Brookfield DV3T Rheometer Manuale Utente Scaricare il pdf (Pagina 28)

Brookeld Engineering Labs., Inc. Page 28 Manual No. M13-2100

TwomultistepTestsareshownbelow.Thersttestshowsathreesteptestwhereeachstephasa

differentspeedwithasingledatapointcollection.Theresultswillincludethreeviscositypoints,

oneforeachspeed.Thesecondtestshowsatwosteptestwheretherststepisapreshearstep.

Thepreshearisconductedat200rpmforoneminuteandnodataiscollected.Thesecondstep

generates a single data point.

ThreeStepTest:

Figure III-2a: Step 1 Figure III-2b: Step 2

Figure III-2c: Step 3

TwoStepTest:

Figure III-3a: Step 1 Figure III-3b: Step 2

III.4 Selecting a Spindle/Speed

TheDV3Thasthecapabilityofmeasuringviscosityoveranextremelywiderange.Forexample,

theDV3TRVcanmeasureuidswithintherangeof100-40,000,000cP.Thisrangeisachieved

throughtheuseofseveralspindlesovermanyspeeds.SeeAppendixBfordetails.

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Brookfield DV3T Rheometer Manuale Utente Pagina 28