Brookfield DV3T Rheometer Instrukcja Użytkownika Pobierz pdf (Strona 51)

Brookeld Engineering Labs., Inc. Page 51 Manual No. M13-2100

The Default Temperature is the temperature value that the control device will return to at the

conclusionoftheTest.Thisvalueissetonlyifthecheckboxischecked.Whenthecheckboxis

uncheckedthetemperaturecontrollerwillholdatthelastsetpointusedintheTest.

TIP:Whenatestinvolvesseveraltemperaturesetpoints,settheDefaultTemperaturetotherst

setpointusedintheTest.ThiswillreducethetransitiontimefromoneTestruntothenext

Testrun.

IV.5 Test Parameters

TheCongureYieldTestscreenincludesseveralparameterstospecifythetestmethod;Spindle,

ImmersionMark,Pre-ShearSpeed,Pre-ShearTime,ZeroSpeed,WaitTime,RunSpeed,Torque

Reduction,andTemperature.TherequiredparametersareSpindle,ImmersionMark,RunSpeed

andTorqueReduction.AllotherparametersareoptionalincludingthoseshownbelowtheMore/

Lessbar;YieldLimit,Instructions,SavePath.

Spindle

Spindle Number

Atwo(2)digitcoderepresentingthespindlenumberusedforthetestmustbeselected.See

AppendixAformoreinformationregardingspindlesforusewiththeDV3TRheometer.Selection

oftheappropriatespindlecodeisimportanttoensurecorrectstresscalculations.Brookeld

recommendstheuseofvanespindlesforyieldmeasurements.

Immersion Mark

Eachvanespindlehastwo(2)immersionmarks.Theprimaryimmersionmarkislocatedon

thespindle shaft. Normally,the spindleshouldbe insertedsothat thesamplereaches this

mark.Ifthesamplecontaineristoosmalltoallowthespindletobeinsertedtothismark,the

secondaryimmersionmarkmaybeused.Thismarkappearshalfwaydownthebladesofthe

vane spindles. See Appendix D for more information regarding spindles and immersion marks.

Primary

Immersion

Mark

Secondary

Immersion

Mark

Figure IV-5

Note: Selection of the appropriate immersion mark is important to ensure

correct stress calculations.

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Brookfield DV3T Rheometer Instrukcja Użytkownika Strona 51