Manual

Brookeld Engineering Labs., Inc. Page 76 Manual No. M13-167-B0614
WhenaULorDINULAdapterisused,thewaterbathisstabilizedatthepropertemperature:
1) PuttheproperamountofviscositystandarduidintotheULTube(refertothe
ULAdapterinstructionmanual).
2) Attachthespindle(withextensionlinkandcouplingnut)ontotheDV2T.
3) Attachthetubetothemountingchannel.
4) Lowerthetubeintothewaterbathreservoir,orifusingtheULA-40Ywaterjacket,
connecttheinlet/outletstothebathexternalcirculatingpump.
5) Allow30minutesforthe viscositystandard,samplechamberandspindle to
reachtesttemperature.
6) MeasuretheviscosityandrecordtheViscometerreading.
Note: The spindle must
rotate at least ve (5) times before readings are taken.
Calibration Procedure using a Helipath Stand and T-Bar Spindles
 WhenaHelipathStandandT-Barspindlesareused:
1) RemovetheT-barspindleandselectastandardLV(#1-3)orRV,HA,HB(#1-6)
spindle.FollowtheproceduresforLV(#1-3)andRV,HA,HB(#1-6)Brookeld
spindles outlined above.
2) T-Bar spindles should not be used for verifying calibration of the DV2T
Viscometer.
Calibration Procedure for Spiral Adapter
Brookeldrecommendsatwostepcheck.First,verifythecalibrationoftheviscometer
usingthestandard viscometer spindles(LV #1-3,RV#2-6, HA#2-6andHB #2-6or
cone/platespindles)asdetailedinthisappendix.Second,verifythecalibrationofthe
viscometerusingtheSpiralAdapter.Theuseofanaccessorydevicemayincreasethe
accuracyofmeasurementassociatedwiththeDV2T.
1) Placetheviscositystandarduid(inthepropercontainer)intothewaterbath
(refertotheSpiralAdapterinstructionmanual).
2) Attachthespindletotheviscometer.Attachchamber(SA-1Y)andclamptothe
viscometer.
3) LowertheDV2Tintomeasurementposition.Operatetheviscometerat50or
60RPMuntilthechamberisfullyooded.
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(operateat50or
60RPM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viscometerreading. Note: The spindle
must rotate at least ve (5) times for one minute, whichever is greater before readings are
taken.
7) TheviscosityreadingshouldequalthecPvalueontheviscosityuidstandard
to within the combined accuracies of the viscometer and the standard (as
discussed in the section entitled, Interpretation of Calibration Test Results).