Brookfield DV-I Prime - Manual (Page 58)

Brookfield Engineering Laboratories, Inc. Page 58 Manual No. M/07-022-D0613
Calibration Check Procedure for a Thermosel System
A two-step process is recommended for the Thermosel.
1) Evaluate the calibration of the Viscometer alone according to the procedure outlined in
the beginning of this section, entitled Calibration Procedure for LV (#1-3) and RV, HA,
HB (#1-6) Brookfield spindles.
2) Evaluate the Viscometer with the Thermosel according to the procedure described below.
When a Thermosel System is used, the controller stabilizes the Thermo Container at the test
temperature. DO NOT USE THE THERMOSEL TO CONTROL TO TEMPERATURES
WITHIN 15° OF AMBIENT TEMPERATURES. Consult your Thermosel manual for
details.
3) 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).
4) Place the sample chamber into the Thermo Container.
5) 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-I PRIME.
6) Allow sufficient time for the viscosity standard, sample chamber and spindle to reach test
temperature.
7) Measure the viscosity and record the viscometer reading; include % and cP (mPa•s).
NOTE:
The spindle must rotate at least five (5) times before readings are taken.
Calibration Check Procedures for UL Adapter
When a 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 closed Tube. (Refer to the
UL Adapter instruction manual).
2) Attach the spindle (with coupling nut) onto the DV-I PRIME.
3) Attach the tube to the mounting bracket.
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 sufficient time for the viscosity standard, sample chamber and spindle to reach test
temperature.
6) Measure the viscosity and record the viscometer reading; include % and cP (mPa•s).
NOTE:
The spindle must rotate at least five (5) times before readings are taken.