Brookfield DV2+Pro Viscometer Instrukcja Użytkownika Pobierz pdf (Strona 24)

Brookeld Engineering Labs., Inc. Page 24 Manual No. M03-165-F0612

III. MAKING VISCOSITY MEASUREMENTS

III.1 Quick Start

The DV-II+Pro Viscometer uses the same methodology for viscosity measurements as the

BrookeldDialReadingViscometersandDVseriesofDigitalViscometers.Ifyouhave

experiencewithotherBrookeldequipment,thissectionwillgiveyouquickstepsfor

takingaviscosityreading.IfyouhavenotusedaBrookeldViscometerbefore,skipthis

section and go to Section III.2 for a detailed description.

A) Assemble and level viscometer (Section I.4)

B) Turn power on

C) Autozero the viscometer (Section II.1)

D) Enter the spindle number using the SELECT SPINDLE key (Section II.2).

E) Introduce the spindle into the sample and attach the spindle to the coupling nut.

NOTE: Left-hand threads. If equipped with EZ-Lock, use the appropriate

procedure to connect the spindle [see Section II.2].

F) Enter the speed of rotation using the number pad and ENTER key (Section II.3).

G) Record % torque and viscosity.

III.2 Preparations for Making Measurements

 A) VISCOMETER:The DV-II+Proshould beturned on,leveld andautozeroed.Thelevel is

adjustedusingthetwofeetonthebottomofthebaseandconrmedusingthebubbleonthe

top of the head. Adjust the feet until the bubble is inside the center target. Set the level prior

to autozero and check the level prior to each measurement.

The proper level is essential for correct operation of the DV-II+Pro.

 B) SAMPLE:Theuidtobemeasured(sample)mustbeinacontainer.Thestandardspindles

supplied with the DV-II+Pro [LV (1-4), RV (2-7), or HA/HB (2-7)] are designed to be used with

a600mLlowformGrifnbeaker(orequivalentcontainerwithadiameterof8.25cm).The

same applies to the optional RV1, HA/HB1, and Vane spindles. Many other spindle systems

aresuppliedfromBrookeldwithspecicsamplechamberssuchastheSmallSampleAdapter,

UL Adapter and Thermosel.

  Brookeldrecommendsthatyouusetheappropriatecontainerfortheselectedspindle.Youmay

choose to use an alternate container for convenience, however, this may have an effect on the

measuredviscosity.TheDV-II+Proiscalibratedconsideringthespeciedcontainer.Alternate

containers will provide results that are repeatable but not “true”.

The LV (1-4) and RV (1-7) are designed to be used with the guardleg attached. Measurements

made without the guardleg will provide repeatable results but may not provide “true” results.

When comparing data with others, be sure to specify the sample container and presence/

absence of the guardleg.

  Manysamplesmustbecontrolledtoaspecictemperatureforviscositymeasurement.When

conditioning a sample for temperature, be sure to temperature control the container and spindle

as well as the sample.

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Brookfield DV2+Pro Viscometer Instrukcja Użytkownika Strona 24