BROOKFIELD DV-II+ PROGRAMMABLE VISCOMETER Operating ...

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A.3 SETTING THE GAP1. Move the toggle switch to the right; this willturn on (enable) the Gap Setting Feature.The Pilot (red) light will be illuminated.2. If the contact light (yellow) is illuminated,turn the micrometer adjustment ring clockwise(as you look down on the instrument)until the light is no longer illuminated (seeFigure A5).3. If the yellow contact light is not illuminated,slowly turn the micrometer adjustment ringin small increments (one or two scale divisions)counter-clockwise.Continue moving the micrometer adjustmentring slowly counter-clockwise until thecontact light (yellow) first turns on. THISIS THE “HIT POINT.”Moves Awayfrom Hit Point(clockwise)LEFTxFigure A5Moves TowardsHit Point(counter-clockwise)RIGHT4. Adjust the sliding reference marker, right orleft, to the closest full scale division mark(see Figure A6).5. Turn the micrometer adjustment ring onescale division to the left to meet the line onthe sliding reference marker. THE YEL-LOW CONTACT LIGHT SHOULD GOOFF.6. You have established the gap space neededfor measurement. Now turn the toggleswitch OFF (left); the red pilot light shouldgo off.The viscosity of electrically conductive fluidsmay be affected if readings are taken with theElectronic Gap Setting feature “on”. Be sureto shut the feature “off” before takingreadings!Full ScaleDivision MarksFigure A6SlidingReferenceMarker7. Carefully remove the sample cup.Notes1. The cup may be removed and replaced without resetting the gap if the micrometer adjustmentring has not been moved.2. Remove the spindle from the viscometer when cleaning.3. Re-establish the hit point every time the spindle is attached/detached.Brookfield Engineering Labs., Inc. Page 44 Manual No. M/97-164-F1102
A.4 VERIFYING CALIBRATION1. Determine the appropriate sample volume.Refer to Table A6 to determine the correctsample volume required for the spindle tobe utilized.2. Select a Brookfield Viscosity Standard fluidthat will give viscosity readings between10% and 100% of full scale range. Refer toAppendix B for viscosity ranges of conespindles; ranges listed apply to CPE cones.ConePart No.CPE-40CPE-41CPE-42CPE-51CPE-52Table A1Sample Volume0.5 ml2.0 ml1.0 ml0.5 ml0.5 mlDo not use a silicone viscosity standard fluidwith a viscosity value greater than 5000 cPwith a Cone/Plate. Brookfield offers acomplete range of mineral oil viscositystandards suitable for use with Cone/Platesfor viscosities above 5,000 cP or shear ratesabove 500 sec -1 ; see Table E2 inAppendix E for a list of available fluids.It is best to use a viscosity standard fluidthat will be close to the maximum viscosityfor a given cone spindle/speed combination.Example:LV<strong>DV</strong>-<strong>II+</strong> Viscometer, ConeSpindle CPE-42, BrookfieldSilicone Viscosity Standardhaving a viscosity of 9.7 cP at25°CAt 60 RPM, the full scale viscosity range is10.0 cP. Thus, the Viscometer readingshould be 97% torque and 9.7 cP viscosity ±0.197 cP. The allowable error (±0.197 cP)is a combination of Viscometer accuracyand fluid tolerance (refer to Interpretationof Calibration Test Results inAppendix E).4. Attach the sample cup to the Viscometerand allow sufficient time for thesample, cup and cone to reach temperatureequilibrium.5. Turn the motor on. Set the desiredspeed(s). Measure the viscosity andrecord the reading in both % torqueand centipoise (cP).Note: The cone spindle must rotateat least five (5) times before a viscosityreading is taken.6. Verify that the viscosity reading iswithin the allowable 1% deviation, asexplained earlier, for the specificviscosity standard fluid(s) that you areusing.* The CPE designation on the conespindle indicates use with ElectronicGap Setting Cone/Plate Viscometers/Rheometers only.3. With the motor off, remove the sample cupand place the viscosity standard fluid intothe cup.Brookfield Engineering Labs., Inc. Page 45 Manual No. M/97-164-F1 102
Page 1 and 2: BROOKFIELD DV-II+PROGRAMMABLE VISCO
Page 4 and 5: I.1 ComponentsComponent Part Number
Page 6 and 7: I.4 InstallationNote: “IQ, OQ, PQ
Page 8 and 9: SELECTDISPLAYSELECT DISPLAYSelects
Page 10 and 11: II.GETTING STARTEDII.1AutozeroBefor
Page 12 and 13: II.3SETSPEED Speed Selection, Setti
Page 14 and 15: SR 40.0 20.1C6.0RPM % 15.6Figure 13
Page 16 and 17: II.7 Temperature DisplayThe DV-II+
Page 18 and 19: Non-Newtonian fluid behavior can re
Page 20 and 21: OPTIONSTABOPTIONS/TAB - Toggles bet
Page 22 and 23: L°F(FAHRENHEIT)CGS UNITSL°C(CENTI
Page 24 and 25: III.2.3.2 Custom SpeedsPressing the
Page 26 and 27: III.3.1 Time to StopOn entry, the u
Page 28 and 29: standard print string to the attach
Page 30 and 31: However, upon starting the timed op
Page 32 and 33: Refer to Section IV for information
Page 34 and 35: CP 123.4 55.1C10 RPM PGM% 63.7Figur
Page 36 and 37: IV.2 Description of B.E.V.I.S. Comm
Page 38 and 39: Figure 67 shows the grid where the
Page 40 and 41: IV. 5 Example ProgramsThe following
Page 42 and 43: Appendix A - Cone/Plate Viscometer
Page 46 and 47: Appendix B - Viscosity RangesViscos
Page 48 and 49: The second consideration involves t
Page 50 and 51: container wall and the spindle surf
Page 52 and 53: Table D1 (continued)SC4-14 14 125 0
Page 54 and 55: Appendix E - Calibration Procedures
Page 56 and 57: 4) Allow 30 minutes for the viscosi
Page 58 and 59: Interpretation of Calibration Test
Page 60 and 61: many viscometer users the true visc
Page 62 and 63: Appendix G - CommunicationsWhen usi
Page 64 and 65: DV-II+Serial and Analog OutputsNo C
Page 66 and 67: UnpackingCheck carefully to see tha
Page 68 and 69: Appendix J - Fault Diagnosis and Tr
Page 70 and 71: ❏ No Recorder Response✓ Be Sure
Page 72 and 73: Appendix K - Warranty Repair and Se
Page 74 and 75: Providing us with the following inf

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