Brookfield Dial Viscometer - Manual (Page 6)

Brookfield Engineering Laboratories, Inc. Page 6 Manual No. M/85-150-P700
fluid surface, and bring the spindle to an upright position and thread onto screw.
3. Lower and center spindle in the test material (600 ml beaker) until the "meniscus" of the fluid is
at the center of the immersion groove on the spindle’s shaft.
4. To make a viscosity measurement, turn the motor switch “ON”. This energizes the viscometer
drive motor. Allow time for the indicated reading to stabilize. The time required for stabilization
will depend on the speed at which the viscometer is running and the characteristics of the sample
fluid.
When making a viscosity measurement, the reading should be noted and multiplied by the factor
appropriate to the viscometer model/spindle/speed combination being used. Refer to the table
below or to the FACTOR FINDER for calculating viscosity. For maximum accuracy, readings
below 10.0% torque (dial reading) should be avoided.
5. Turn the viscometer motor switch “OFF” when changing a spindle, changing samples, etc.
Remove spindle before cleaning.
6. The interpretation of results and the instrument’s use with non-Newtonian and thixotropic
materials is discussed in the booklet, “More Solutions to Sticky Problems” and in Appendix C.
The following tables apply to Brookfield Viscometer Models LV, RV, HA and HB with standard
spindles. They enable the user to convert the percent scale reading into a viscosity value in units of
centipoise.
To convert the viscometer dial reading to a viscosity value in units of centipoise, multiply the reading
noted on dial viscometer by the appropriate factor in the following tables.
.3 200 .3 1 K .3 4 K .3 20 K
.6 100 .6 500 .6 2 K .6 10 K
1.5 40 1.5 200 1.5 800 1.5 4 K
3 20 3 100 3 400 3 2 K
6 10 6 50 6 200 6 1 K
12 5 12 25 12 100 12 500
30 2 30 10 30 40 30 200
60 1 60 5 60 20 60 100
1 2 3 4
LV Series Viscometer
= Spindle = Spindle Speed
= Factor K = 1000