Brookfield Engineering Laboratories Viscometer LVDV-II+Pro

Viscometer Calibration Verification

Verify calibration using standard viscometer spindles

Verify calibration using the Small Sample Adapter

Connect the water jacket to the water bath

Stabilize water at the proper temperature

Enter the amount of viscosity standard fluid used in the sample chamber

Place the sample chamber into the water jacket

Select the appropriate spindle for calibration

Place the viscosity standard fluid into the water bath

Lower the DV-II+Pro into measurement position

Attach the spindle to the Viscometer

Immersion and Temperature Stabilization

Immerse the viscosity standard fluid and spindle in the bath for a minimum of 1 hour

Check the temperature of the viscosity standard fluid after 1 hour

Ensure the instrument is in a decent working environment (dust-free, moderate temperature, low humidity, etc.)

Ensure the instrument is on a level surface

Ensure hands/fingers are clean and free of residue sample

Remove the spindle from the instrument prior to cleaning (note left-handed thread)

Clean the instrument and keypad with a dry, non-abrasive cloth. Do not use solvents or cleaners.

Clean the spindles with a non-abrasive cloth and solvent appropriate for sample material

Initial Calibration Verification

Verify calibration using standard viscometer spindles

Put the proper amount of viscosity standard fluid into the UL Tube

Attach the spindle with extension link and coupling nut onto the DV-II+Pro

Attach the tube to the mounting channel

Lower the tube into the water bath reservoir or connect the inlet/outlets to the bath external circulating pump

Allow 30 minutes for the viscosity standard, sample chamber, and spindle to reach test temperature

Measure the viscosity and record the Viscometer reading

Adjust the setting of the cone spindle to the plate

Refer to Appendix A, Table A-1 for sample volume determination

Viscosity Standard Fluid Selection

Select a viscosity standard fluid for 10% to 100% full scale range

Consult with Brookfield or authorized dealer for appropriate fluid selection