Brookfield DV-III Rheometer - Manual (Page 45)

- 45 -
A) Evaluate the calibration of the Viscometer alone according to the procedure outlined in
Appendix E, “Calibration Procedure for LV (#1-4) and RV,HA,HB (#1-7) Brookfield spindles.”
B) Evaluate the Viscometer with Thermosel according to the procedure listed below:
a) Put the proper amount of HT viscosity standard fluid into the HT-2 sample chamber. The
amount varies with the spindle used. (Refer to the Thermosel instruction manual).
b) Place the sample chamber into the Thermo Container.
c) Put the spindle into the test fluid and attach the extension link, coupling nut and free hanging
spindle (or directly attach the solid shaft spindle) to the DV-III.
d) Allow 30 minutes for the viscosity standard, sample chamber and spindle to reach test
temperature.
e) Measure the viscosity and record the Rheometer reading.
Note: The spindle must rotate at least five (5) times before a viscosity reading is taken.
Calibration Procedure using UL or DIN UL Adapters
When a UL or DIN UL Adapter is used, the water bath is stabilized at the proper temperature:
1) Put the proper amount of viscosity standard fluid into the UL Tube. (Refer to the UL Adapter
instruction manual).
2) Attach the spindle (with extension link and coupling nut) onto the DV-III.
3) Attach the tube to the mounting channel.
4) Lower the tube into the water bath reservoir, or if using the ULA-40Y water jacket, connect the
inlet/outlets to the bath external circulating pump.
5) Allow 30 minutes for the viscosity standard, sample chamber and spindle to reach test
temperature.
6) Measure the viscosity and record the Rheometer reading.
Note: The spindle must rotate at least five (5) times before a viscosity reading is taken.
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.
T-Bar spindles should not be used for verifying calibration of the DV-III Rheometer.
Calibration Procedure for Spiral Adapter
1) Place the viscosity standard fluid (in the proper container) into the water bath.
2) Attach the spindle to the viscometer. Attach chamber (SA-1Y) and clamp to the viscometer.