Brookfield DV3T Rheometer Manual de usuario descargar pdf (Pagina 5)

Brookeld Engineering Labs., Inc. Page 5 Manual No. M13-2100

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.

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