Brookfield DV-I Viscometer - Manual (Page 34)

Brookfield Engineering Laboratories, Inc. Page 34 Manual No. M/92-021-O604
Calibration Procedure for a Small Sample Adapter
When a Small Sample Adapter is used, the water jacket is connected to the water bath and the water is
stabilized at the proper temperature:
1) Put the proper amount of viscosity standard fluid into the sample chamber. The amount
varies with each spindle/chamber combination. (Refer to the Small Sample Adapter
instruction manual.)
2) Place the sample chamber into the water jacket.
3) 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+.
4) Allow sufficient time for the viscosity standard, sample chamber and spindle to reach test
temperature.
5) Measure the viscosity and record the viscometer reading; include % and cP (m•Pas).
NOTE: The spindle must rotate at least five (5) times before a viscosity reading
is taken.
Calibration 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 this
section, entitled Calibration Procedure for LV (#1-4) and RV,HA,HB (#1-7) Brookfield
spindles.
2) Evaluate the Viscometer with the Thermosel according to the procedure decribed 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.
1) 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).
2) Place the sample chamber into the Thermo Container.
3) 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+.
4) Allow sufficient time for the viscosity standard, sample chamber and spindle to reach test
temperature.
5) Measure the viscosity and record the viscometer reading; include % and cp (m•Pas).
NOTE: The spindle must rotate at least five (5) times before a viscosity reading is taken.