Brookfield DV3T - Calibration Procedure for LV #1-3 (#61-63) and RV, HA, HB #1-6 Brookfield Spindles

Brookeld Engineering Labs., Inc. Page 106 Manual No. M13-167-A0415
BrookeldViscosityStandardFluidGeneralInformation
WerecommendthatBrookeldViscosityStandardFluidsbereplacedonanannualbasis,one
yearfromdateofinitialuse.Theseuidsarepuresiliconeandarenotsubjecttochangeover
time.However,exposuretooutsidecontaminantsthroughnormaluserequiresreplacementon
anannualbasis.Contaminationmayoccurbytheintroductionofsolvent,standardofdifferent
viscosityorotherforeignmaterial.
ViscosityStandardFluidsmaybestoredundernormallaboratoryconditions.Disposalshouldbe
inaccordancewithstate,localandfederalregulationsasspeciedonthematerialsafetydatasheet.
BrookeldEngineeringLaboratoriesdoesnotrecertifyViscosityStandardFluids.Wewillissue
duplicatecopiesoftheCerticateofCalibrationforanyuidwithintwoyearsofthepurchase
date. BrookeldViscosity StandardFluids are reusableprovided they arenot contaminated.
Normalpracticeforusageina600mLbeakeristoreturnthematerialfromthebeakerbackinto
thebottle.WhenusingsmallervolumesinaccessoriessuchasSmallSampleAdapter,ULAdapter
orThermosel,theuidisnormallydiscarded.
CalibrationProcedureforLV#1-3(#61-63)andRV,HA,HB#1-6BrookeldSpindles
Please note that the LV #4 (64) and RV, HA, HB #7 (07) spindles have been omitted from this
procedure.Brookelddoesnotrecommendtheuseofthesespindlestoperformacalibration
check on your instrument. Reasons pertain to the small amount of spindle surface that
makescontactwiththeviscositystandard,thedifcultyofestablishingtheimmersionmark
precisely and the need for precise temperature control at 25°C in the immediate vicinity of
the spindle.
Followthesestepsusingoneoftherecommendedspindlestoverifycalibrationonyourinstrument:
1) Placetheviscositystandarduid(inthepropercontainer)intothewaterbath.
2) LowertheDV3Tintomeasurementposition(withguardlegifLVorRVseriesRheometer
isused).
3) AttachthespindletotheRheometer.Ifyouareusingadisk-shapedspindle,avoidtrapping
airbubblesbeneaththediskbyrstimmersingthespindleatanangle,andthenconnecting
ittotheRheometer.
4) Theviscositystandarduid,togetherwiththespindle,shouldbeimmersedinthebathfor
aminimumof1hour,stirringtheuidperiodically,priortotakingmeasurements.
5) After 1 hour, check the temperature of the viscosity standard uid with an accurate
thermometer.
6) Iftheuidisattesttemperature(±0.1°Cofthespeciedtemperature,normally25°C),
measuretheviscosityandrecordtheRheometerreading.
Note: The spindle must rotate at
least ve (5) times before readings are taken.
7) TheviscosityreadingshouldequalthecPvalueontheuidstandardtowithinthecombined
accuraciesoftheRheometerandtheviscositystandard(asdiscussedinthesection,atthe
endofthisAppendix,entitledInterpretationofCalibrationTestResults)whichappears
laterinthissection.