Brookfield DV2T Viscometer Bedienungsanleitung PDF herunterladen (Seite 78)

Brookeld Engineering Labs., Inc. Page 78 Manual No. M13-167-B0614

SmallSampleAdapter,ULAdapter,Thermosel,SpiralAdapter,andDINAdapter,the

accuracyvaluemaybeincreased.Ingeneraltheincreaseinaccuracywillbeminimal,

however,itcouldbeasmuchas1%foratotalaccuracyof+/-2%oftherangeinuse.

BrookeldViscosityStandardsFluidsareaccurateto(+/-)1%oftheirstatedvalue.

Example:

 CalculatetheacceptablerangeofviscosityusingDV2TRVwithRV-3Spindle

at2RPM;BrookeldStandardFluid12,500withaviscosityof12,257cP

at25°C:

1) Calculatefullscaleviscosityrangeusingtheequation:

Full Scale Viscosity Range [cP] = TK

SMC

10,000

RPM

Where:

TK-1.0fromTable D-2

SMC=10fromTable D-1

Full Scale Viscosity Range

10,000

50,000 cP

 Theviscosityisaccurateto(+/-)500cP(whichis1%of50,000)

2) Theviscositystandarduidis12,257cP.Itsaccuracyis(+/-)1%of12,257or

 (+/-)122.57cP.

3) Totalallowableerroris(122.57+500)cP=(+/-)622.57cP.

4) Therefore,any viscosityreading between11,634.4and12,879.6 cP indicatesthat

theViscometerisoperatingcorrectly.Anyreadingoutsidetheselimitsmayindicatea

Viscometerproblem.ContacttheBrookeldtechnicalsalesdepartmentoryourlocal

Brookelddealer/distributorwithtestresultstodeterminethenatureoftheproblem.

Example:

Calculate the acceptable accuracy for viscosity measurement using

DV2TLVwithSC4-21spindleinSmallSampleAdapterat6,12,and30

RPM.Brookeldviscositystandarduid100cPshasanactualvalueof

101.5 cP at 25ºC.

1) CalculatethefullscaleviscosityrangeeitherbyusingtheSpindleRangeCoefcient

inAppendixBofMoreSolutionstoStickyProblemsorbyusingtheAutoRangebutton

on your viscometer.

 TheSpindleRangeCoefcientforthe21spindleonanLVTorqueinstrumentis

4,688.

 At6RPM,theFullScaleRange(FSR)viscosityis781cP.Allow+/-1%forthe

viscometerand+/-1%fortheSmallSampleAdapter.Totalallowableaccuracyis:

  +/-2%x781cP=+/-15.6cP

 Asimilarcalculationat12RPMgivesFSR=391cP:+/-2%x391cP=+/-7.8cP

 Asimilarcalculationat30RPMgivesFSR=156cP:+/-2%x156cP=+/-3.1cP

1 2 ... 73 74 75 76 77 78 79 80 81 82 83 ... 94 95

Kommentare zu diesen Handbüchern

Sachin Vaijanath Ashture 05 Mar 2025 | 15:48:33

It's good information

Brookfield DV2T Viscometer Bedienungsanleitung Seite 78

Kommentare zu diesen Handbüchern

Verwandte Produkte und Handbücher für Messgeräte Brookfield DV2T Viscometer