Brookfield Engineering Laboratories Viscometer RVDV-II+Pro

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

Select the appropriate spindle for calibration

Place the viscosity standard fluid in the proper container 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 at least 1 hour

Check the temperature of the viscosity standard fluid with an accurate thermometer

Viscometer Calibration Verification

Verify calibration using standard viscometer spindles

Verify calibration using the Thermosel

Put the proper amount of HT viscosity standard fluid into the HT-2 sample chamber

Place the sample chamber into the Thermo Container

Put the spindle into the test fluid

Attach the extension link, coupling nut and free hanging spindle or directly attach the solid shaft spindle to the DV-II+Pro

Place the viscosity standard fluid in the proper container into the water bath.

Attach the spindle and chamber to the viscometer

Lower the DV-II+Pro into measurement position and operate at 50 or 60 RPM until the chamber is fully flooded.

Immerse the viscosity standard fluid and spindle in the bath for a minimum of 1 hour, stirring periodically.

Temperature and Viscosity Check

Check the temperature of the viscosity standard fluid with an accurate thermometer.

Is the fluid at test temperature (+/- 0.1°C of the specified temperature, normally 25°C)?

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