Brookfield DV2T - I. INTRODUCTION

Brookeld Engineering Labs., Inc. Page 5 Manual No. M13-167
I. INTRODUCTION
TheBrookeldDV-IIViscometerserieshasbeentheleadingindustrialviscometersinceitwasrst
introducedin1985.BrookeldhascontinuedtodevelopandimprovetheDV-IItoprovidethebest
valueinthemarketforbothqualitycontrolandresearchcustomers.TheBrookeldDV2TViscometer
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DV2Treadilyavailable.
TheBrookeldDV2TViscometer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
DV2T.
ThismanualcoverstheDV2TViscometerandtheDV2TExtraViscometer.TheDV2TExtraisaspecial
packagethatincludesseveraloptionalfeaturestomaximizetheutilityoftheDV2T.TheDV2T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viscometerinthismanualwillbemadeasDV2T.Alloftheoptional
featuresoftheDV2TExtramaybeaddedindividuallytotheDV2TViscometer.
TheDV2T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DV2TcanbeusedasatraditionalBrookeldviscometer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BrookeldPGFlashSoftwarecanbeusedtoprogramtheDV2T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DV2TfromthePCwhilealsoprovidingaplatformforadvanceddatacollectionand
analysis.
Inanyofthesemodesofcontrol,theDV2Twillprovidethebestinviscositymeasurementandcontrol.
Theprincipalof operation oftheDV2T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DV2T
(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
DV2TLV 673.7 0.0673
DV2TRV 7,187.0 0.7187
DV2THA 14,374.0 1.4374
DV2THB 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.