Brookfield YR-1 User manual

BrookfieldEngineeringLabs.,Inc.Page1ManualNo.M/02-215BROOKFIELDYR-1RHEOMETEROperatingInstructionsManualNo.M/02-215
BROOKFIELDENGINEERINGLABORATORIES,INC.11CommerceBoulevard,Middleboro,MA02346-1031USA
SPECIALISTSINTHEMEASUREMENTANDCONTROLOFVISCOSITY
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BrookfieldEngineeringLabs.,Inc.Page2ManualNo.M/02-215ContentsI.INTRODUCTION................................................................................................3I.1Components.......................................................................................................................4I.2Utilities................................................................................................................................4I.3Specifications.....................................................................................................................5I.4Installation..........................................................................................................................5I.5KeyFunctions....................................................................................................................6II.GETTINGSTARTED..............................................................................................7II.1Autozero.............................................................................................................................7II.2TheDefaultScreen............................................................................................................8II.3RunningAProgram............................................................................................................8II.4DataOutput......................................................................................................................11II.5PrintingAProgram...........................................................................................................12II.6TestResults......................................................................................................................14II.6.1TestPassed.............................................................................................................14II.6.2TestFailed...............................................................................................................14III.EZ-YIELDSOFTWARE....................................................................................16III.1EZ-YieldOverview............................................................................................................16III.2EZ-YieldQuickStart.........................................................................................................16III.3TestParameterDescription..............................................................................................17III.4ToolbarandMenuOptions...............................................................................................18III.5TestParametersPage......................................................................................................22III.5.1Pre-shearing...........................................................................................................23III.5.2Zeroing...................................................................................................................23III.5.3WaitTime...............................................................................................................23III.5.4RunSpeed.............................................................................................................23III.5.5BaseIncrement......................................................................................................23III.5.6TorqueReduction...................................................................................................24III.6DataPage..........................................................................................................................24III.7GraphsPage......................................................................................................................26IV.EXAMPLES......................................................................................................29APPENDIXA-SpindleandModelCodes..........................................................................................31APPENDIXB-Speeds.......................................................................................................................32APPENDIXC-CalibrationProcedures..............................................................................................33APPENDIXD-Calculations...............................................................................................................37APPENDIXE-Communications........................................................................................................39APPENDIXF-ModelSLaboratoryStand.........................................................................................41APPENDIXG-DVE-50ProbeClip....................................................................................................43APPENDIXH-FaultDiagnosisandTroubleshooting........................................................................44APPENDIXI-WarrantyRepairandService......................................................................................48

BrookfieldEngineeringLabs.,Inc.Page3ManualNo.M/02-215I.INTRODUCTIONTheyieldpointisthepointatwhichamaterialbeginstoflow.Theassociatedpropertiesaretheyieldstressandyieldstrain.Theyieldstressisthecriticalshearstress,appliedtothesample,atwhichthematerialbeginstoflowasaliquid.Theyieldstrainisthedeformation,resultingfromtheappliedstress,atwhichtheflowstarts.Manymaterialsaredesignedtohaveayieldpoint,sothatthebehavioroftheirproductssatisfiesvariouscustomerneeds.Foodsoftenhaveyieldpoints.Ketchupinparticularmustflowoutofabottlewhenshakenorsqueezed,butthensolidifyonthetargetedfoodsuchasfrenchfries.Shakingorsqueezingthebottlestressestheketchupsothatitflows;aftertheketchupsettlesonthefries,itsstructurerebuildssotheketchup“sits”inplaceratherthanflowingoffthefrieslikewater.Puddingshaveyieldpoints,aswell.The“body”ofthepuddingappealstoconsumers–it’ssolidatrest,yetit’seasilyspoonedoutofitscupandiseasytoeat.Thus,theyieldbehaviorofmanyfoodscontributestothefoodtexturethatwelike.Manypaintshavelowyieldstresses.Manylatexhousepaints,forexample,areeasilystirredorpoured.Brushingorsprayingprovidesenoughstresssothatthepaintflowseasilyandsmoothlyoverapaintedwall.However,athinlayerofappliedpaint(ifagoodone!),allowedtorestundisturbedonthesurface,regainsitsstructurequicklysothatthereisverylittleunsightly“dripping”afterwards.Thesmoothappearanceofthepaintedsurfaceisveryappealingtothehomeowner.TheprincipalofoperationoftheYR-1Rheometeristodriveavanespindle(whichisimmersedinthetestmaterial)atverylowrotationalspeed.TheresistanceofthematerialtomovementismeasuredbyobservingincreasingtorquevaluesastheYR-1motorrotatesfasterthanthespindle.Thedisplacementofthematerialbythespindleismeasuredbythedeflectionofthecalibratedspiralspringinsidetheinstrument.Springdeflectionismeasuredwitharotarytransducer.TheshearstressmeasurementrangeoftheYR-1(inPascals)isdeterminedbythesizeandshapeofthevanespindle,andthefullscaletorqueofthecalibratedspring.TherearethreebasicspringtorqueseriesofferedbyBrookfield:Spring Torque
Modeldyne-cmmilliNewton–mRVYR-17,187.00.7187HBYR-157,496.05.74965XHBYR-1287,480.028.748Theshearstressmeasurementrangeforeachspringtorqueisasfollows:
V-71RV.5-5V-72RV2-20V-73RV10-100V-71HB4-40V-72HB16-160V-73HB80-800V-715xHB20-200V-725xHB80-800V-735xHB400-4000TorqueShearStressSpindleRangeRange(Pa)

BrookfieldEngineeringLabs.,Inc.Page4ManualNo.M/02-215TheequivalentunitsofmeasurementintheSIsystemarecalculatedusingthefollowingconversions:SICGSShearStress:1Pascalor1Newton/m2=10dyne/cm2Torque:1Newton-m=107dyne-cmI.1ComponentsThefollowingiemsareincludedinyourinstrumentkit:ComponentPartNumberQuantityYR-1Rheometervaries,e.g.RVYR1-1151(115voltYR-1withRVspringtorque)ModelSLaboratoryStandMODELS1SpindleSetwithCaseSSVANE1V-71spindle1V-72spindle1V-73spindle1PowerCordDVP-65for115Vor1DVP-66for230VRTDTemperatureProbeDVP-94Y1CarryingCaseDVE-7Y1EZ-YieldSoftwareDisk(3-1/2”)YR1-4AY1InterconnectingCabletoPCDVP-801OperatingManualM02/2151Pleasechecktobesurethatyouhavereceivedallcomponents,andthatthereisnodamage.Ifyouaremissinganyparts,pleasenotifyBrookfieldEngineeringoryourlocalBrookfieldagentimmediately.Anyshippingdamagemustbereportedtothecarrier.I.2UtilitiesInputVoltage:115VACor230VACInputFrequency:50/60HzPowerConsumption:Lessthan20WATTSPowerCordColorCode:UnitedStatesOutsideUnitedStatesHot(live)BlackBrownNeutralWhiteBlueGround(earth)GreenGreen/Yellow

BrookfieldEngineeringLabs.,Inc.Page5ManualNo.M/02-215I.3SpecificationsSpeeds:PreShear0.01to200rpmZero0.01to0.5rpmYieldTest0.01to5rpmTimeIntervals:100msec–1000msec(1sec)Weight:GrossWeight23lbs.10.5kg.NetWeight20lbs.9kg.CartonVolume1.65cu.Ft.0.05m3Temperaturesensingrange:-100°Cto300°C(-148°Fto572°F)AnalogTorqueOutput:0–1VoltDC(0–100%Torque)AnalogTemperatureOutput:0–4VoltsDC(10mV/°C)RS232CompatibleSerialPortforusewithanattachedprinterorPC.CentronicsCompatibleParallelPortforusewithanattachedprinter.TorqueAccuracy:±1.0%offullscalerangeTorqueRepeatability:±0.2%TemperatureAccuracy:±1°C:-100°Cto+149°C±2°C:+150°Cto+300°CElectricalCertifications:CUL,CEI.4Installation1)AssembletheModelSLaboratoryStand(refertoassemblyinstructionsinAppendixH).2)ConnecttheRTDprobetothesocketontherearpaneloftheYR-1.3)TheRheometermustbeleveled.Thelevelisadjustedusingthetwolevelingscrewsonthebase.AdjustsothatthebubblelevelontopoftheYR-1iscenteredwithinthecircle.Note:Checklevelperiodicallyduringuse.4)RemovethewhiteshippingcapwhichsecuresspindlecouplingnutonRheometertopivotcup.5)MakesurethattheACpowerswitchattherearoftheYR-1isintheOFFposition.ConnectthepowercordtothesocketonthebackpaneloftheinstrumentandplugitintotheappropriateACline.TheACinputvoltageandfrequencymustbewithintheappropriaterangeasshownonthenameplateoftheRheometer.Note:TheYR-1mustbeearthgroundedtoensureagainstelectronicfailure!!6)TurnthepowerswitchtotheONpositionandallowtowarmupfor10minutesbeforeperformingautozero.

BrookfieldEngineeringLabs.,Inc.Page6ManualNo.M/02-2157)Ifappropriate,connectinterconnectingcabletoserialportforconnectionofYR-1toPCorprinter.8)Ifappropriate,connectinterconnectingcabletoparallelportforconnectionofYR-1toprinter.9)Ifappropriate,connectinterconnectingcabletoanalog(serial)portforconnectionofYR-1tochartrecorder.I.5KeyFunctionsThefollowingexplainsthefunctionsofthecontrolkeysonthefaceoftheYR-1YieldRheometer.UPARROWUsedtoscrollUP(inanincreasingdirection)throughthemenuandprogramselections.DOWNARROWUsedtoscrollDOWN(inadecreasingdirection)throughthemenuandprogramselections.ENTERUsedtoacceptoractivatethecurrentselection.ESCAPEUsedtocancelanoperationorreturntoapreviousscreen.Note:Selectionsareindicatedasflashingtextonthescreendisplay.ENTERESC

BrookfieldEngineeringLabs.,Inc.Page7ManualNo.M/02-215II.GETTINGSTARTEDThissectionexplainshowtousetheYR-1Rheometerinstandalonemode.TherearenotestprogramsstoredininstrumentmemorywhentheYR-1isshippedfromBrookfield.Therefore,youwillneedtoreviewSectionIIIontheEZ-YieldSoftwarewhichexplainshowtocreatetestprograms.OnceatestprogramhasbeendownloadedfromyourPCtotheYR-1,youwillbeabletoruntestsbyfollowingtheinstructionsinthissection.II.1AutozeroBeforeanydatamaybetaken,therheometermustbeAuto-zeroed.Thisactionisperformedeachtimetheinstrumentispoweredon.Thedisplayontherheometerwillguideyouthroughtheprocedureasfollows:Set the power switch (located on the rear panel) to the ON position (press the 1 on the power
switch) and allow to warm up for 10 minutes.
After applying power to the unit, the display will read:
BROOKFIELD YR-1
YIELD RHEOMETER
Figure1This te t is displayed for three (3) seconds after which the display will read:
BROOKFIELD YR-1
RV Version 1.0
Figure2Figure2showstheinstrumenttorquemeasurementrangeonthebottomleft(inthecaseofFigure2,RV)andtheinstrumentfirmwareversionnumberonthebottomright.Thistextisdisplayedforthree(3)secondsafterwhichthedisplaywillread:
REMOVE SPINDLE
PRESS ANY KEY
Figure3Afterremovingthespindleandpressinganykey,theYR-1beginsitsAuto-zero.Thefollowingisdisplayedduringtheauto-zero(withAUTOZEROIN flashing):
AUTOZEROIN
PLEASE WAIT
Figure4Whentheauto-zeroiscomplete,theDefaultScreen(Figure5)isdisplayed.

BrookfieldEngineeringLabs.,Inc.Page8ManualNo.M/02-215II.2TheDefaultScreenTheDefaultScreenisshownbelow:
#5 Sample Tst
START TEST 
Figure5wheretheprogramnumber(#0through#9)andtheprogramname(inthiscase,“SampleTst”)aredisplayedonthetopline.START TEST isflashingindicatingitisthecurrentmenuselection.Note:Iftheprogramnumberchosenhasnoprogramloaded,thewordEMPTY isdisplayedastheprogramname.PressingeithertheorkeycausesthebottomlinetocyclebetweenthatshowninFigure5andFigure6.
#5 Sample Tst
PRINT TEST 
Figure6PressingtheENTERkeyselectstheoptionthatisflashingcausingthebottomlinetostopflashingandthetoplinetostartflashing.Thetoplineisnowtheactiveline,allowingyoutoselectwhichprogramtouse.Pressing the ESC key when Figure 5 or 6 is displayed has no effect.
II.3RunningAProgramWhentheDefaultScreeninFigure5isdisplayedandSTART TEST istheoptiondisplayedonthebottomline,pressingtheENTERkeydisplaysthefollowingscreen:
#5 Sample Tst
START TEST

Figure7Note:Whilethetoplineistheactiveselectionline,theprogramnumberandnamewillalwaysbeflashing.Pressingtheorkeyscrollsthroughtheprogramnumbers(0-9)anddisplaysthecorrespond-ingprogramname.Whilescrolling,iftheslotscrolledtohasnoprograminit,EMPTY isdisplayednexttotheprogramnumber,andpressingtheENTERkeyhasnoeffect.PressingtheESCkeywiththisscreendisplayedcausesthescreeninFigure5toagainbedisplayed(i.e.gobackonelevel).

BrookfieldEngineeringLabs.,Inc.Page9ManualNo.M/02-215OncethesampleispreparedandtheENTERkeyispressedwithavalidprogramdisplayed,thefollowingscreenisdisplayed:
USE SPINDLE #71
PRESS ENTER
Figure8wherethetwo(2)digitspindlenumberisdisplayedonthetopline.Attachtheappropriatespindleandloweritintothesamplebeforecontinuing.PressingtheENTERkeywithFigure8displayedperformsthefollowing:•Thetestisstarted.•Thepre-testinformation(testparameters)issenttoboththeserial(RS-232)portandtoanattachedprinterviatheparallelprinterport.SeesectionIII.3foradescriptionofthepre-testinformationsenttotheprinter.•TheprogramnumberbeingrunisrecordedsothatitwillbethefirstprogramshownthenexttimethatSTART TEST isselectedfromtheDefaultScreen(Figure5).PressingtheESCkeyatthisscreencausesFigure7tobedisplayed.AfterensuringtheappropriatespindleisattachedandpressingtheENTERkey,thevariousRunscreensaredisplayed.ThetoplineoftheRunscreensalwaysdisplaystheprogramandspindlenumberasfollows:
TEST #5 SPDL 71
----------------
Figure9wheretheprogramandspindlenumbersinusearedisplayedonthetopline.ThebottomlineoftheRunscreensvarydependingupontheoptionsselectedintheprogram.Figure10isdisplayedwhenaPre-Shearspeedandtimewereselected.Ifthecurrentpro-gramrequiresaPre-shearstep,thespindlewillrotateattheselectedspeedfortheselectedtime.ThefirstfieldafterthewordSHEARisthespeedofthepre-shear(inrpm)whilethesecondfieldisatime(inseconds)thatcountsdownfromtheuserdefinedpre-sheartime.APre-shearstepallowsthesampletobeconditionedbeforetheactualtestisstarted.InFigure10,thepre-shearspeedis10rpmandthepre-sheartimeis30seconds.
TEST #5 SPDL 71
SHEAR: 010 0030
Figure10Figure11isdisplayedwhenaZerooperationwasselected.IfthecurrentprogramrequiresaZerostep,thespindlerotatesbackwardsuntilthe%torquereadingiszero(0).ThefirstfieldafterthewordZEROINGisthespeed(inrpm)whilethesecondfieldisthecurrent%torquereading.AZerostepensuresthateachtestisstartedfrom0%torque.InFigure11,thespeedis.2rpmandthetorquereadingismomentarilyat2.4%asitdecreasesbackto0%.

BrookfieldEngineeringLabs.,Inc.Page10ManualNo.M/02-215
TEST #5 SPDL 71
ZEROIN :0.2 2.4
Figure11Figure12isdisplayedwhenaWaitTimewasselected.AWaitTimestepallowsforauser-definedtimedelaybeforestartingthetest.ThefieldafterthewordWAITisthetime(inseconds)thatcountsdownfromtheuser-definedwaittime.
TEST #5 SPDL 71
WAIT 0010 SECS
Figure12Figure13isalwaysdisplayedduringtheactualtest,aftertheaforementionedpreparationstepshavebeencompleted.Duringthisportionofthetest,dataiscontinuouslysentouttheserial(RS-232port)locatedontherearpaneloftheinstrument.ThisdataisforusewiththeaccompanyingEZ-Yieldsoftware.SeeSectionIII.6formoreinformationregardingthisdata.
TEST #5 SPDL 71
RUNNIN YIELD
Figure13IftheESCkeyispressedatanytimeduringtheyieldtestrun,thefollowingisdisplayed:
TEST TERMINATED
BY USER
Figure14Atthispoint,pressingtheENTERkeystartsthetestagainstartingfromwhicheverRunscreenisapplicable(Figures10through13).PressingtheESCkeyreturnsthedisplaytothatofFigure8,remindingyouwhichspindleshouldbeused.Whenthetestisallowedtoruntocompletion,oneofthefollowingscreens(Figures15through18)aredisplayed:Figure15isdisplayedwhentheyieldtestpasses.The%torqueandstress(inPa)atthepointofyieldaredisplayedalongwiththetemperature(in°C)attheconclusionoftest.
%=73.56 025.5C
YIELD=726.36 Pa
Figure15Figure16isdisplayedwhentheyieldtestfailsduetoanover-rangeerror(seeSectionII.6.2).

BrookfieldEngineeringLabs.,Inc.Page11ManualNo.M/02-215
YIELD ERROR
OVER-RAN E
Figure16Figure17isdisplayedwhentheyieldtestfailsduetoanunder-rangeerror(seeSectionII.6.2).
YIELD ERROR
UNDER-RAN E
Figure17Figure18isdisplayedwhentheyieldtestfailsduetotheresultantyieldstressexceedingtheuserdefinedlimits.Thelimitingvaluecausingthefailedtest(highorlowyieldstress)isdisplayedinthefirstfieldtotherightoftheYLD:whiletheresultantyieldstressmeasuredduringthetestisthesecondfield.
LIMITS EXCEEDED
YLD:200 (726.36)
Figure18Afterscreen15through18isdisplayed,pressingtheESCkeyreturnsthescreentoFigure8.Atthispoint,afterensuringtheappropriatespindleisattached,theENTERkeycanbepressedtorunthetestagain.PressingtheENTERkeywhenanyofthesescreensisdisplayedimmediatelyrunsthetestagainanddisplaysthefirstappropriateRunscreen(Figures10through13).When
the test is complete, the results are sent out of both the parallel and serial (RS-232) ports.
II.4DataOutputII.4.1Pre-TestOutputWhenatestisbegun,thefollowinginformationissentoutboththeparallelandserial(RS-232)portsintheformatshownwitheachlineterminatedbyaCR/LF:Date:................................................................SampleInformation:................................................................Operator:................................................................M
odel:RVYD1:Spindle:71/001YD2:Pre-shear(rpm/secs):0.1/0010YD3:Zero(rpm):0.05YD4:WaitTime(secs):0010YD5:RunSpeed(rpm):0.4YD6:BaseInc.(msec):0200YD7:TorqueRed.(%):020YD8:Under-RangeRed.(%):050YD9:Average(readings):05YDA:Limits(Low/High)(Pa):00200/01000BaseInc.Cal.(%):1.55Temperature(
° C):25.5TestName:SampleTstSlotNumber:01

BrookfieldEngineeringLabs.,Inc.Page12ManualNo.M/02-215NOTES:1)TheBaseInc.Cal.(BaseIncrementCalibration)numberisthechangeintorqueexpectedfortheBaseInc.(BaseIncrement)selectedusingthecalibrationdatastoredintheinstrument.2)TheYDxvaluesareforusewiththeEZ-Yieldsoftwareandcanbeignored.II.4.2Post-TestOutputAttheconclusionofthetest,oneofthefollowingsix(6)messagesissentoutboththeparallelandserial(RS-232)ports:1.Test(#testnumber:testname)CompleteYieldStress(Pa)=196.53%Torque@Yield=78.6Temperature=25.5CTestPassed2.Test(#testnumber:testname)CompleteTestFailed=Under-range(displayediftestfailsduetoanunder-rangecondition;seeSectionII.6.2)3.Test(#testnumber:testname)CompleteTestFailed=Over-range(displayediftestfailsduetoanover-rangecondition;seeSectionII.6.2)4.Test(#testnumber:testname)CompleteYieldStress(Pa)=196.53%Torque@Yield=78.6Temperature=25.5CTestFailed=YieldStressBelowLowLimit(displayediftestfailsduetoresultantyieldstressbeingbelowlowlimit;seeSectionII.6.2)5.Test(#testnumber:testname)CompleteYieldStress(Pa)=196.53%Torque@Yield=78.6Temperature=25.5CTestFailed=YieldStressAboveHighLimit(displayediftestfailsduetoresultantyieldstressbeingabovehighlimit;seeSectionII.6.2)6.Test(#testnumber:testname)CancelledTestFailed=CancelledByUser(displayediftestfailsduetocancellationbytheuser)II.5PrintingAProgramAfterselectingPRINT TEST (bypressingtheENTERkeywithPRINT TEST flashingonthebottomline)fromtheDefaultScreen(Figure6),thefollowingisdisplayed:
#X yyyyyyyyyy
PRINT TEST

Figure19Note:Whilethetoplineistheactiveselectionline,theprogramnumberandnamewillbeflashingandtheandkeyswillbedisplayedtotherightoftheprogramname.Pressingtheorkeyscrollsthroughtheprogramnumbers(0-9)anddisplaysthecorrespond-ingprogramname.Whilescrolling,ifthememorylocationscrolledtohasnoprograminit,EMPTY isdisplayedandpressingtheENTERkeyhasnoeffect.PressingtheESCkeywiththisscreendisplayedcausesthescreeninFigure6toagainbedisplayed(i.e.gobackonelevel).PressingtheENTERkeywithavalidprogramselecteddisplaysthefollowingscreen:

BrookfieldEngineeringLabs.,Inc.Page13ManualNo.M/02-215
PREPARE PRINTER
PRESS ENTER
Figure20PressingtheENTERkeyatthisscreencausestheselectedprograminformationtobesentouttheparallelprinterport(locatedontherearpaneloftheinstrument).PressingtheESCkeyatthisscreenreturnsthedisplaytothatofFigure19.Note:Nohandshakingwiththeprinterisperformed(i.e.theinstrumentsimplysendsthedataassumingtheprinterisreadytoacceptit).PressingtheENTERkeyalsorecordstheprogramnumberbeingprintedsothatitwillbethefirstprogramshownthenexttimePRINT TEST isselectedfromtheDefaultScreen(Figure6).Afterprintingiscomplete,thescreenreturnstothedisplayshowninFigure19.Note:Printingcanonlybeaccomplishedusingtheparallelprinterport.Theserialport(RS-232)isstrictlyusedfordownloadingprogramsand/orcollectingyielddatausingtheaccompanyingEZ-Yieldsoftware.Testprogramsareprintedinthefollowingformat:ProgramNumber/Name:#5/SampleTstOperator:Date:SpindleNumber:71Multiplier:002PreparationParametersPre-ShearSpeed(rpm):10Pre-ShearTime(sec):0030ZeroSpeed(rpm):0.2WaitTime(sec):0010RunParametersRunSpeed(rpm):0.5BaseIncrement(msec):0100TorqueReduction(%):100Under-rangeReduction(%):015Average(readings):05

BrookfieldEngineeringLabs.,Inc.Page14ManualNo.M/02-215II.6TestResultsII.6.1TestPassedWhenayieldtestrunssuccessfully,theresultantYieldStress(Pa),the%TorquevalueatthetimeoftheyieldandtheTemperatureatyieldareprinted.Test(#5:SampleTst)CompleteYieldStress(Pa)=726.36%Torque@Yield=73.56Temperature=25.5CInaddition,theresultsareshownonthedisplayasfollows:
%=73.56 025.5C
YIELD=726.36 Pa
Figure21II.6.2TestFailedSomeofthereasonsayieldtestmayfailareasfollows.II.6.2.1Under-RangeConditionOnlyyieldmeasurementsinthe%Torquerangefrom10%to100%willbeaccepted.IfaYieldStressisreachedbeforethe%Torquevalueis10%,anUnder-Rangeerrorcausesthetesttoend.Thefollowingissenttoanattachedprinter:Test(#5:SampleTst)CompleteTestFailed=Under-rangeThefollowingscreenisdisplayed:
YIELD ERROR
UNDER-RAN E
Figure22II.6.2.2Over-RangeConditionOnlyyieldmeasurementsinthe%Torquerangefrom10%to100%willbeaccepted.IfYieldStressisnotreachedbeforethemeasured%Torquevaluereaches100%,anOver-Rangeerrorcausesthetesttoend.Thefollowingissenttoanattachedprinter:Test(#5:SampleTst)CompleteTestFailed=Over-rangeThefollowingscreenisdisplayed:
YIELD ERROR
OVER-RAN E
Figure23

BrookfieldEngineeringLabs.,Inc.Page15ManualNo.M/02-215II.6.2.3User-DefinedLimitConditionWhenanupperandlowerlimithasbeenimposedupontheYieldStressbytheuser,anyresultingYieldStressthatfallsoutsidetheselimitscausesthetesttofailwithaLimitViolationCondition.Oneofthefollowingmessagesissenttotheattachedprinterdepen-dentuponwhichlimitwasviolated:LowLimitViolationTest(#5:SampleTst)CompleteYieldStress(Pa)=196.53%Torque@Yield=27.4Temperature=250.5CTestFailed=YieldStressBelowLowLimitHighLimitViolationTest(#5:SampleTst)CompleteYieldStress(Pa)=996.53%Torque@Yield=78.6Temperature=250.5CTestFailed=YieldStressAboveHighLimitThefollowingscreen,showingfirsttheviolatedlimitvaluefollowedbytheresultingYieldStress,isdisplayed:
LIMITS EXCEEDED
YLD:800 (996.53)
Figure24II.6.2.4TestCancelledByUserWhenatestiscancelledbytheuser,eitherbypressingtheESCkeyduringarunningtestorbycancelingthetestviatheEZ-Yieldsoftware(SeeSectionII.4.6),thefollowingissenttotheattachedprinter:Test(#testnumber:testname)CancelledTestFailed=CancelledByUserThefollowingscreenisdisplayed:
TEST TERMINATED
BY USER
Figure25

BrookfieldEngineeringLabs.,Inc.Page16ManualNo.M/02-215III.EZ-YIELDSOFTWAREBrookfieldEZ-Yieldsoftwareisa32-bitWindowsprogramsuppliedwitheveryYR-1YieldRheometer.III.1EZ-YieldOverviewEZ-Yieldprovidesthefollowingfeatures:•EZ-Yieldallowsyoutoeasilycreateayieldtestanddownloadittooneoftheten(10)memorylocationsintheYR-1Rheometer.TheseprogramsareretainedinmemorysothattheYR-1canbedisconnectedfromthePCandusedinremotelocations(i.e.inaQ.C.laboratory,theproductionfloor,etc.).TestprogramscanbesavedandprintedfromthehostPC.•EZ-YieldcollectsallthedatafromayieldtestruninadditiontothefinalYieldStress.Thisdatacanbesaved,printed,andgraphedusingthesoftware.III.2EZ-YieldQuickStart1.EnsuretheYR-1ispoweredonandreadytoaccepttestprograms(SeeSectionII–GettingStarted).2.Ensuretheappropriateserial(RS-232)cable(BrookfieldPart#DVP-80)isconnectedtotheserialportoftheYR-1andaserialport(COMport)onthehostPC.3.StarttheEZ-Yieldsoftwareinoneofthefollowingmanners:•Clickonitsassociatedicon.•ClicktheWindowsStartbutton.SelectRun.Enterthename“ezyield.exe”oftheprogram(includingpath)andclickOKtoexecuteEZ-Yield.4.OnceEZ-Yieldisrunning,settheCOMPortsettingonthetoolbartotheappropriateCOMport.5.ClickontheTestParameterstabbeneaththetoolbar.SelecttheappropriatevaluesforallthetestparameterslistedattheleftoftheTestParameterpage.SeeSectionIII.3formoreinformationregardinghowtoselectTestParameters.SavethetestparametersifdesiredbyclickingtheSavebuttonorbyclickingSaveontheFilemenu.6.ClicktheDownloadbuttononthetoolbarorclickDownloadProgramintheUtilitymenu.7.EnsuretheappropriatespindleisattachedtotheYR-1andthatthesampleisproperlyprepared.8.ClickthedownarrowontheRunbuttonorclickRunProgramontheUtilitymenu.Selecttheprogramnumberyouwishtorun,inthiscase,theProgramNumberspecifiedinthelistofTestParameters.9.Afterafewseconds,theGraphspageisautomaticallydisplayedsignalingthatthetesthasbegun.Oncealloptionalpreparationstepsarecomplete,theYR-1beginssendingdatatotheEZ-YieldsoftwareanddisplayingitonthegraphandinthedatatableontheDatapage.10.Whenthetestiscomplete,adialogboxappearsaskingyoutosavethedatajustacquired.

BrookfieldEngineeringLabs.,Inc.Page17ManualNo.M/02-215III.3TestParameterDescriptionIII.3.1 Program Number
ThisisthenumberofthememoryslotintheYR-1Rheometertowhichthetestparameterswillbeloaded.Thereareten(10)slots,numberedfrom0through9.III.3.2ProgramNameThisdescriptiveuser-suppliednameisloadedintothememoryslotintheYR-1Rheometerwiththetestparameters.Amaximumoften(10)alphanumericcharactersmaybeusedforthisname.III.3.3SpindleSpindleNumberAtwo(2)digitcoderepresentingthespindlenumberusedforthetestmustbeselected.SeeAppendixAformoreinformationregardingspindlesforusewiththeYR-1Rheometer.Selectionoftheappropriatespindleisimportanttoensureappropriatestresscalculations.ImmersionMarkEachvanespindlehastwo(2)immersionmarks.Theprimaryimmersionmarkislocatedonthespindleshaft.Normally,thespindleshouldbeinsertedsothatthesamplereachesthismark.Ifthesamplecontaineristoosmalltoallowthespindletobeinsertedtothismark,thesecondaryimmersionmarkmaybeused.Thismarkappearshalfwaydownthebladesofthevanespindles.SeeAppendixAformoreinformationregardingspindlesandimmersionmarks.Note:Selectionoftheappropriateimmersionmarkisimportanttoensureappropriatestresscalculations.III.3.4Pre-ShearInformationAnoptionalPre-Shearstepcanbeincludedinthetestparameters.IfthePre-ShearboxischeckedontheTestParameterpageoftheEZ-Yieldsoftware,apre-shearstepwillbeperformedbeforerunningtheactualtest.Theusermustsupplythespeedanddurationofthepre-shearstep.SeeAppendixBforacompletelistofpre-shearspeeds.III.3.5ZeroAnoptional,buthighlyrecommended,torqueZerostepcanbeincludedinthetestparameters.IftheZeroboxischeckedontheTestParameterpageoftheEZ-Yieldsoftware,therheometerwillrotatethespindleintheappropriatedirectionuntil0%torqueisachieved.Thisstepgivesaconsistentstartingpointforeachtest.Aspeedforthestepmustbesuppliedintheappropriatebox.Fasterspeedsachievea“zero”quickerbutcauseamorevariablestartingpoint.SeeAppendixBforacompletelistofzerostepspeeds.III.3.6WaitTimeAnoptionalWaitstepcanbeincludedinthetestparameters.IftheWaitTimeboxischeckedontheTestParamterspageoftheEZ-Yieldsoftware,justbeforetheactualtestrunbegins,therewillbeatimedelayoftheamountspecified.Duringthisdelay,thespindlewillbeatzero(0)RPM.
PrimaryImmersionMarkSecondaryImmersionMark

BrookfieldEngineeringLabs.,Inc.Page18ManualNo.M/02-215III.3.7RunSpeedThespeedatwhichtheactualyieldtestisrun.AfteranyPre-shear,Zero,andWaittimesteps,theYR-1motorshaftbeginstoturnatthisspeed.SeeAppendixBforacompletelistofrunspeeds.III.3.8BaseIncrementThisvalueisthetimeinterval,inmilliseconds,atwhichdataistakenbytherheometer.This%torquedataisusedtodeterminewhenayieldpointisreached.ThisvalueisautomaticallycalculatedbytheEZ-YieldsoftwareanddependsontheRunSpeedselected.Althoughthisvalueiscalculated,itcanbealteredifthereisacompellingneedtodoso.IftheBaseIncrementhasbeenmanuallyalteredforanyreason,selectinganewRunSpeedautomaticallyresetstheBaseIncrementtoitsoptimumvalue.III.3.9 Torque Reduction
Thisparameterdeterminesatwhatpointthetestends.Generally,thisvalueissetfor100%.Avalueof100%causesthetesttoendwhenthedeltatorque(changeinmeasuredtorquebetweenconsecutivereadings)becomeszero(0).Inatypicalyieldtest,thedeltatorquereadingswillbesteadyuntilthesamplebeginstoyield,indicatedbydecreasingdeltatorquevalues.Whenthedeltatorquedropstozero(0)(i.e.achangeof100%fromthepreviousdeltatorque),thetestiscomplete.Valuesgreaterthan100%willcausethetesttocontinueafterthis“levelingoff”pointisreached.ThisoccurswhendeltatorquevaluesdecreasefurtherbyanamountcommensuratewiththepercentagetheTorqueReductionwasabove100%(Ex:avalueof110waitsforthe“levelingoff”at100%,thencontinuesuntiltheadditionaldecreaseindeltatorqueis10%).III.3.10LowandHighYieldLimitsThesevalues(inPa)canbeusedasaQualityControltool.Iftheresultingyieldstressfromatestfallsoutsidetheselimits,anappropriatemessageisdisplayedandprintedwiththeresults.Enteringzero(0)forboththeseparametersdisablesthisQCfeature.III.4ToolbarandMenuOptionsNote:Allfunctionsshownonthetoolbarcanalsobeaccessedfromthemenuabovethetoolbar.III.4.1 New
SelectingNew(usingtheNewbuttonortheNewoptionintheFilemenu)displaystheTestParameterspagewithdefaultvaluesineachfield.Usethisfunctionbeforecreatinganewtestprogram.

BrookfieldEngineeringLabs.,Inc.Page19ManualNo.M/02-215III.4.2 Open
SelectingOpen(usingtheOpenbuttonortheOpenoptionintheFilemenu)displaystheOpenFiledialogbox.
BELgpktest.DBsyruphairgel#1.DBchocolatesyrup#1.DBsyruphairgel#2.DBchocolatesyrup#2.DBhairgel#3.DBchocolatesyrup#3.DBhairgel#4.DBchocolatesyrup#4.DBpetroleumjelly#1.DBketchup#1.DBpetroleumjelly#2.DBketchup#2.DB
TheOpenFiledialogboxautomaticallydisplaysfilesofthetypeitthinkstheuserrequires;i.e.iftheTestParameterspagewasdisplayed,thefiletypesdisplayedaretestparameterfiles(*.BYT)andiftheDataorGraphpagesweredisplayed,thefiletypesdisplayedaredatafiles(*.DB).Regardlessofthefiletypesinitiallydisplayed,eithertypeoffilecanbeloadedbyselectingthedesiredtypeatthebottomoftheOpenFiledialogusingtheFilesoftypedropdownlist.III.4.3SaveSelectingSave(usingtheSavebuttonortheSaveoptionintheFilemenu)displaystheSaveFiledialogbox.
BELgpktest.DBsyruphairgel#1.DBchocolatesyrup#1.DBsyruphairgel#2.DBchocolatesyrup#2.DBhairgel#3.DBchocolatesyrup#3.DBhairgel#4.DBchocolatesyrup#4.DBpetroleumjelly#1.DBketchup#1.DBpetroleumjelly#2.DBketchup#2.DB
TheSaveFiledialogboxautomaticallydisplaysfilesofthetypeitthinkstheuserrequires(i.e.IftheTestParameterspagewasdisplayed,thefiletypesdisplayedaretestparameterfiles(*.BYT)andiftheDataorGraphpagesweredisplayed,thefiletypesdisplayedaredatafiles.).Regardlessofthefiletypesinitiallydisplayed,eithertypeoffilecanbesavedbyselectingthedesiredtypeatthebottomoftheSaveFiledialogusingtheFilesoftypedropdownlist.

BrookfieldEngineeringLabs.,Inc.Page20ManualNo.M/02-215III.4.4PrintSelectingPrint(usingthePrintbuttonorthePrintoptionintheFilemenu)displaysaPrintPreviewwindow.Oncethiswindowisdisplayed,clickingthePrintbuttonsendsthereporttotheselectedprinter.Thefunctionsofthebuttonsonthetoolbararedescribedbelow:ZoomToFitDisplaysacompletepageofthereportinthewindow.Textandgraphicsareshrunksothatacompletepagewillfitonthescreen.ZoomTo100%Increasesthesizeofalltextandgraphicssothattheyaredisplayedat100%oftheiractualsize.ZoomToWidthDisplaysapagesothatthecompletewidthofthepagefitsonthescreen.FirstPageDisplaysthefirstpageofthereport.PreviousPageDisplaysthepreviouspageofthereport.NextPageDisplaysthenextpageofthereport.LastPageDisplaysthelastpageofthereport.PrinterSetupDisplaysthestandardWindowsPrintSetupdialogbox.Fromthisdialogbox,atargetprintercanbechosenanditssettingscanbealteredbeforeprinting.PrintSendsthereporttotheselectedprinter.