00:20 PDN

END

The involved programming of B.E.V.I.S. commands is a small trade-off for the signicant increasein control capability over the DV-III method. Complete details on this programming technique arein Section IV.3.

The yield programming technique uses three control parameters to run yield tests on the DV-IIIUltra: speed control, time control and torque change between successive data points. Complete

details on this programming technique are in Section IV.


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IV.2 DV-III Speed/Time Pair Programs for Making Viscosity Measurements

This programming method allows the operator to control the DV-III Ultra through the variables ofspeed and time. These speed/time pairs instruct the rheometer to operate at a speed of rotation fora certain period of time. Programs can be created with up to 25 steps. The DV-III Ultra can storeup to 10 programs. Upon completion of a program, the data may be viewed on the DV-III Ultradisplay, analyzed or printed to an attached parallel or serial printer.

Two examples of programs are shown below:

Collect Data Over Time Collect Data At Several Speeds

Step RPM Time Step RPM Time 1 100 00:12 1 2.5 01:00 2 100 00:12 2 5 00:30 3 100 00:12 3 10 00:30 4 100 00:12 4 20 00:15 5 100 00:12 5 50 00:15

Five viscosity data points Five viscosity data points will be

will be collected over collected at ve speeds over one minute. 150 seconds.

This program mode is accessed by pressing the program key and selecting number 1; 1 = DV-III.The creation, editing and execution of DV-III programs are described in the following sections.

There are two types of test programs:1) Next Speed Setwhere the test speeds are programmed, and the operator must signal the DV-

III Ultra to change speeds (and therefore take a reading) by pressing the ENTERkey.

2) Prog Speed Setwhere the DV-III Ultra will perform the test automatically.

Each step of a program has two variables - speed and hold time. The reading is taken at the end of thehold time interval in a Prog Speed Set or when the ENTERkey is pressed in a Next Speed Set.

If the rst step hold time interval is 0 seconds, the program is a Next Speed Set type. If the rststep interval is 1 second or more, the program is a Prog Speed Set type.

SSPEED SET SELECTION AND PROGRAMMING

The DV-III Ultraviscometer allows for the retention of a maximum of 10speed sets with up to25discrete speeds per speed set. The program locations are numbered 0 through 9. These speed

sets are retained in EEPROM memory for those times when the DV-III Ultrais not powered up.To access a previously programmed speed set or to enter data for a new speed set, the user pressesthe 1 key when in the display ofFigureIV-1 and is presented with the screen shown inFigureIV-2:

SPEED SET OPERATIONS

1 = ENTER/EDIT A PGM

2 = CLEAR SPEED SET

3 = USE SPEED SET

Figure IV-2


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At this point, the user may Enter/Edit, Clear or Use a stored program (Speed Set). Lets start withEnter/Edit by pressing the 1 key:

SPEED SET USAGE

IN MEM: 012589

AVAIL: 3467

USE SET:_

Figure IV-3

In this example, the user is informed that he has 6 speed sets (0,1,2,5,8,9) pre-programmed inmemory and 4 speed sets (3,4,6,7) not programmed and available. Select any one of the ten speedsets by pressing the appropriate numeric key. Pressing the MOTOR ON/OFF/ESCAPE key atthis point would exit the user to the default PROGRAM MODESdisplay (FigureIV-1). Fornow lets assume that the user wants to program a new speed set by pressing the 3 key (the rstavailable program slot).

SENTERING A SPEED SET PROGRAMThere are two (2) types of programs available to the user: programs with nite step time intervalsand programs with zero (0) step time intervals. We will cover the inputting of nite step timeprograms rst.

SSPEED SETS WITH FINITE STEP TIMES PROG SPEEDThese programs when executed will automatically progress from step to step based on the timeintervals programmed by the user. On pressing the 3 key inFigureIV-3 the user is presentedwith:

NEW SPEED SET #3

STEP 01

STEP RPM = 0.0

STEP TIME = 00:05

Figure IV-4

This screen reminds the user of the speed set that he has selected to program and then allows himto change either the speed or time interval or both for that step.

Note: The time interval on entry to this screen will always be set to 00:05seconds as the default value. The user may of course change it to anyvalid time of his choice. Whenever you change time interval, that newtime becomes the default interval until it is again changed by the user.Also, note that zero (0) times are not allowed for program steps afterthe rst step for Finite Stepprograms.

The OPTION/TABkey is used for moving from input eld to input eld and the ENTER key to acceptthe current input for a step. On entry to this screen, the underscore cursor would be ashing (asshown) under the rst digit of the step RPM. Use the numeric keys to make changes to the stepspeed, repeating the input as many times as required until satised.


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When satised with the speed input, press the OPTION/TABkey which moves the ashing cursordown to the rst character of the time eld. The same procedure is used here to input the step timeas was used to enter the RPM above. Speed or time data that is out of range, as dened by TableII-1, will result in the following screen:

INVALID DATA ENTRY

"BAD SPEED/TIME"

** RE-ENTER **

Figure IV-5

This screen will be displayed for 1-3seconds.

When ready, the user may press the PROG RUNkey to display the data for the next step in theprogram, or the MOTOR ON/OFF/ESCAPEkey (whereby none of the changes up to that point will beaccepted) to return to the screen ofFigureIV-3. To end a program, the user simply enters andaccepts a step RPM and Time of zero (0) or continues to input step data until the program reachesthe twenty-ve (25) step program limit. In either case, the following screen will be displayed:

PROGRAM #3 COMPLETE1 = ENTER/EDIT A PGM

2 = CLEAR SPEED SET

3 = USE SPEED SET

Figure IV-6

To use the currently selected speed set, press the 3 key inFigureIV-6. This would immediatelyrevert to the default screen modied as follows:

RPM: 0.0 SPINDLE:

TEMP: 72.1F PRTO

SPEED SET 3 SELECTEDTORQUE = 00.0 %

Figure IV-7

Note: If at this point, prior to using the program the user wished to enter adirect speed, a press of any numeric key which would result in a displaysimilar to FigureII-17. At the completion of the direct speed input, thedisplay would revert to FigureIV-7above with the appropriate RPMdisplayed, and the viscometer running at that speed.

The program is initiated by pressing thePROG RUNkey. See "Using Pre-programmed Speeds."

SSPEED SETS WITH ZERO STEP TIMESThese programs when executed will require that the user press the ENTER key to progress from stepto step. On pressing the 3 key inFigureIV-3 the user is presented with the same screen that hesaw in the above description for nite step programs:

NEW SPEED SET #3

STEP 01

STEP RPM = 0.0

STEP TIME = 00:05

Figure IV-8


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The user inputs his step RPM exactly as he did for nite step time programs above. However,for time, input 00:00 and press the ENTER key. From this point forward, the user will only be ableto enter speeds since each press of the ENTER key will advance him to the next step. The OPTION/TABkey will not be required. If the user wishes to correct the speed input, continue to press thenumeric/decimal point keys until satised. To correct a speed after pressing the ENTER key for thatstep, wait until the program is complete and then edit the program to correct the mistake. To enda program, simply enter and accept a step RPM of zero (0) or continue to input step data until theprogram reaches the twenty-ve (25) step program limit. Speed restrictions/limits are the same as

for the description just above as are the error messages.

SEDITING A SPEED SET PROGRAMThis item is used to review a just-entered program or to review/modify (edit) a program alreadystored in a memory slot. Entry to this method would typically be fromFigureIV-3 after selectingan IN MEM program slot or by pressing the 1 key inFigureIV-2 having just nished enteringa program. In either case, the user is presented with:

REVIEW SPEED SET #3

STEP 01 OF 03

STEP RPM = 10.0

STEP TIME = 00:05Figure IV-9

Operation in this mode is exactly the same as for entering a new speed set; all key actions and speedand time limits are the same. At this point, the user may continue to review/modifythe speedscomprising speed set #3or elect to print a listing of the speeds in this speed set. To accomplishthis, the user must be in the program Enter/Edit mode; have selected or programmed a speed setwhich contains more than two (2) speeds, and then press the PRINT key. If all is well (i.e. satisedthe above requirements) the rheometer will display:

PRINT SPEED SET #3

READY PRINTER THENPRESS PRINT KEY.

Figure IV-10

This message simply asks the user to make sure the printer is ready (its on-line and has paper in it)and then awaits for the PRINTkey to be pressed. When it is pressed, the DV-III Ultrawill sendthe following data to the attached printer:

SFOR SPEED SETS WITH FINITE STEP TIMES

Program Use: _________________________________________________________

Programmer: _________________________________________________________

BROOKFIELD DV-III+ RHEOMETER DATA FOR SPEED SET #9

SPEED #01 RPM = 2.5 TIME INTERVAL = 00:05






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SFOR SPEED SETS WITH ZERO STEP TIMES

Program Use: _________________________________________________________

Programmer: _________________________________________________________

BROOKFIELD DV-III+ RHEOMETER DATA FOR SPEED SET #8

SPEED #01 RPM = 10.0 TIME INTERVAL = 00:00 SPEED #02 RPM = 20.0 TIME INTERVAL = 00:00



Since speed sets can contain twenty-ve (25) separate speeds, printing the speeds that comprise aspeed set will be of great help in allowing the user to fully exercise the power of the DV-III Ultra.After the printing is complete, the user will be returned to the display of FigureIV-9.

SCLEARING A SPEED SET FROM MEMORY

Since 10speed sets can be retained in memory, the user may eventually use all the available speedset slots. The user may also have programmed speed sets that are no longer required and wouldlike to remove. Assume that the user had programmed a new speed set #3above. If he wished topermanentlyremove that new speed set, or any other IN MEMORY speed set he would, while inthe screens ofFigureIV-2,press the 2 key and be presented with:

CLEAR SPEED SET

IN MEM:0123589

IN USE:3

CLEAR SET:_

Figure IV-11

This screen advises that there are 7speed sets in memory; speed set #3is in use and that the DV-IIIUltrais awaiting input for the speed set to delete.

Note: If no speed set is in use the word NONE will appear next to the IN USE: prompt.

At this point, the user has two options:

1. Pressing the MOTOR ON/OFF/ESCAPEkey will exit from this screen and no speed setswill be cleared. Or

2. Pressing any of the keys 0, 1, 2, 3, 5, 8, or 9 will delete that speed set.

Thus, to discard speed set #5, the user would press the 5key and be presented with:

DELETE SPEED SET 5

ARE YOU SURE?

1 = YES 3 = NO

Figure IV-12


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In which the DV-III Ultrais requesting that the user specically press the 1key in order to deletethe desired speed set.

CLEAR SPEED SET

IN MEM:012389

IN USE:3

CLEAR SET:_

Figure IV-13

Pressing the 3 key will cause the DV-III Ultra to take no action and will return the user to theCLEAR SPEEDSETopening screen,FigureIV-11. Any attempt to delete an in-use speed (3for instance) will cause the DV-III Ultra to issue a beep beep with no action being taken. Thusno active (i.e. selected for use) program can be deleted from this screen.

SUSING PREPROGRAMMED SPEEDSPressing the three (3) key fromFigureIV-2 takes the user to the speed set selection screen of FigureIV-3 where the user selects a new speed set. That done the user is sent to the default screen with:SPEED SET X SELECTED displayed on line three (3) of the screen.

The user initiates the use of programmed speeds by pressing the PROG RUNkey. If the user pressesthe PROG RUNkey with no speed set selected, the following error box will be displayed:

** ERROR **

A SPEED SET HAS NOT

BEEN SELECTED

PRESS ANY KEY

Figure IV-14

However, we will assume at this point that we have selected speed set #2 for use in the ensuingdata gathering operations. To initiate the use of this speed set (with nite step times or with zero

step times), the user presses the PROG RUNkey and is presented with a start/end step input screenas shown next:

SPEED SET #2

TOTAL STEPS = 13

START STEP: 01

END STEP: 13

Figure IV-15

If the user had not previously entered start and end steps, this screen will display 01for the start

step, and the last program step (13in this case) as the end step. The user could elect to use the entirespeed set at this point by pressing the PROG RUNkey. If the user had previously selected a start andend step, those values would be displayed upon entry to this screen instead of the program limitvalues as shown above. However, while a speed set can contain up to 25separate speeds, the usermay be in a situation where only a few contiguoussteps may be required. Therefore, this screenallows for the option of entering the range of speeds encompassed by the start step (not necessarilythe rst step) and the end step (not necessarily the last step). Pressing any numeric key at thispoint will erase the currently displayed start step and substitute the new value. The user may selecta start step less than the end step ( a so-called Up Ramp) or a start step greater than the end step( a so-called Down Ramp). Any attempt to enter a start or end speed not contained in the speedset will result in the following display:


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INVALID DATA ENTRY

"BAD STEP INPUT"

** RE-ENTER **

Figure IV-16

The ENTERkey is used to step from the start step entry to the end step entry. Repeated pressingof theENTERkey will allow the user to move back-and-forth between the start and end entries andchange them as required until the correct start and end step values have been entered. The selectedspeed set, and the start and end steps values entered, will be retained in EEProm memory for usethe next time the viscometer is powered up in the stand-alone mode. Pressing the OPTION/TABkeyat this point results in the following screen display:

LOCKOUT OPTIONS

1 = Enable Lockout

3 = Disable Lockout

Figure IV-17

SLOCKOUT OPTIONSPressing the 1 key locks out any use of the NUMERIC keys, and the PROGRAM, SELECTSPINDLE and OPTIONS/TAB keys. Pressing the 3 key would disable an existing lockoutcondition only when in the LOCKOUT OPTIONS screen, Figure IV-17. After pressing the 1 or3 keys the user would be returned to the display of Figure IV-15. From Figure IV-15 the userruns the program by pressing the PROGRAM RUN key which signies that the user is satisedwith his start and stop step values, and wishes to start running with the selected speed set. Or, hecan return to the default screen of Figure II-3 by pressing the MOTOR ON/OFF/ESCAPE key.(Note: the OPTIONS/TAB key is re-enabled at this point only to allow the user to return to theLOCKOUT OPTIONS screen). In either case, if the user has enabled the lockout mode, the topline of the default display will change as shown in Figure IV-18 below:

RPM: 0.0 LK SPDL:31TEMP: 72.1F PRTO

SPEED SET 2 SELECTED

TORQUE = 00.0 %

Figure IV-18

The LOCKOUT condition will remain in effect until the user re-starts the program mode bypressing the PROGRAM RUNkey re-initiating the steps ofFigures IV-15through IV-18above.

Once the start and end steps have been selected, the program is started by pressing the PROGRUNkey. However, if the viscometer motor was not turned on, the following message would bedisplayed:

MOTOR MUST BE TURNED

ON PRIOR TO RUNNING

PROGRAMMED SPEEDS.

Figure IV-19

At this point, the user would turn the viscometer motor on by pressing theMOTOR ON/OFF/ESCAPEkey. This will cause the viscometer to start running at the rst selected program speed.


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SUSING PROGRAMMED SPEEDS WITH A ZERO TIME INTERVAL

Assume the following:

A speed set has been selected. A subset of the speed set has notbeen selected. (i.e. we will use the entire set of speeds) The speed set included a time interval that was equal to zero minutes and zero seconds. Print mode has been set to non-continuous mode (i.e. output will be sent to the printer only

when the user presses the ENTER key).

With the above items in effect our default display screen will appear as follows after the PROGRAMsteps have been completed:

RPM:112 SPINDLE:31

TEMP:72.1F PRTN

SET 2 01-12@02 ENTER

TORQUE = 56.3 %

Figure IV-20

Or, if the user had selected the LOCKOUToption, the default screen above would appear as in

FigureIV-21below:

RPM:112 LK SPDL:31

TEMP:72.1F PRTN

SET 2 01-12@02 ENTER

TORQUE = 56.3 %

Figure IV-21

Here, the LOCKOUTmode is indicated by the revision to the top line of Figure IV-21 whereSPINDLE has been contracted to SPDL and the two-letter combo: LK is being used toindicate the LOCKOUTcondition. Please note that while TORQUEis presently being displayed,

there is nothing to prevent the user from pressing the SELECT DISPkey to change the data displayitem.

The item to note here is the message being displayed on line 3 informing the user that the program isat speed #02of the 12speeds comprising speed set #02. The DV-III Ultra will continue to operateat 112 RPMuntil the ENTER key is pressed. At that point (pressing the ENTER key), two distinctevents will occur:

1. The DV-III Ultrawill ramp up (or down) to programmed speed #03and,2. Since the printer is On (PRNT), the data corresponding to the last speed (112 RPM) that

existed at the time the ENTER key was pressed will be sent to the attached printer.

Thus, if 12speeds comprised the selected speed set, then the user would be required to press the

ENTERkey 12times to exercise the entire speed set. After the last speed has been executed (i.e.the user pressed the ENTER key for the twelfth time), the viscometer speed will be set at ZERORPMand the following message will be displayed:

PROGRAM COMPLETE

PRESS EITHER

ENTER OR PROGRAM RUN

Figure IV-22


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Pressing the ENTER key would return the user to the default screen, as depicted inFigureIV-21,orto the program start and stop limit selections ofFigureIV-15if the PROG RUNkey is pressed.

SUSING PROGRAMMED SPEEDS WITH A NONZERO TIME INTERVAL

Assume the following: A speed set has been selected.

A subset of the speed set has notbeen selected. (i.e. well use all of the speeds in the speedset)

The speed set included a time interval that was greater than zero (0) minutes and zero (0)

seconds.

Print mode has been set to non-continuous mode (i.e. output will be sent to the printer only

when the user presses the ENTER key).

With the above items in effect our default display screen will appear as follows after the programsteps have been completed:

RPM:112 LK SPDL:31

TEMP:72.1F PRTN

SET 2 01-12@02 PROG

TORQUE = 56.3 %

Figure IV-23

The difference between this mode and the zero time interval mode is reected in the message beingdisplayed on line three of the display where PROGhas replaced ENTER indicating that the programwill be executed step-by-step without user intervention. Here the user is again informed that he isat speed #02of the 12speeds comprising speed set #02. As the programmed time interval elapses,the following will occur:

The DV-III Ultrawill ramp up (or down) to programmed speed #03and,

The data corresponding to the last speed (speed #02) that existed at the moment the steptimeelapsed will be sent to the printer since the printer is ON (PRTN) (The automatic

ramping to the next speed will be interpreted by the DV-III Ultra as if the ENTER keyhad been pressed, causing the printer output).

At the completion of the speed set, the viscometer speed will be set at ZERO RPM

After the last speed has been executed, the viscometer speed will be set at ZERO RPMand thefollowing message will be displayed:

PROGRAM COMPLETE

PRESS EITHER

ENTER OR PROGRAM RUN

Figure IV-24

Pressing the ENTER key would return the user to the default screen, as depicted in its general forminFigure IV-23, or to the program start and stop limit selections ofFigureIV-15 if the PROG RUNkey is pressed.


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Had the user selected a subset of a speed set (FigureIV-15),say speeds #04through #08, then theprogrammed mode (with a non-zero time interval) would result in the following display:

RPM:112 LK SPDL:31

TEMP:72.1F PRTN

SET 2 04-08@04 PROG

TORQUE = 56.3 %

Figure IV-25

Here, the user is informed that speed set #2 is being used starting with speed number four andending at speed #08while currently executing speed #04. After the rst speed (number #04) iscompleted, the display would be updated to show the new speed and the step display would nowreect the current executing step number as inFigureIV-26 below.

RPM:120 SPINDLE:31

TEMP:72.1C PRTO

SET 2 04-08 @05 PROG

TORQUE = 72.8 %

Figure IV-26

If the speed set contained notime interval, the selection of a subset of speeds would result in ascreen display as shown inFigureIV-27.

RPM:112 LK SPDL:31

TEMP:72.1F PRTN

SUB 2 04-08@04 ENTER

TORQUE = 56.3 %

Figure IV-27

The step number would be incremented each time the user pressed the ENTER key. Assume that thespeed corresponding to step #04was executing. If the user presses the ENTER key, our display willbe updated as shown inFigure IV-28.

RPM:120 LK SPDL:31

TEMP:72.1F PRTN

SUB 2 04-08@05 ENTER

TORQUE = 72.8 %

Figure IV-28

SPROGRAMMED SPEED STOP

The user may stop program mode operation at any time by pressing the MOTOR ON/OFF/ESCAPE keyanytime during program operation. The following message would be displayed:

PROGRAM STOPPED

PRESS ANY KEY

Figure IV-29


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The viscometer motor would be automatically turned OFFand the default screen display (FigureIV-18) would show zero (0.0) RPM. At this point, the user may perform any valid viscometer operation- load a new speed set; run a direct speed; set alarms or even re-startthe current program.

SPROGRAMMED SPEED HOLD

The user may interrupt program mode operation at any time by pressing the PROG key duringprogram execution. The following message would be displayed:

PROGRAM HOLD

1 = CONTINUE PROGRAM

3 = STOP PROGRAM

Figure IV-30

The viscometer motor would be automatically turned OFFand the DV-III+would be awaiting userkey input. If the user presses the 1 key, the DV-III Ultrawill continue executing the currentprogram, picking up from whichever RPM (and time, if applicable) it had been interrupted.However, if the user had pressed the 3 key, operation would be identical to that described abovefor Programmed Speed Stop mode.

IV.3 Bevis Programs for Making Viscosity Measurements

The B.E.V.I.S. Programming Method allows the operator to control the DV-III Ultra through thevariables of speed, temperature and time while providing for independent data collection. Programscan include up to 25 commands with a maximum data count of 800. The DV-III Ultra can storeup to 10 programs. Upon completion of the program the data may be viewed on the DV-III Ultradisplay, analyzed or printed to an attached parallel or serial printer.

B.E.V.I.S. programs are created on a PC using Rheoloader software (supplied with the DV-III

Ultra). The programs are "loaded" onto the DV-III Ultra. Loaded programs cannot be deleted,but can be overwritten.

IV.3.1 Setting Up B.E.V.I.S. Programs

B.E.V.I.S. (Brookeld Engineering Viscometers Instruction Set) is a scripting language developedat Brookeld Engineering Laboratories that allows for the creation of exible programs to controlour line of Rheometers. In the case of the DV-III Ultra Rheometer, programs are created then loadedinto the Rheometer using the RheoLoader software.

Some features of the scripting language are:

Repeatedly run the same program for quality control purposes.

Wait for a prevailing condition before continuing with the program (i.e. torque value, a

temperature value, a key press, etc.).

Run the Rheometer at any of the speeds in the Custom Speed menu.

Display messages to the screen or an attached printer to aid in operator usability.


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An internal clock that keeps time between each printed data line (this time is displayed as

the last parameter on each printed line) providing a consistent time base for the collected

data.

IV.3.1.1 Description of B.E.V.I.S. Commands

Command Code Required Parameter Command Description

WTI Time (MM:SS) The program waits at this step until the specied time elapses.

WPT % Torque value The program waits at this step until the current % torque equals the

(%) specied value.

WTP Temperature value The program waits at this step until the current temperature equals the

(C) specied value.

WKY 16 character (or less) The specied message is displayed on the top line of the DV-III Ultra dis

text message play while PRESS A KEYis displayed on the bottom line of the DV-III

Ultra. The program waits at this step until a viscometer key is pressed.

While waiting at this step, the viscometer produces a beep every few

second to remind the operator that a keypress is required to continue. If

a print interval was enabled (see SPI) at the time this command is

executed, the data print timer continues to count up. If the print interval

elapses and a key has not yet been pressed, a line of data displaying the

time since the last data print is printed as soon as a key is pressed.

SSN Speed value The DV-III Ultra begins rotating at the specied speed. This can be any

(RPM) of the speeds listed in the Speed list of the DV Loader software. These

speeds are the same as those listed in the Custom Speeds list in the

viscometers Options menu.

SPI Time The DV-III Ultra begins printing data to the selected printer (serial or

(MM:SS) parallel; as selected in the DV-III Ultra menus) at the rate specied.

MM:SS is minutes:seconds.

SSP Two digit spindle code Calculations of viscosity, shear stress, and shear rate are performed

based on the specied spindle code. This command overrides thespindle currently entered via the keypad on the DV-III Ultra.

STM Temperature value Set and control to the specied temperature if a Brookeld

Engineering Labs. temperature controller is attached to the rheometer.

STZ N/A Sets the data print timer clock back to zero.

PDN N/A The DV-III Ultra immediately prints a data string to the selected printer

(serial or parallel; as selected in the DV-III Ultra menus).

PLN 16 character (or less) The DV-III Ultra prints the specied message to the selected printer

text message (serial or parallel; as selected in the DV-III+ menus).

NOTE: MM:SS is minutes:seconds

By using various combinations of the above commands, programs are created that automatically controlthe viscometer and collect data (via an attached printer) from the DV-III Ultra Rheometer.


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The RheoLoader software is a Windows 95 (or above) basedprogram used to create, save, print and download B.E.V.I.S.programs to the DV-III Ultra Rheometer. Start the software byclicking on its associated icon or by clicking the Start button;

select Run; enter the name of the program to execute{Rheoad.exe}; then click OK.

This is the grid where the operator programs are created. Itis used to view and edit the B.E.V.I.S. programs. When thesoftware starts, an empty grid appears on the left of the screen.Highlight a command in the list box to the right of this grid,then click on the Insert button to insert the command into thehighlighted line of the grid. This same insertion task can also beaccomplished by double-clicking on the appropriate commandin the list box to the right.

Before being permitted to insert another command, the parameterfor the previous command in the grid must be entered if oneis required. This parameter is entered into the last column ofthe grid.

Select the COM (RS-232) port the Programmable DV-III Ultra Rheometer is connectedto from the COM Port drop down list. Low number generally represent RS-232 Ports.High number generally represent USB Ports.

The refresh button is used if all ports are not visible.

Click the Open File button to load existing B.E.V.I.S. programs.

Click the Save File button to save the B.E.V.I.S. program displayed in the grid.

Click the Print button to print the B.E.V.I.S. program displayed in the grid.

Click the Insert button to insert the B.E.V.I.S. command selected in the Commandsbox into the selected row in the program grid.


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Click the Delete button to delete the command in the selected row of the programgrid.

Click the Up button to move the command in the selected row of the program grid up

one row.

Click the Down button to move the command in the selected row of the program

grid down one row.

Click the Clear button to clear the grid of all commands. Once cleared, the

commands cannot be retrieved.

Figure IV-31

This list box displayed the commands available forcreating programs. As previously stated, clicking on theInsert button inserts the highlighted command (WTI in thiscase) into the selected line in the program grid. Double-clicking on a line in this list box also inserts the commandinto the grid.

The icons to the left of the command descriptions indicatethe type of command:

A command to wait for a condition.

A command to set a program para

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