Brookfield DV3T Rheometer Manuel d'utilisateur télécharger pdf (Page 121)

Brookeld Engineering Labs., Inc. Page 121 Manual No. M13-2100

❏ Rheometer Will Not Return to Zero

✓ Rheometerisnotlevel

  • Checkwithspindleoutofthesample.

  • Adjustthelaboratorystand.

✓ Pivotpointorjewelbearingfaulty

  • PerformanOscillationCheck*

✓ RemovethespindleandturnthemotorOFF;selectdisplayto%torquemode.

✓ Gentlypushupontherheometercoupling.

✓ Turnthecouplinguntilthedigitaldisplayreads10-15onthe%display.

✓ Gentlyletgoofthecoupling.

✓ Watchthedigitaldisplay;youshouldseea“run”ofnumbersnexttothe%;the“run”of

numbersshouldultimatelystopat0.0(+/-0.1).

IfthedigitaldisplaydoesnotreturntoZERO,theunitmostlikelyisinneedofservice.

  • Performcalibrationcheck(seeAppendixE).

 • ContactBrookeldEngineeringLaboratories,Inc.oryourBrookelddealerforrepair(see

AppendixM).

*Thisproceduredoesnotapplytoinstrumentswithballbearingsuspension(seeSectionI.3).

❏ Display Reading Will Not Stabilize

✓ Specialcharacteristicofsampleuid.Thereisnoproblemwiththerheometer.

  • RefertoAppendixC.

✓ Checkforerraticspindlerotation.

  • Verifypowersupply

  • ContactBrookeldEngineeringLaboratories,Inc.oryourBrookelddealerforrepair.

✓ Bent spindle or spindle coupling.

  • ContactBrookeldEngineeringLaboratories,Inc.oryourBrookelddealerforrepair.

✓ Temperatureuctuationinsampleuid.

  • Usetemperaturebathforcontrol.

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Brookfield DV3T Rheometer Manuel d'utilisateur Page 121