Brookfield Dial Stepper Viscometer - Manual (Page 20)

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Brookfield Engineering Laboratories, Inc. Page 20 Manual No. M00-151-H0612
7) The viscosity reading should equal the cP value on the viscosity standard fluid to within the
combined accuracies of the Viscometer and the viscosity standard (as discussed in the section
entitled, Interpretation of Calibration Test Results) which appears later in this section.
Verification Procedure for a Small Sample Adapter
When a Small Sample Adapter is used, the water jacket should be connected to a water bath and the
sample 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 instructions).
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 Viscometer.
4) Allow 30 minutes for the viscosity standard, sample chamber and spindle to reach test temperature.
5) Measure the viscosity and record the Viscometer reading.
Note: The spindle must rotate at least five (5) times before a viscosity reading is taken.
6) The viscosity reading should equal the cP value on the viscosity standard fluid to within the
combined accuracies of the Viscometer and the viscosity standard (as discussed in the section
entitled, Interpretation of Calibration Test Results) which appears later in this section.
Verification Procedure for a Thermosel System
Before verifying the Thermosel and controller, follow the verification procedure for regular spindles
RV/HA/HB 2-6 or LV 61-63+. When a Thermosel System is used, the controller stabilizes the Thermo
Container at the test temperature.
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 Viscometer.
4) Allow 30 minutes for the viscosity standard, sample chamber and spindle to reach test temperature.
5) Measure the viscosity and record the Viscometer reading.
Note: The spindle must rotate at least five (5) times before a viscosity reading is taken.
6) The viscosity reading should equal the cP value on the viscosity standard fluid to within the
combined accuracies of the Viscometer and the viscosity standard (as discussed in the section
entitled, Interpretation of Calibration Test Results) which appears later in this section.