BROOKFIELD DIGITAL VISCOMETER...Brookfield Engineering Labs., Inc. Page Manual No. M/98-350-G0307 Component Part Number Quantity DV-E Viscometer varies 1 Model A laboratory stand Model

Brookfield Engineering Labs., Inc. Page � Manual No. M/98-350-G0307

BROOKFIELD DIGITAL VISCOMETER

MODEL DV-E

Operating Instructions

Manual No. M/98-350-G0307

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.11 Commerce Boulevard, Middleboro, MA 02346 USA

with offices in: Boston • Chicago • London • Stuttgart • Guangzhou


TABLE OF CONTENTS

I. INTRODUCTION ...............................................................................................................3

I.1 Components ................................................................................................................3

I.2 Utilities ........................................................................................................................5

I.3 Specifications ..............................................................................................................5

I.4 Set-Up .........................................................................................................................5

I.5 Safety Symbols and Precautions .................................................................................6

I.6 Instrument Controls ....................................................................................................7

I.7 Cleaning ......................................................................................................................8

II. GETTING STARTED ......................................................................................................9

II.1 Power Up ....................................................................................................................9

II.2 Spindle Selection ........................................................................................................9

II.3 Speed Selection & Setting ........................................................................................10

II.4 Autorange and CGS or SI Units Selection ................................................................11

II.5 Out of Range ............................................................................................................12

II.6 Operation ...................................................................................................................13

Appendix A - Viscosity Ranges ...................................................................................................14

Appendix B - Variables in Viscosity Measurement ....................................................................17

Appendix C - Spindle and Model Codes ....................................................................................19

Appendix D - Calibration Procedures .........................................................................................21

Appendix E-ModelALaboratoryStandwithPartsIdentification ............................................26

Appendix F-TheBrookfieldGuardleg ......................................................................................28

Appendix G - Fault Diagnosis and Troubleshooting...................................................................30

Appendix H - Warranty Repair and Service ................................................................................31

Brookfield Engineering Labs., Inc. Page 3 Manual No. M/98-350-G0307

I. INTRODUCTION TheBrookfieldDV-EViscometermeasuresfluidviscosityatgivenshear rates. Viscosity isa

measureofafluid’sresistancetoflow.YouwillfindadetaileddescriptionofthemathematicsofviscosityintheBrookfieldpublication“MoreSolutionstoStickyProblems”acopyofwhichwas included with your DV-EandcanbedownloadedinpdfformfromtheBrookfieldwebsite, www.brookfieldengineering.com.

The principle of operation of the DV-Eistorotateaspindle(whichisimmersedinthetestfluid)throughacalibratedspring.Theviscousdragofthefluidagainstthespindleismeasuredbythespringdeflection.Springdeflectionismeasuredwitharotarytransducerwhichprovidesatorquesignal. The measurement range of a DV-E(incentipoiseormilliPascalseconds)isdeterminedbytherotationalspeedofthespindle,thesizeandshapeofthespindle,thecontainerinwhichthespindleisrotating,andthefullscaletorqueofthecalibratedspring.

TherearefourbasicspringtorqueseriesofferedbyBrookfield:

Spring TorqueModel dyne-cm milli Newton-m

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

Thehigherthespringtorque,thehigherthemeasurementrange.TheviscositymeasurementrangeforeachspringtorquemaybefoundinAppendix A.

All units of measurement are displayed according to either the CGS (cP) system or the SI (mPa•s) system.

1. Viscosityappearsinunitsofcentipoise(shownas“cP”)ormilliPascal-seconds(shownas“mPa•s”)ontheDV-E display.

2. Torqueappearsinunitsofdyne-centimetersorNewton-meters(shownaspercent“%”inbothcases)ontheDV-E display.

TheequivalentunitsofmeasurementintheSIsystemarecalculatedusingthefollowingconver-sions:

SI CGSViscosity: 1mPa•s = 1cPTorque: 1Newton-m = 107 dyne-cm

References to viscosity throughout this manual are made in CGS units. The DV-E Viscometer providesequivalentinformationinSIunits(seeSectionII.4AUTORANGE).

I.� Components

Pleasechecktobesurethatyouhavereceivedallcomponents,andthatthereisnodamage.Ifyouaremissinganyparts,pleasenotifyBrookfieldEngineeringoryourlocalBrookfieldagentimmediately. Any shipping damage must be reported to the carrier.


Component Part Number QuantityDV-E Viscometer varies 1Model A laboratory stand Model AK 1SpindleSetwithCase: LVDV-E set of four spindles SSL 1 or RVDV-Esetofsixspindles(#2-#7) SSR 1or HA/HBDV-E setofsixspindles(#2-#7) SSH 1PowerCord: for 115 VAC DVP-65 1 or for 230 VAC DVP-66 1GuardLeg: LVDV-E B-20Y 1or RVDV-E B-21Y 1CarryingCase 001Y 1Shipping Cap B-30-3 1

ShippingCap

Guard Leg

DV-EViscometer

Model A Laboratory Stand

Figure I-1


I.� Utilities

InputVoltage: 115 VAC or 230 VACInputFrequency: 50/60HzPowerConsumption: Lessthan20WATTS

PowerCordColorCode: United States Outside United StatesHot(live) Black BrownNeutral White BlueGround(earth) Green Green/Yellow

I.3 Specifications

Speeds: 0.3,0.5,0.6,1.0,1.5,2.0,2.5,3.0,4.0,5.0,6.0,10,12,20,30,50,60,100RPM

Weight: GrossWeight 20lb 9kg Net Weight 17 lb 7.7 kg Carton Volume 1.65 cu ft 0.05 m3

Carton Dimension 19 x 10 x 15 in 48 x 25 x 38 cm

OperatingEnvironment: 0°Cto40°CTemperatureRange(32°Fto104°F) 20%-80%R.H.:non-condensingatmosphere

Accuracy: ±1.0%FullScaleRangeinUse(SeeAppendix Dfordetails)

Reproducibility: 0.2%ofFullScaleRange

ElectricalCertifications:ConformstoCEStandards: BSEN50081-1:EmissionStandard-LightIndustrial BSEN50082-1:ImmunityStandard-LightIndustrial BSEN50081-2:EmissionStandard-Industrial BSEN50082-2:ImmunityStandard-Industrial BSEN61010-1:Safetyrequirementsforelectrical equipment,formeasurement,control and laboratory use

ApprovedStandards: CSAStd.C22.2No.151-M1986-LaboratoryEquipment CSAClass872181-LaboratoryEquipment

ThisproducthasbeencertifiedtotheapplicableCSAandANSI/ULStandards,forusein Canada and the U.S.

I.� Set-Up

1. ToassembletheModelALaboratoryStand,placetheuprightrodintothebase(refertoassembly instructions in Appendix E).

2. Insert the mounting rod on the back of the DV-E Viscometer into the hole on the clamp assembly. (Refer to Appendix E).

3. The Viscometer must be leveled. The level is adjusted using the three leveling screws on the base. Adjust so that the bubble level on top of the DV-E is centered within the circle.

Note: Check level periodically during use.


4. Remove the Viscometer shipping cap from the pivot cup. This cap is designed to protect the Viscometer spindle coupling nut during shipment. Do not attempt to operate the Vis-cometer with the shipping cap in place! Save this cap for future use.

5. Make sure that the power switch at the rear of the DV-E is in the OFF (0) position. Con-nect the power cord to the socket on the back panel of the instrument and plug it into the appropriate AC power line.

The AC input voltage and frequency must be within the appropriate range as shown on the name plate of the viscometer.

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

I.5 Safety Symbols and Precautions

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

Refertothemanualforspecificwarningorcautioninformationtoavoidpersonalin-jury or damage to the instrument.

Precautions Ifthisinstrumentisusedinamannernotspecifiedbythemanufacturer,theprotection

provided by the instrument may be impaired.

Thisinstrumentisnotintendedforuseinapotentiallyhazardousenvironment.

Incaseofemergency,turnofftheinstrumentandthendisconnecttheelectricalcordfromthe wall outlet

Theusershouldensurethatthesubstancesplacedundertestdonotreleasepoisonous,toxicorflammablegasesatthetemperaturestowhichtheyaresubjectedtoduringthetesting.


I.� Instrument Controls

Thefollowingdescribeseachswitch’sfunction:

Figure I-2

MOTOR ON

Turns the motor ON or OFF.

AUTO RANGE

Presentsthemaximum(100%torque)viscosityattainableusingtheselectedspindleattheselectedspeed. This value is referred to as full scale range. The allowable error for the viscosity measure-mentis±1%offullscalerange.

Note: Pressing and holding the AUTO RANGE key during power on will enable the viscos-itydisplaytobereadineitherCGS(cP)orSI(mPa•s)units.


SPEED/SPINDLE SWITCH

Setstheviscometerineitherspeedselectorspindleselect(seeTableC1inAppendixC)mode.Whensetintheleftposition,theoperatormayselectspeedofrotation.Whensetintherightposi-tion,theoperatormayselectspindle.

Note: Thisisathree(3)positionswitch.Werecommendthattheswitchbesettothemiddlepositionwhenfinishedwithspindleorspeedadjustment.Thiswillpreventanaccidental change of parameters during a test.

SELECT KNOB

This knob is used to scroll through the available speed or spindle selections (see Table C1 in Appen-dixC).Thisknobisactivewhentheswitchissettotheleft(speed)orright(spindle)position.

Rotate the knob clockwise to increase value and counter-clockwise to decrease value.

I.7 Cleaning

Be sure to remove spindle from instrument prior to cleaning. Note that the spindles and coupling have a left-hand thread. Severe instrument damage may result if cleaned in place.

InstrumentandKeypad: Cleanwithdry,non-abrasivecloth.Donotusesolventsor cleaners.

ImmersedComponents(spindles): Spindles aremadeof stainless steel. Cleanwithnon-abrasive cloth and solvent appropriate for sample material that is not aggressive to immersed components.

When cleaning, do not apply excessive force which may result in bending spin-dles.


II. GETTING STARTED

II.� Power Up

Turnthepowerswitch(locatedontherearpanel)totheON(I) position. This will result in the followingscreendisplay:

BROOKFIELD DV-ERV VISCOMETER

Figure II-1

Afterafewseconds,thefollowingscreenappears:

BROOKFIELD DV-EVERSION: 1.00

Figure II-2

Afterashorttime,thedisplaywillclearandthedefaultscreenisdisplayed:

cP10OFF% S02

Figure II-3

II.� Spindle Selection

LVDV-E Viscometers are provided with a set of four spindles and a narrow guardleg; RVDV-E Viscometerscomewithasetofsixspindlesanda“wider”guardleg;HADV-EandHBDV-EVis-cometers come with a set of six spindles and no guardleg. (See Appendix D for more information ontheguardleg.)

The spindles are attached to the viscometer by screwing them to the male coupling nut. Note that the spindles and coupling have a left-hand thread. The lower shaft should be held in one hand (liftedslightly),andthespindlescrewedtotheleft.Thefaceofthespindlenutandthematchingsurface on the coupling nut shaft should be smooth and clean to prevent eccentric rotation of the spindle.Spindlescanbeidentifiedbythenumberonthesideofthespindlecouplingnut.

The DV-E must have a Spindle Entry Code number to calculate viscosity values. The DV-E memorycontainsparametersforallstandardBrookfieldspindlesandthetwodigitentrycodeforeach spindle (the complete list of spindle entry codes may be found in Appendix C).

Note: The DV-E will display the Spindle Entry Code which was in use when power was turned off.

Setting the SPEED/SPINDLE switch to the right position will allow the operator to adjust the spindle selection. The SELECT knob can be rotated until the desired spindle number is selected. Oncethedesiredspindlenumberisshownonthedisplay,settheSPINDLE/SPEEDswitchtothemiddle position.

Brookfield Engineering Labs., Inc. Page �0 Manual No. M/98-350-G0307

Note: Verify the proper spindle entry code for the selected spindle found in Appendix C. Not all spindles have an entry code number that is the same as the spindle number. Forexample:thespindleentrycodeforspindleLV1is61andthespindleentrycodefor UL Adapter is 00.

The DV-E will begin to calculate using the new spindle parameters after the spindle number is shown in the display.

PleaseseeBrookfieldpublication,“MoreSolutionstoStickyProblems”(Chapter3),forinforma-tion on how to select a spindle.

II.3 Speed Selection & Setting

There are 18 rotational speeds available on the DV-E Viscometer. These speeds correspond to the standard LVF, LVT,RVF,RVT, HAT and HBT Dial Viscometers models and they are combined sequentially.SeeTable1below.

Table �: DV-E Speeds 0.3 10 0.5 12 0.6 20 1.0 30 1.5 50 2.0 60 2.5 100 3.0 4.0 5.0 6.0

Table Setting the SPEED/SPINDLE switch in the left position will allow the operator to adjust the speed

selection. The SELECT knob can be rotated until the desired speed is selected. Once the desired speedisshownonthedisplay,settheSPINDLE/SPEEDswitchtothemiddleposition.

The viscometer will rotate the spindle at the selected speed when the motor switch is in the ON position. A motor on condition is indicated on the display by RPM shown beside the speed. When the motor switch is in the OFFposition,OFF will be displayed beside the speed.

cP12RPM% S02

(MOTORON)

Brookfield Engineering Labs., Inc. Page �� Manual No. M/98-350-G0307

cP12OFF% S02

(MOTOROFF)Figure II-4

Note: WhenthemotorswitchisintheONposition,anychangetotheselectedspeedwillbeeffectiveimmediately.Whencollectingdataatmultiplespeeds,youmaywishtoleave the SPEED/SPINDLE switch in the left position to facilitate speed changes. Also,whenthemotorswitchisturnedoff,thedisplaywillholdthelastmeasuredtorquevalueandmeasuredviscosity.

TheDV-EViscometeremploysanopticalsignalpick-upinsidetheinstrumenttodetectthetorquevalue of the calibrated spring. This optical signal pick-up is recorded four times per revolution of thespindle.Whenthespindlebeginstorotateatadefinedspeed,fourtorquevaluesarerecordedduringthefirstfullrevolutionofthespindleandaveragedtogether.Thedisplayreportstheaveragevalueforbothtorque(%)andviscosity(cPormPa•s).Thereafter,thenexttorquevaluerecordedbytheopticalsignalpick-upisaveragedtogetherwiththethreeprecedingtorquevaluesandthenewlycalculatedtorque(%)andviscosity(cPormPa•s)valuesarethendisplayed.This4xrevolu-tion pick-up and display continues as long as the motor is on.

Thisalgorithmintheinstrumentfirmwareisusedforallviscosityandtorquereadings.Conse-quently,thewaittimetoobservetheinitial displayedreadingsfortorqueandviscosityincreaseasyou go to lower speeds.

Itmayalsobenecessarytoallowtimefortheindicatedreadingtostabilize.

Note: Atspeedsof1RPMandlower,additionaltimemayberequiredtoallowforcom-pletedeflectionofthetorquesensor.The%(torque)andcP(viscosity)willflashuntil1revolutionisachievedandthe%torquevalueisgreaterthan10%.

ThetimerequiredforstabilizationwilldependonthespeedatwhichtheViscometerisrunningandthecharacteristicsofthesamplefluid.Formaximumaccuracy,readingsbelow10%shouldbe avoided. Additional information on making viscosity measurements is available in Appendix B ortheBrookfieldpublication“More Solutions to Sticky Problems” .

The DV-E Viscometer will remember the selected speed and spindle when power is turned off. On start-up,theViscometerwillbesettothepreviouslyselectedspindleandspeed.

PleaseseeBrookfieldpublication“More Solutions to Sticky Problems”(Chapter3)forinformationon how to select a speed.

II.� Autorange and CGS or SI Units Selection

The AUTO RANGE key allows you to determine the maximum calculated viscosity (full scale read-ing)possiblewiththecurrent spindle/speed setting. Pressing the key at any time will cause the current viscosity display to change and show that maximum viscosity. Thescreentorquedisplaywillnowdisplay“%100”toindicatethisspecialcondition.Thismaximumviscosityand%100 value will be displayed for as long as the AUTO RANGE key is depressed. Figure 5 shows the AUTO RANGE function for the situation where the No. 2 RV spindle is rotating at 10 RPM. The


full scale range is 4000 cP (or 4000 mPa.s).

cP400010RPM%100 S02

Figure II-5 Pressing and holding the AUTO RANGE key during power on will enable the viscosity unit dis-

playedtotogglebetweenCGS(cP)andSI(mPa•s)units.Tochangetheunitformat:

1. Turn the power off. 2. Press and hold the AUTO RANGE key and turn the power ON.

The DV-E will retain the unit selection when the viscometer is turned OFF.

CGS SIViscosity: cP mPa.s

1cP=1mPa•s

II.5 Out of Range

The DV-Egivesindicationsforoutofspecificationorout-of-rangeoperation.When% (Torque)readingsexceed100.0%(over-range),thedisplaychangestothatshowninFigure 6:

cPEEEE10RPM%EEEE S02

Figure II-6

Youmusteitherreducespeedoruseasmallersizespindletocorrectthiscondition.Ifyouoperateat spindle speeds that produce % (Torque)below10.0%(under-range),theDV-E displays both % (Torque)andcP (Viscosity)withflashingunitdesignations.Youmusteitherincreasespeedorusealargersizespindletocorrectthiscondition.

Theparametersof%(Torque)andcP (Viscosity)willalsoflashprior toonecompletespindlerevolution.Itisnotrecommendedthatreadingsaretakenwhileparametersareflashing.

cP36010RPM%9.0 S02

Figure II-7

Negative % (Torque)willbedisplayedasshowninFigure II-8. Viscosity values will be displayed as “- - - -” when the % (Torque)isbelowzero.

cP----10RPM%-1.0 S02

Figure II-8


II.� Operation

The following procedure is outlined for making a viscosity measurement in the recommended 600 mLlowformGriffinbeaker.

1. Insertandcenterspindleinthetestmaterialuntilthefluid’slevelisattheimmersiongrooveonthespindle’sshaft.Withadisc-typespindle,itissometimesnecessarytotiltthespindleslightlywhileimmersingtoavoidtrappingairbubblesonitsundersidesurface.(Brookfieldrecom-mendsthatyouimmersethespindleinthisfashionbeforeattachingittotheViscometer.)

2. Mount the guardleg on the DV-E Viscometer(LVandRVseries).BesurethatthemotorisOFF before attaching the spindle. Select a spindle and attach it to the spindle coupling nut. Lifttheshaftslightly,holdingitfirmlywithonehandwhilescrewingthespindleonwiththeother (note left-hand thread).Avoidputtingsidethrustontheshaft.

3. Tomakeaviscositymeasurement,selectaspeedandfollowtheinstructionsinSectionsII.2 and II.3.Allowtimefortheindicatedreadingtostabilize.Thetimerequiredforstabilizationwilldepend on the speed at which the Viscometer is running and the characteristics of the sample fluid.Formaximumaccuracy,flashingreadingsbelow10%shouldbeavoided.AdditionalinformationonmakingviscositymeasurementsisavailableinAppendixBortheBrookfieldpublication “More Solutions to Sticky Problems”.

4. Switch the MOTOR ON/OFF switch to turn themotor “OFF”whenchanginga spindleorchanging samples. Remove spindle before cleaning.

5. Interpretationofresultsandtheinstrument’susewithnon-Newtonianandthixotropicmaterialsisdiscussedinthebooklet,“More Solutions to Sticky Problems”,andinAppendix B, Variables in Viscosity Measurements.


Appendix A - Viscosity Ranges

LV and RV,HA,HB Viscometers

Viscosity Range (cP)Viscometer Minimum Maximum

LVDV-E 15 2 MRVDV-E 100* 13 MHADV-E 200* 26 MHBDV-E 800* 106 M

*Minimum viscosity with optional RV/HA/HB-1 spindle

Small Sample Adapter (SSA) and Thermosel (Tsel)

SSA/Thermosel

SpindleShear Rate

(�/SEC)Viscosity (cP)

LVDV-E

SC4-16 (SSA) 0.29 N 120 - 400 KSC4-18 (SSA/Tsel) 1.32 N 3 - 10 KSC4-25 (SSA) 0.22 N 800 - 1.60 KSC4-31 (SSA/Tsel) 0.34 N 30 - 100 KSC4-34 (SSA/Tsel) 0.28 N 60 - 200 KHT-81 (Tsel) 1.29 N 3.5 - 10 KSC4-82 (SSA) 1.29 N 3.5 - 10 KSC4-83 (SSA) 1.29 N 11.0 - 38 K

SSA/ Thermosel Spindle

Shear Rate

(�/SEC)

Viscosity (cP)

RVDV-E HADV-E HBDV-ESC4-14 (SSA) 0.40N 1.25K - 4.2 M 2.5 M - 8.3 M 10 M - 33.3 MSC4-15 (SSA) 0.48N 500 - 1.7 M 1 M - 3.3 M 4 M - 13.3 MSC4-21 (SSA/Tsel) 0.93N 50 - 170 K 100 - 300 K 400 - 1.3 MSC4-27 (SSA/Tsel) 0.34N 250 - 830 K 500 - 1.7 M 2 M - 6.7 MSC4-28 (SSA/Tsel) 0.28N 500 - 1.7 M 1 M - 3.3 M 4 M - 13.3 MSC4-29 (SSA/Tsel) 0.25N 1 K - 3.3 M 2 M - 6.7 M 8 M - 26.7 MHT-81 (Tsel) 1.29N 36 - 10 K 73 - 10 K 292 - 10 KSC4-82 (SSA) 1.29N 36 - 10 K 73 - 10 K 292 - 10 KSC4-83 (SSA) 1.29N 121 - 50 K 242 - 50 K 970 - 50 K

cP = Centipoise K = 1,000 M = 1,000,000 N = RPM


UL Adapter

UL SpindleShear Rate

(�/SEC)

Viscosity (cP)

LVDV-E RVDV-E HADV-E HBDV-E

YULA-15 or 15Z 1.224N 1.0 - 2 K 6.4 - 2 K 12.8 - 2 K 51.2 - 2 K

DIN Adapter Accessory

DAA SpindleShear Rate

(�/SEC)

Viscosity (cP)


85 1.29N 1.2 - 3.8 K 12 - 5 K 24 - 5 K 98 - 5 K

86 1.29N 3 - 10 K 36 - 10 K 73 - 10 K 292 - 10 K

87 1.29N 11 - 38 K 12 - 50 K 242 - 50 K 970 - 50 K

Spiral Adapter

DAA SpindleShear Rate

(�/SEC)

Viscosity (cP)


SA-70 0.68 - 68 100 - 98 K 1 M - 1 M 2 M - 2 M 8 M - 8.4 M(1-100 RPM)

Helipath with T-Bar Spindles

T-Bar Spindle

Viscosity (cP)LVDV-E RVDV-E HADV-E HBDV-E

T-A 156 - 62 K 2 M - 400 K 4 M - 800 K 16 M - 3.2 MT-B 312 - 124 K 4 M - 800 K 8 M - 1.6 M 32 M - 6.4 MT-C 780 - 312 K 10 M - 2 M 20 M - 4 M 80 M - 16 MT-D 1.5 M - 624 K 20 M - 4 M 40 M - 8 M 160 M - 32 MT-E 3.9 M - 1.5 M 50 M - 10 M 100 M - 20 M 400 M - 80 MT-F 7.8 M - 3.1 M 100 M - 20 M 200 M - 40 M 800 M - 160 M

cP = Centipoise K = 1,000 M = 1,000,000 N = RPM

In taking viscosity measurements with the DV-EViscometer,therearetwoconsiderationswhichpertain to the low viscosity limit of effective measurement.


1) Viscositymeasurementsshouldbeacceptedwithintheequivalent%TorqueRangefrom10%to100%foranycombinationofspindle/speedrotation.

2) Viscositymeasurementsshouldbetakenunderlaminarflowconditions,notunderturbulentflowconditions.

Thefirstconsiderationhastodowiththeaccuracyoftheinstrument.AllDV-E Viscometers have a fullscalerangeaccuracyof(+/-)1%ofanyspindle/speedrotation.Wediscouragetakingreadingsbelow10%ofrangebecausethepotentialviscosityerrorof(+/-)1%isarelativelyhighnumbercompared to the instrument reading.

Thesecondconsiderationinvolvesthemechanicsoffluidflow.Allrheologicalmeasurementsoffluidflowpropertiesshouldbemadeunderlaminarflowconditions.Laminarflowisflowwhereinallparticlemovementisinlayersdirectedbytheshearingforce.Forrotationalsystems,thismeansallfluidmovementmustbecircumferential.Whentheinertialforcesonthefluidbecometoogreat,thefluidcanbreakintoturbulentflowwhereinthemovementoffluidparticlesbecomesrandomandtheflowcannotbeanalyzedwithstandardmathmodels.Thisturbulencecreatesafalselyhighviscometer reading with the degree of non-linear increase in reading being directly related to the degreeofturbulenceinthefluid.

Forthefollowinggeometries,wehavefoundthatanapproximatetransitionpointtoturbulentflowoccurs:

1) No.1LV(optional)Spindle: 15cP at 60 RPM 2) No.1RV(optional)Spindle: 100cP at 20 RPM 3) ULAdapter: 0.85cP at 60 RPM

Turbulent conditions will exist in these situations whenever the RPM/cP ratio exceeds the values listed above.


Appendix B - Variables in Viscosity Measurement Aswithanyinstrumentmeasurement,therearevariablesthatcanaffectaviscometermeasurement.

Thesevariablesmayberelatedtotheinstrument(viscometer),orthetestfluid.Variablesrelatedtothetestfluiddealwiththerheologicalpropertiesofthefluid,whileinstrumentvariableswouldincludetheviscometerdesignandthespindlegeometrysystemutilized.

Rheological Properties

Fluids have different rheological characteristics that can be described by viscometer measurements. Wecanthenworkwiththesefluidstosuitthelaborprocessconditions.

Therearetwocategoriesoffluids:

Newtonian - ThesefluidshavethesameviscosityatdifferentShearRates(differentRPM’s) andare calledNewtonianover theShearRate range theyaremeasured.

Non-Newtonian - Thesefluidshavedifferentviscositiesatdifferentshearrates(differentRPM’s).Theyfallintotwogroups:

1) TimeIndependent 2) TimeDependent

Time Independent means that the viscosity behavior does not change as a function of time when measuringataspecificshearrate.

Pseudoplastic - A pseudoplastic material displays a decrease in viscosity with an increase inshearrate,andisalsoknownas“shearthinning”.Ifyoutakeviscom-eterreadingsfromalowtoahighRPMandthenbacktothelowRPM,andthereadingsfalluponthemselves,thematerialistimeindependentpseudoplastic and shear thinning.

Time Dependent means that the viscosity behavior changes as a function of time when measur-ingataspecificshearrate.

Thixotropic - A thixotropic material has decreasing viscosity under constant shear rate. If you set a viscometer at a constant speed recording viscosity values over timeandfindthattheviscosityvaluesdecreasewithtime,thematerialisthixotropic.

Brookfieldpublication,“MoreSolutionstoStickyProblems”,includesamoredetaileddiscussionof rheological properties and non-Newtonian behavior.

Viscometer Related Variables

Mostfluidviscositiesarefoundtobenon-Newtonian.TheyaredependentonShearRateandthespindlegeometryconditions.Thespecificationsoftheviscometerspindleandchambergeometrywillaffecttheviscosityreadings.Ifonereadingistakenat2.5rpm,andasecondat50rpm,thetwo viscosity values produced will be different because the readings were made at different shear rates.Thefasterthespindlespeed,thehighertheshearrate.


Theshearrateofagivenmeasurementisdeterminedby:therotationalspeedofthespindle,thesizeandshapeofthespindle,thesizeandshapeofthecontainerusedandtherefore,thedistancebetween the container wall and the spindle surface.

Arepeatableviscositytestshouldcontrolorspecifythefollowing:

1) Testtemperature 2) Samplecontainersize(orspindle/chambergeometry) 3) Samplevolume 4) Viscometermodel 5) Spindleused(ifusingLVDV-E(#1-4)orRVDV-E(#2-7)attachtheguardleg) 6) Testspeedorspeeds(ortheshearrate) 7) Lengthoftimeornumberofspindlerevolutionstorecordviscosity.


Appendix C - Spindle and Model CodesEach spindle has a two digit code which is scrolled via the select knob on the DV-E. The spindle code directs the DV-E to calculate viscosity for the spindle that is being used. The spindle multiplier constant (SMC)isusedtocalculatefullscaleviscosityrangeforanyspindle/speedcombination.Spindle codes are listed in Table C-1. SPINDLE CODE SMC

01 {RV1 (optional) 01 102 {RV2 02 403 {RV3 03 1004 {RV4 04 2005 {RV5 05 4006 {RV6 06 10007 {RV7 07 400H01 {HA1 (optional) 01 1H02 {HA2 02 403 {HA3 03 1004 {HA4 04 2005 {HA5 05 4006 {HA6 06 10007 {HA7 07 400H01 {HB1 (optonal) 01 1H02 {HB2 02 403 {HB3 03 1004 {HB4 04 2005 {HB5 05 4006 {HB6 06 10007 {HB7 07 40061 {LV1 61 6.462 {LV2 62 3263 {LV3 63 12864 {LV4 64 64065 {LV5 (optional) 65 128066 {LV2C 66 3267 {LV3C 67 128SA -70 {Spiral 70 105V-71 71 2.62

SPINDLE CODE SMCV-72 72 11.1V-73 73 53.5V-74 74 543V-75 75 213T-A 91 20T-B 92 40T-C 93 100T-D 94 200T-E 95 500T-F 96 1000ULA 00 0.64DIN-ULA 85 1.22TSEL-DIN-81 81 3.7SSA-DIN-82 82 3.75SSA-DIN-83 83 12.09ULA-DIN-85 85 1.22ULA-DIN-86 86 3.65ULA-DIN-87 87 12.13SC4-14 14 125SC4-15 15 50SC4-16 16 128SC4-18 18 3.2SC4-21 21 5SC4-25 25 512SC4-27 27 25SC4-28 28 50SC4-29 29 100SC4-31 31 32SC4-34 34 64

Table C-1


VISCOMETER TORQUE CONSTANT MODEL CODE MODEL TK ON DV-E SCREEN LVDV-E 0.09373 LV RVDV-E 1 RV HADV-E 2 HA HBDV-E 8 HB

SPECIAL ORDER TORQUE SPRINGS

VISCOMETER TORQUE CONSTANT MODEL CODE MODEL TK ON DV-E SCREEN 2.5xLVDV-E 0.2343 2.5LV 5xLVDV-E 0.4686 5LV 1/4 RVDV-E 0.25 1/4RV 1/2 RVDV-E 0.5 1/2RV 2xHADV-E 4 2HA 2.5xHADV-E 5 2.5HA 2xHBDV-E 16 2HB 2.5xHBDV-E 20 2.5HB 5xHBDV-E 40 5HB

Table C-2

Thisequationcanbeusedtocalculatethemaximumviscositythatcanbemeasuredwhenusingaspecificspeed/spindlecombination.

FullScaleViscosityRange(FSR)=TK*SMC*10,000

RPM

TheunitsforFSRareincentipoise(cP).AnexampleisshowninAppendixD.


Appendix D - Calibration Procedures The accuracy of the DV-EisverifiedusingViscosityStandardFluidswhichareavailablefrom

BrookfieldEngineeringLaboratoriesoryourlocalBrookfieldagent.ViscositystandardsareNew-tonian,andtherefore,havethesameviscosityregardlessofspindlespeed(orshearrate).Viscositystandards,calibratedat25°C,areshowninTable D-1.

Container size: ForViscosityStandards<30,000cP,usea600mLLowFormGriffinBea-ker having a working volume of 500 mL.

ForViscosityStandards≥30,000cP,usethefluidcontainer.

InsideDiameter: 3.25”(8.25cm) Height: 4.75”(12.1cm)

Note:Containermaybelarger,butmaynotbesmaller.

Temperature: Asstatedonthefluidstandardlabel:(+/-)0.1°C

Conditions: TheDV-E should be set up according to the operating instructions. The water bathshouldbestabilizedattesttemperature.Viscometerswiththeletters“LV”or“RV”inthemodeldesignationshouldhavetheguardlegattachedwhenusingViscosityStandardFluidsbelow30,000cP.

Normal �5°C Standard Fluids Viscosity (cP) Viscosity (cP)

High Temperature Standard Fluids for usewith Thermosel Accessory

5 5,000 10 12,500 50 30,000 100 60,000 500 100,000 1,000

HT-30,000 HT-60,000 HT-1000,000

Calibrated at three viscosity/temperatures25°C, 93.3°C, 149°C

Refer to Brookfield catalog for more information.

Table D-1(Silicone Oils)

Brookfield Viscosity Standard Fluid - General Information

WerecommendthatBrookfieldViscosityStandardFluidsbereplacedonanannualbasis,oneyearfromdateofinitialuse.Thesefluidsarepuresiliconeandarenotsubjecttochangeovertime.However,exposuretooutsidecontaminantsthroughnormaluserequiresreplacementonanannualbasis.Contaminationmayoccurbytheintroductionofsolvent,standardofdifferentviscosityorother foreign material.

Viscosity Standard Fluids may be stored under normal laboratory conditions. Disposal should beinaccordancewithstate,localandfederalregulationsasspecifiedonthematerialsafetydatasheet.

BrookfieldEngineeringLaboratoriesdoesnotrecertifyViscosityStandardFluids.WewillissueduplicatecopiesoftheCertificateofCalibrationforanyfluidwithintwoyearsofthepurchasedate.


BrookfieldViscosityStandardFluidsarereusableprovidedtheyarenotcontaminated.Normalpractice for usage in a 600 ml beaker is to return the material from the beaker back into the bottle. WhenusingsmallervolumesinaccessoriessuchasSmallSampleAdapter,ULAdapter,ThermoselorSpiralAdapter,thefluidisnormallydiscarded.

Calibration Procedure for LV(#1-4) and RV,HA,HB(#2-7) Brookfield spindles:

1) Placetheviscositystandardfluid(inthepropercontainer)intothewaterbath.

2) LowertheDV-E into measurement position (with guard leg if LV or RV series viscometer is used).

3) Attachthespindletotheviscometer.Ifyouareusingadiskshapedspindle,avoidtrappingairbubblesbeneaththediskbyfirstimmersingthespindleatanangle,andthenconnectingittothe viscometer.

4) Theviscositystandardfluid,togetherwiththespindleandguardleg(ifsupplied),shouldbeimmersed in the bath for a minimumof1hour,stirringthefluidperiodically,priortotakingmeasurements.

5) After1hour,checkthetemperatureoftheviscositystandardfluidwithanaccuratethermom-eter.Fluidmustbewithin±0.1°Cofthespecifiedtemperature,normally25°C.Allowlongersoaktimeifrequiredtocometotesttemperature.

6) Ifthefluidisattesttemperature,measuretheviscosityandrecordtheviscometerreading.

Note: Thespindlemustrotateatleastfive(5)timesbeforereadingsaretaken.

7) TheviscosityreadingshouldequalthecPvalueontheviscosityfluidstandardtowithinthecombinedaccuraciesoftheviscometerandthestandard(asdiscussedinthesectionentitled,Interpretation of Calibration Test Results).

Calibration Procedure for a Small Sample Adapter

WhenaSmallSampleAdapterisused,thewaterjacketisconnectedtothewaterbathandthewaterisstabilizedatthepropertemperature:

1) Puttheproperamountofviscositystandardfluidintothesamplechamber.Theamountvar-ies with each spindle/chamber combination. (Refer to the Small Sample Adapter instruction manual.)

2) Placethesamplechamberintothewaterjacket.

3) Putthespindleintothetestfluidandattachtheextensionlink,couplingnutandfreehangingspindle(ordirectlyattachthesolidshaftspindle)totheDV-E.

4) Allow30minutesfortheviscositystandard,samplechamberandspindletoreachtesttem-perature.

5) Measuretheviscosityandrecordtheviscometerreading.

Note: Thespindlemustrotateatleastfive(5)timesbeforeaviscosityreadingistaken.


Calibration Procedure for a Thermosel System

A two-step process is recommended for the Thermosel.

A) EvaluatethecalibrationoftheViscometeraloneaccordingtotheprocedureoutlinedinthis section,entitledCalibration Procedure for LV (#1-4) and RV,HA,HB (#2-7) Brookfield spindles.

B) EvaluatetheViscometerwiththeThermoselaccordingtotheproceduredescribedbelow.

WhenaThermoselisused,thecontrollerstabilizestheThermoContaineratthetesttem-perature.

1) InstallthetubeendcapandputtheproperamountofHTviscositystandardfluidintotheHT-2 or HT-2DB sample chamber. The amount varies with the spindle used. (Refer to theThermoselinstructionmanual).

2) PlacethesamplechamberintotheThermoContainer.

3) Putthespindleintothetestfluidandattachtheextensionlink,couplingnutandfreehangingspindle(ordirectlyattachthesolidshaftspindle)totheDV-E.

4) Allow30minutesfortheviscositystandard,samplechamberandspindletoreachtesttemperature.



Calibration Procedure for UL Adapter

WhenaULAdapterisused,thewaterbathshouldbestabilizedatthepropertemperature:

1) InstallthetubeendcapandputtheproperamountofviscositystandardfluidintotheULTube.(RefertotheULAdapterinstructionmanual).

2) Attachthespindle(withextensionlinkandcouplingnut)ontotheDV-E.

3) Attachthetubetothemountingchannel.

4) Lowerthetubeintothewaterbathreservoir,orifusingtheULA-40Ywaterjacket,connectthe inlet/outlets to the bath external circulating pump.




Calibration Procedure for DIN Adapter Accessory

WhenaDINAdapterisused,thewaterbathshouldbestabilizedatthepropertemperature:


1) PuttheproperamountofviscositystandardfluidintotheULTube.(RefertotheDAAin-structionmanual).

2) Attachthespindle(withextensionlinkandcouplingnut)ontotheDV-E.

3) Attachthetubetothemountingchannel.

4) Lowerthetubeintothewaterbathreservoir,orifusingtheULA-40Ywaterjacket,connectthe inlet/outlets to the bath external circulating pump.




Calibration Procedure for Spiral Adapter

1) Placetheviscositystandardfluid(inthepropercontainer)intothewaterbath.

2) Attachthespindletotheviscometer.Attachchamber(SA-1Y)andclamptotheviscometer.

3) LowertheDV-E into measurement position. Operate the viscometer at 50 or 60 RPM until thechamberisfullyflooded.

4) Theviscositystandardfluid,togetherwiththespindle,shouldbeimmersedinthebathforaminimumof1hour,stirringthefluidperiodically(operateat50or60RPMperiodically),priorto taking measurements.

5) After1hour,checkthetemperatureoftheviscositystandardfluidwithanaccuratethermom-eter.

6) If thefluid isat test temperature(+/- 0.1°Cof thespecifiedtemperature,normally25°C),measure the viscosity and record the viscometer reading.

Note: Thespindlemustrotateatleastfive(5)timesforoneminute,whicheverisgreaterbefore readings are taken.

7) TheviscosityreadingshouldequalthecPvalueontheviscosityfluidstandardtowithinthecombinedaccuraciesoftheviscometerandthestandard(asdiscussedinthesectionentitled,InterpretationofCalibrationTestResults).However,instrumentaccuracyis±2%ofthemaximum viscosity range and notthestandard1%.

Interpretation of Calibration Test Results:

When verifying the calibration of the DV-E,theinstrumentandviscositystandardfluiderrormust be combined to calculate the total allowable error.

The DV-E is accurate to (+/-)1%ofanyfullscalespindle/speedviscosityrange.

BrookfieldViscosityStandardsFluidsareaccurateto(+/-)1%oftheirstatedvalue.


EXAMPLE: CalculatetheacceptablerangeofviscosityusingRVDV-E with RV-3 Spindle at 2 RPM;BrookfieldStandardFluid12,500withaviscosityof12,257cP at 25°C:

1) Calculatefullscaleviscosityrangeusingtheequation:

Full Scale Viscosity Range [cP] = TK * SMC * �0,000

RPM

Where: TK = 1.0 from Table C-� SMC = 10 from Table C-�

Full Scale Viscosity Range = � * �0 * �0,000 = 50,000 cP

�

The viscosity is accurate to (+/-) 500 cP (which is 1% of 50,000)

2) Theviscositystandardfluidis12,257cP. Its accuracy is (+/-)1%of12,257or (+/-)122.57cP.

3) Totalallowableerroris(122.57+500)cP=(+/-)622.57cP.

4) Therefore,anyviscosityreadingbetween11,634.4and12,879.6cP indicates that the viscometer is operating correctly. Any reading outside these limits may indicate a viscometer problem. ContacttheBrookfieldtechnicalsalesdepartmentoryourlocalBrookfielddealer/distributorwith test results to determine the nature of the problem.


Appendix E - Model A Laboratory Stand

Figure E-1

1

4

2

5

BROOKFIELDLABORATORYVISCOMETER

1

1311

VS-21VS-3VS-1VS-CRA-14A

JAM NUTLEVELING SCREWBASEUPRIGHT ROD AND CLAMP ASSEMBLY

ITEM PART # QTY.DESCRIPTION

OPTIONALVSXA-17ABLM-4E

CLAMP ASSEMBLY FOR EXPLOSION PROOF *for use with Thermosel and Water Baths

ROD EXTENSION - 4” LONG *

23456 OPTIONAL

VISCOMETERHEAD CLAMPKNOB

UP/DOWNKNOB

3


Unpacking

Check carefully to see that all the components are received with no concealed damage.

1base(VS-1) 1jamnut(VS-21)3levelingscrews(VS-3) 1clampandrodassembly(VS-CRA-14A)

Removethethree(3)levelingscrewsfromthebaseanddiscardthepackingmaterial.Removethejam nut from the upright rod.

Assembly (Refer to Figure E1)

Screw the leveling screws into the base. Insert the threaded end of the upright rod into the hole in the top of the base and attach the jam nut to the rod on the underside of the base. With the rod gear rackfacingforward(towardthe“V”inthebase),gentlytightenthejamnut.

Viscometer Mounting

TheVS-CRA-14Aclampandrodassemblyshouldbepositionedsothattheword‘front’isfacingthe operator. This will ensure the cut-away slot of the clamp assembly will align properly with the machined key ridge of the viscometer handle. Insert the viscometer rod into the cut-away hole of the clamp assembly. Adjust the instrument level until the bubble is centered within the target and tighten the clamp knob.

The small clamp adjusting screw (Item #10, Figure E1) on the front of the clamp assembly should be loosened or tightened as necessary to provide smooth height adjustment and adequate support for the Viscometer.

CentertheViscometerrelativetothestandbaseandretightenthejamnutasrequired.ReferringtotheViscometerbubblelevel,adjustthelevelingscrewsuntiltheinstrumentislevel.

Operation

Rotate the Gear Screw to raise or lower the viscometer.


Appendix F - The Brookfield Guardleg

Theguardlegwasoriginallydesignedtoprotectthespindleduringuse.ThefirstapplicationsoftheBrookfieldViscometerincludedhandheldoperationwhilemeasuringfluidsina55gallondrum.It is clear that under those conditions the potential for damage to the spindle was great.

The current guard leg is a band of metal in the shape of the letter U with a bracket at the top that attachestothepivotcupofaBrookfieldViscometer/Rheometer.AguardlegissuppliedwithallLVandRVseriesinstruments,butnotwiththeHAorHBseries.It’sshapeisdesignedtoaccom-modatethespindlesoftheappropriatespindleset;therefore,theRVguardlegiswiderthantheLVduetothelargediameteroftheRV#1(optional)spindle.Theyarenotinterchangeable.

ThecalibrationoftheBrookfieldViscometer/Rheometerisdeterminedusinga600mlLowFormGriffinBeaker.ThecalibrationofLVandRVseriesinstrumentsincludestheguardleg.Thebeakerwall(forHA/HBinstruments)ortheguardleg(forLV/RVinstruments)definewhatiscalledthe“outerboundary”ofthemeasurement.ThespindlefactorsfortheLV,RV,andHA/HBspindleswere developed with the above boundary conditions. The spindle factors are used to convert the instrumenttorque(expressedasthedialreadingor%Torquevalue)intocentipoise.Theoretically,ifmeasurementsaremadewithdifferentboundaryconditions,e.g.,withouttheguardlegorinacontainerotherthan600mlbeaker,thenthespindlefactorsfoundontheFactorFindercannotbeused to accurately calculate an absolute viscosity. Changing the boundary conditions does not changetheviscosityofthefluid,butitdoeschangehowtheinstrumenttorqueisconvertedtocen-tipoise.Withoutchangingthespindlefactortosuitthenewboundaryconditions,thecalculationfrominstrumenttorquetoviscositywillbeincorrect.

Practicallyspeaking,theguardleghasthegreatesteffectwhenusedwiththe#1&#2spindlesoftheLVandRVspindlesets.AnyotherLV(#3&#4)orRV(#3-#7)spindlecanbeusedina600ml beaker with or without the guard leg to produce correct results. The HA and HB series Viscom-eters/Rheometers are not supplied with guard legs in order to reduce the potential problems when measuring high viscosity materials. HA/HB spindles #3 through #7 are identical to those spindle numbers in the RV spindle set. The HA/HB #1 & #2 have slightly different dimensions than the corresponding RV spindles. This dimensional difference allows the factors between the RV and HA/HB#1&#2spindlestofollowthesameratiosastheinstrumenttorqueeventhoughthebound-ary conditions are different.

Therecommendedproceduresofusinga600mlbeakerandtheguardlegaredifficultforsomecustomers to follow. The guard leg is one more item to clean. In some applications the 500 ml oftestfluidrequiredtoimmersethespindlesina600mlbeakerisnotavailable.Inpractice,asmallervesselmaybeusedandtheguardlegisremoved.TheBrookfieldViscometer/Rheometerwill produce an accurate and repeatable torque reading under anymeasurement circumstance.However,theconversionofthistorquereadingtocentipoisewillonlybecorrectifthefactorusedwasdevelopedforthosespecificconditions.BrookfieldhasoutlinedamethodforrecalibratingaBrookfieldViscometer/Rheometertoanymeasurementcircumstancein“MoreSolutionstoStickyProblems”,Section3.3.10.Itisimportanttonotethatformanyviscometerusersthetrueviscosityis not as important as a repeatable day to day value. This repeatable value can be obtained without anyspecialeffortforanymeasurementcircumstance.But,itshouldbeknownthatthistypeoftorquereadingwillnotconvertintoacorrectcentipoisevaluewhenusingaBrookfieldfactoriftheboundaryconditionsarenotthosespecifiedbyBrookfield.

TheguardlegisapartofthecalibrationcheckoftheBrookfieldLVandRVseriesViscometer/Rhe-ometer.Ourcustomersshouldbeawareofitsexistence,itspurposeandtheeffectthatitmayhaveondata.Withthisknowledge,theviscometerusermaymakemodificationstotherecommendedmethod of operation to suit their needs.


RV Guardleg LV Guardleg

Figure F-1


Appendix G - Fault Diagnosis and Troubleshooting

Listed are some of the more common problems that you may encounter while using your DV-E Viscometer.ReviewtheseitemsbeforeyoucontactBrookfield.

Spindle Does Not Rotate

o Make sure the viscometer is plugged in.

oCheckthevoltageratingonyourviscometer(115V,220V):itmustmatchthewallvoltage.

o Make sure the power switch is in the ON position.

o Make sure the speed set knob is set properly and securely at the desired speed.

Spindle Wobbles When Rotating or Looks Bent

o Make sure the spindle is tightened securely to the viscometer coupling.

o Check the straightness of all other spindles; replace them if bent.

o Inspectviscometercouplingandspindlecouplingmatingareasandthreadsfordirt:cleanthreads on spindle coupling with a 3/56 left-hand tap.

oInspectthreadsforwear;ifthethreadsareworn,theunitneedsservice(seeAppendix G).

o Check to see if spindles rotate eccentrically or wobble. There is an allowable runout for 1/32-inchineachdirection(1/16-inchtotal)whenmeasuredfromthebottomofthespindlerotat-ing in air.

oChecktoseeiftheviscometercouplingisbent;ifso,theunitisinneedofservice.

Ifthepointersticksand/ordoesnotrestatzero,theunitisneedofservice.SeeAppendix G for details on how to return your viscometer.

Inaccurate Readings

oVerifyspindle,speedandmodelselection

oVerifytestparameters:temperature,container,volume,method.Referto: • “MoreSolutionstoStickyProblems”; Section II.2a — Considerations for Making Mea-

surements • DialViscometerOperatingManual;AppendixB—ViscosityRanges • DialViscometerOperatingManual;AppendixC—VariablesinViscosityMeasurement

o Perform a calibration check. Follow the instructions in Appendix D. • Verifytolerancesarecalculatedcorrectly. • Verifycalibrationcheckprocedureswerefollowedexactly

Iftheunitisfoundtobeoutoftolerance,theunitmaybeinneedofservice.SeeAppendix H for details on how to return your viscometer.

Brookfield Engineering Labs., Inc. Page 3� Manual No. M/98-350-G0307

q Removeandreturnallspindles(properlypackedforshipping).DO NOT RETURN VISCOMETER WITH SPINDLE AT-TACHED.

q Clean excess testing material off the instrument.

q IncludeMSDSsheetsforallhazardousmaterialstestedwiththisinstrument.

q Ifyouhaveshippingcap,asshowninFigure1,pleaseuseittosupportthepointershaft.Ifyoudon't,thenusearubberbandas shown in Figure 2 to support the pointer shaft.

q Pack the instrument in its original case. Cases are available for immediateshipmentfromBrookfield.Ifthecaseisnotavailable,take care to wrap the instrument with enough material to support it. Avoid using foam peanuts or shredded paper.

q DO NOT send the laboratory stand unless there is a problem withtheuprightrod,clamporbase.Ifthereisaproblemwiththestand,removetheuprightrodfromthebaseandindividuallywrap each item to avoid contact with the instrument. Do not put lab stand in viscometer carrying case.

Note: DV-III/DV-III+:Youmustsendthebaseandallcableswhenthere

is an electrical problem. It should be packaged carefully in a separate box from the rheometer head.

q Fill out the Repair Return Form with as much information as possible to help expedite your service. If you do not have this form,youcandownloaditfromourwebsite:

www.brookfieldengineering.com/support/maintenance -or - [email protected] TEL 508-946-6200 or 800-628-8139 FAx 508-923-5009

q Package the instrument and related items in a strong box for ship-ping. Mark the outside of the box with handling instructions.

Example: “HandlewithCare”or “Fragile-DelicateInstrument” “Rush” if appropriate

Packaging Instructions to Return a Brookfield Viscometer for Repair or Calibration

FIGURE

3

FIGURE

�

Forcone/plateinstruments,pleaseremovetheconespindleandcarefullypackinplaceintheshippingcase.Ifavailable,usetheoriginalfoaminsertorrolluponesheetoftissuepaper(orsimilar)andplacebetweenthespindlecouplingandcupassembly(seeFigure3).Thiswillhelppreventdamageinshipping.

Steps: 1. qPackagetheViscometerforshipment,asoutlinedbelow. 2. q Return the Viscometer to the attention of the Repair Department at the address on

thefollowingpageortoyourlocalauthorizedBrookfielddealer.

Requests for rush service must be indicated on your package.

¸

CONE/PLATEFoam Insert

or Tissue Paper

FIGURE

�Rubber Band

Dial or DigitalViscometer

Appendix H - Warranty Repair and Service


BrookfieldViscometersareguaranteedforoneyearfromdateofpurchaseagainstdefectsinmateri-als and workmanship. The Viscometer must be returned to Brookfield Engineering Laboratories, Inc.ortheBrookfielddealerfromwhomitwaspurchasedfornochargewarrantyevaluationservice.Transportationisatthepurchaser’sexpense.TheViscometershouldbeshippedinitscarryingcasetogether with all spindles originally provided with the instrument.

For repair or service in the United Statesreturnto:

BrookfieldEngineeringLaboratories,Inc.11 Commerce Boulevard

Middleboro,MA02346U.S.A.

Telephone:(508)946-6200FAX:(508)923-5009www.brookfieldengineering.com

ForrepairorserviceoutsidetheUnitedStatesconsultBrookfieldEngineeringLaboratories,Inc.orthedealer from whom you purchased the instrument.

For repair or service in the United Kingdomreturnto:

BrookfieldViscometersLimited1 Whitehall Estate

FlexMeadow,PinnaclesWestHarlow,EssexCM195TJ,UnitedKingdom

Telephone:(44)27/9451774FAX:(44)27/9451775www.brookfield.co.uk

For repair or service in Germany returnto:

BrookfieldEngineeringLaboratoriesVertriebsGmbHHauptstrasse 18

D-73547Lorch,Germany

Telephone:(49)7172/927100FAX:(49)7172/927105www.brookfield-gmbh.de

For repair or service in China returnto:

GuangzhouBrookfieldViscometersandTextureInstrumentsServiceCompanyLtd.RoomC1,5/F,TianxingBuildingEastTower,No.21,ZhongshanYiRoad,YuexiuDistrict

Guangzhou,510600,P.R.China

Telephone:(86)20/3760-0548FAX:(86)20/3760-0548www.brookfield.com.cn

On-site service at your facility is also available from Brookfield. Please contact our Service Depart-ment in the United States, United Kingdom, Germany or China for details.



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Documents

BROOKFIELD DIGITAL VISCOMETER...Brookfield Engineering Labs., Inc. Page Manual No. M/98-350-G0307 Component Part Number Quantity DV-E Viscometer varies 1 Model A laboratory stand Model