Brookfield LV Operating Instructions Manual
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Brookfield LV Operating Instructions Manual

Brookfield LV Operating Instructions Manual

Dial viscometer
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Please record the Model and Serial Number of your viscometer.
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should there be any questions regarding your instrument.
Brookfield Engineering Laboratories, Inc.
BROOKFIELD DIAL VISCOMETER
Operating Instructions
Manual No. M/85-150-N898
Model No. _____________________
Serial No. _____________________
BROOKFIELD ENGINEERING LABORATORIES, INC.
11 Commerce Boulevard, Middleboro, MA 02346-1031 USA
T
508-946-6200
or
EL
F
508-946-6262
I
AX
NTERNET
SPECIALISTS IN THE
MEASUREMENT AND
CONTROL OF VISCOSITY
800-628-8139 (USA excluding MA)
www.brookfieldengineering.com
Page 1
Manual No. M/85-150-N898

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  • Page 1 Model No. _____________________ Serial No. _____________________ SPECIALISTS IN THE MEASUREMENT AND CONTROL OF VISCOSITY BROOKFIELD ENGINEERING LABORATORIES, INC. 11 Commerce Boulevard, Middleboro, MA 02346-1031 USA 508-946-6200 800-628-8139 (USA excluding MA) 508-946-6262 www.brookfieldengineering.com NTERNET Brookfield Engineering Laboratories, Inc.
  • Page 3 ISO 9001 CERTIFIED If you’ve ever wanted to upgrade from your Brookfield analog/dial Viscometer to a new cal- culating (no factor finder), easy-to-use digital Vis- cometer... NOW IS THE TIME! By using your ex- This offer allows you to save $450! isting laboratory stand and spindles, you can purchase Model DV-E Viscometer for just $1,345.00!

  • Page 4: Table Of Contents

    APPENDIX E - Models A & A-E Laboratory Stand with Parts Identification ........... 29 APPENDIX F - Fault Diagnosis and Troubleshooting ......31 APPENDIX G - Warranty Repair and Service ........33 Brookfield Engineering Laboratories, Inc. Page 2 Manual No. M/85-150-N898...

  • Page 5: Introduction

    I. INTRODUCTION The Brookfield Dial Viscometer measures fluid viscosity at given shear rates. Viscosity is a measure of a fluid’s resistance to flow. You will find a detailed description of the mathematics of viscosity in the Brookfield publication “More Solutions to Sticky Problems” a copy of which was included with your Dial Viscometer.

  • Page 6: Utilities

    I.4 Set-Up Assemble the laboratory stand. (Refer to Appendix E.) Mount the Viscometer securely on a Brookfield laboratory stand. On some Viscom- eters, it may be necessary to unscrew the nut located at the point where the power cord enters the viscometer. This permits the metal handle to be inserted into the laboratory stand clamp.

  • Page 7: Getting Started

    LV Viscometers are provided with a set of four spindles and a narrow guard leg; RV Viscometers come with a set of seven spindles and a wider guard leg; HA and HB Viscometers come with a set of seven spindles and no guard leg.
  • Page 8 “More Solutions to Sticky Problems” and in Appendix C. The following table applies to Brookfield Viscometer Models LV, RV, HA and HB with standard spindles. It enables the user to convert to percent scale reading into a viscosity value in units of centipoise.
  • Page 9 Full scale viscosity range for any speed and spindle combination is equal to the factor x 100. Factor x 100 = Full scale range Example: LVT Viscometer with #1 spindle at 6 RPM Full Scale Range: 10 x 100 = 1,000 cP Brookfield Engineering Laboratories, Inc. Page 7 Manual No. M/85-150-N898...

  • Page 10: Ii.3 Considerations For Making Measurements

    For the following geometries, we have found that an approximate transition point to turbulent flow occurs as follows: 1) No. 1 LV Spindle: 15 cP at 60 RPM 2) No. 1 RV Spindle: 100 cP at 50 RPM 3) UL Adapter: 0.85 cP at 60 RPM...

  • Page 11: Appendix A - Cone/Plate Viscometer Set-Up

    APPENDIX A - Cone/Plate Viscometer Set-Up The Wells-Brookfield Dial Viscometer uses the same operating instruction procedures as described in this manual. However, the gap between the cone and the plate must be mechanically adjusted before measurements are made. This is done by moving the plate (built into the sample cup, Part No. CP-44Y) up towards the cone until two small pins (one in the cone, the second mounted on the plate) contact slightly, and then by separating (lowering) the plate 0.0005inch (0.013mm).
  • Page 12 (indicating that the pins on the cone and cup are hitting), unscrew the adjustment ring by turning it to the left (clockwise as you look down on the instrument) until the reading settles at 0.0% (Figure A4). Brookfield Engineering Laboratories, Inc. Page 10...
  • Page 13 Turn the adjustment ring until the display reading jumps from 0.0 to 0.5% (HA and HB models) or from 0.0 to 0.6% (RV models) or 0.0 to 1.0% (LV models). This is the HIT POINT. The cup may have to be adjusted up and down several times before this deflection is satisfactorily reached.
  • Page 14 (Figure A7). Index Mark Index Mark Adjusting Ring Adjustment Ring One Scale One Scale Division Division Turn Adjustment Ring Clockwise a Distance Equal to One Scale Division Figure A7 Brookfield Engineering Laboratories, Inc. Page 12 Manual No. M/85-150-N898...
  • Page 15 "Cone/Plate Rheometer Set Up" Procedure. 3) Put the proper amount of viscosity standard fluid into the sample cup. The amount varies per cone spindle (refer to Table A1). Brookfield Engineering Laboratories, Inc. Page 13 Manual No. M/85-150-N898...
  • Page 16 Notes: 1) The spindle must rotate at least (5) times before a viscosity reading is taken. 2) The use of Brookfield Viscosity Standard fluids in the range of 5 cP to 5000 cP is recommended for cone/plate instruments. Please contact Brookfield Engineering Laboratories or an authorized dealer if your calibration procedure requires more viscous standards.
  • Page 17 The ratio of (ωr) and (c) is a constant for any value of (r). Since (c) is a maximum at cone radius (r), the shear rate is related to (ω) and sin θ. For the Wells-Brookfield Cone/Plate Viscometer, the mathematical relationships are: Shear Stress (dynes/cm 2/3 π...
  • Page 18 Wells-Brookfield Cone/Plate Viscometer Full Scale Ranges LVTCP Viscometer RVTCP Viscometer 3.0° Cone Spindle 3.0° Cone Spindle SPEED SHEAR RATE CONE # CP-41 CONE # CP-52 SPEED SHEAR RATE CONE # CP-41 CONE # CP-52 (SEC -1 ) (SEC -1 )
  • Page 19 = Dial Reading x Factor Factor = Viscometer Range/100 Note: When calibrating 2.4cm diameter cone spindles CP-51 or CP-52 at shear rates greater than 384 sec , use Brookfield Viscosity Standards 5,000 cP or lower. Brookfield Engineering Laboratories, Inc. Page 17 Manual No. M/85-150-N898...

  • Page 20: Appendix B - Viscosity Ranges

    APPENDIX B - Viscosity Ranges LV Series Viscometers with Spindles #1 - #4 RV/HA/HB Series Viscometers with Spindles #1 - #7 Viscosity Range (cP) Viscometer Minimum Maximum 100,000 2,000,000 2,000,000 8,000,000 16,000,000 64,000,000 Small Sample Adapter and Thermosel Viscosity (cP) SSA &...
  • Page 21 3,200,000 8,000 - 1,600,000 32,000 - 6,400,000 20,000 - 4,000,000 80,000 - 16,000,000 40,000 - 8,000,000 160,000 - 32,000,000 100,000 - 20,000,000 400,000 - 80,000,000 200,000 - 40,000,000 800,000 - 160,000,000 Brookfield Engineering Laboratories, Inc. Page 19 Manual No. M/85-150-N898...

  • Page 22: Appendix C - Variables In Viscosity Measurements

    Brookfield publication, “More Solutions to Sticky Problems” includes a more detailed discussion of rheological properties and non-Newtonian behavior.
  • Page 23 3) Sample volume 4) Viscometer model 5) Spindle used (if using LV (#1-4) or RV (#1-7) attach the guard leg) 6) Test speed or speeds (or the shear rate) 7) Length of time or number of spindle revolutions to record viscosity.

  • Page 24: Appendix D - Calibration Procedures

    Brookfield Viscosity Standard Fluid General Information We recommend that Brookfield Viscosity Standard Fluids be replaced on an annual basis, one year from date of initial use. These fluids are pure silicone and are not subject to change over time.
  • Page 25 Calibration Procedure for LV(#1-4) and RV,HA,HB(#1-7) Brookfield Spindles 1) Place the viscosity standard fluid (in the proper container) into the water bath. 2) Lower the Viscometer into measurement position (with guard leg if LV or RV series Viscometer is used).
  • Page 26 Calibration Procedure using a Helipath Stand and T-Bar Spindles When a Helipath Stand and T-Bar spindles are used: Remove the T-bar spindle and select a standard LV(#1-4) or RV,HA,HB(#1-7) spindle. Follow the procedures for LV(#1-4) and RV,HA,HB(#1-7) Brookfield spindles outlined above.
  • Page 27 Notes: 1) The spindle must rotate at least (5) times before a viscosity reading is taken. 2) The use of Brookfield Viscosity Standard fluids in the range of 5 cP to 5000 cP is recommended for cone/plate instruments. Please contact Brookfield Engineering Laboratories or an authorized dealer if your calibration procedure requires more viscous standards.
  • Page 28 The Dial Viscometer is accurate to ± 1% of any full scale spindle/speed viscosity range. Brookfield Viscosity Standards Fluids are accurate to ± 1% of their stated value. Example: Calculate the acceptable range of viscosity using RVF with RV-3 Spindle at 2 RPM;...
  • Page 29 Practically speaking, the guard leg has the greatest effect when used with the #1 & #2 spindles of the LV and RV spindle sets. Any other LV (#3 & #4) or RV (#3 - #7) spindle can be used in a 600 ml beaker with or without the guard leg to produce correct results.
  • Page 30 LV Guardleg RV Guardleg Brookfield Engineering Laboratories, Inc. Page 28 Manual No. M/85-150-N898...

  • Page 31: Appendix E - Models A & A-E Laboratory Stand

    Figure E1 VS-21 Unpacking Check carefully to see that all the components are received with no concealed damage. 1 base 1 jam nut 3 leveling screws 1 clamp assembly 1 upright rod Brookfield Engineering Laboratories, Inc. Page 29 Manual No. M/85-150-N898...
  • Page 32 Center the Viscometer relative to the stand base and retighten the jam nut as required. Referring to the Viscometer bubble level, adjust the leveling screws until the instrument is level. Operation Rotate the Gear Screw to raise or lower the viscometer. Brookfield Engineering Laboratories, Inc. Page 30 Manual No. M/85-150-N898...

  • Page 33: Appendix F - Fault Diagnosis And Troubleshooting

    APPENDIX F - Fault Diagnosis and Troubleshooting Listed are some of the more common problems that you may encounter while using your Viscom- eter. Review these items before you contact Brookfield. Spindle Does Not Rotate Make sure the viscometer is plugged in.
  • Page 34 • Verify calibration check procedures were followed exactly If the unit is found to be out of tolerance, the unit may be in need of service. See Appendix G for details on how to return your viscometer. Brookfield Engineering Laboratories, Inc. Page 32 Manual No. M/85-150-N898...

  • Page 35: Appendix G - Warranty Repair And Service

    APPENDIX G - Warranty Repair and Service Warranty Brookfield Viscometers are guaranteed for one year from date of purchase against defects in materials and workmanship. The Viscometer must be returned to Brookfield Engineering Laboratories, Inc. or the Brookfield dealer from whom it was purchased for no charge warranty evaluation service.
  • Page 36 Middleboro, MA 02346 U.S.A. Telephone: (508) 946-6200 FAX: (508) 946-6262 For repair or service outside the United States consult Brookfield Engineering Laboratories, Inc. or the dealer from whom you purchased the instrument. For repair or service in the United Kingdom return to:...

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