Brookfield DV3T - I. INTRODUCTION

Brookeld Engineering Labs., Inc. Page 5 Manual No. M13-167-A0415
I. INTRODUCTION
TheBrookeldDV-IIIRheometerserieshasbeentheleadingindustrialrheometersinceitwasrst
introducedin1989.BrookeldhascontinuedtodevelopandimprovetheDV-IIItoprovidethebest
valueinthemarketforbothqualitycontrolandresearchcustomers.TheBrookeldDV3TRheometer
continuesinthistraditionofinnovation,qualityandvalue.Theincorporationofafullcolorgraphical
touchscreendisplayhasallowedforanewandimproveduserinterfacewhichpreservesthesingle
speeddatacollectionmethodswhilemakingalloftheadvancedfeaturesoftheDV3Treadilyavailable.
TheBrookeldDV3TRheometermeasuresuidviscosityatgivenshearrates.Viscosityisameasure
ofauid’sresistancetoow.Youwillndadetaileddescriptionofthescienceofviscosityinthe
Brookeldpublication“More Solutions to Sticky Problems”,acopyofwhichwasincludedwithyour
DV3T.
ThismanualcoverstheDV3TRheometerandtheDV3TExtraRheometer.TheDV3TExtraisaspecial
packagethatincludesseveraloptionalfeaturestomaximizetheutilityoftheDV3T.TheDV3TExtra
includes:BallBearingSuspension(notincludedinLVversions),EZ-Lockspindleconnection,Model
QLabStand,andRheocalcTSoftware.ThesedifferencesaredetailedintheComponentssectionof
themanual.AllreferencestotherheometerinthismanualwillbemadeasDV3T.Alloftheoptional
featuresoftheDV3TExtramaybeaddedindividuallytotheDV3TRheometer.
TheDV3Toffersexceptionalversatilityinmodesofcontrol,allowingchoiceoftraditionalstandalone
operationandautomaticoperationthroughprogramsdownloadedfromthePCorwithcompletecontrol
byPCusingBrookeldRheocalcTSoftware.
• TheDV3TcanbeusedasatraditionalBrookeldrheometerforcollectionofsinglespeed
viscositydatathroughtheeasytousetouchscreen;justselectthespindleandspeedandread
thevaluefromthedisplay. [See Section II: Getting Started]
• TheDV3Tcancollectmultipledatapointsthroughprogramscreateddirectlyonthe
touchscreendisplay.
• TheDV3Tcanmakeadirectmeasurementofyieldstresswhenusingoptionalvanespindles.
• TheBrookeldPGFlashSoftwarecanbeusedtoprogramtheDV3Ttocontrolallaspectsof
thetestanddatacollectionwithouttheneedfortheoperatortomonitortheinstrument;just
starttheprogramandreturntotheprintedtestdata(printerisoptional).[See Section V: PG
Flash Software]
• TheBrookeldRheocalcTSoftwarewillperformallcontrolanddatacollectionfunctions
oftheDV3TfromthePCwhilealsoprovidingaplatformforadvanceddatacollectionand
analysis.
Inanyofthesemodesofcontrol,theDV3Twillprovidethebestinviscositymeasurementandcontrol.
Theprincipalof operation oftheDV3Tistodrivea spindle (which isimmersedinthe test uid)
throughacalibratedspring.Theviscousdragoftheuidagainstthespindleismeasuredbythespring
deection.Springdeectionismeasuredwitharotarytransducer.ThemeasurementrangeofaDV3T
(incentipoiseormilliPascal
•
seconds)isdeterminedbytherotationalspeedofthespindle,thesizeand
shapeofthespindle,thecontainerthespindleisrotatingin,andthefullscaletorqueofthecalibrated
spring.
TherearefourbasicspringtorqueseriesofferedbyBrookeld:
Spring Torque
Model dyne•cm milliNewton•m
DV3TLV 673.7 0.0673
DV3TRV 7,187.0 0.7187
DV3THA 14,374.0 1.4374
DV3THB 57,496.0 5.7496
Thehigherthetorquecalibration,thehigherthemeasurementrange.Themeasurementrangeforeach
torquecalibrationmaybefoundinAppendixB.
All units of measurement are displayed according to either the CGS system or the SI system.