Brookfield KU-2 Viscometer - Manual (Page 13)

Brookfield Engineering Labs., Inc. Page 13 Manual No. M04-242-D0612
4) Now that you have the accuracy for the instrument, you can add it to the accuracy of the
fluid. The fluid is accurate to ± 1% of the stated value in KU. The viscosity standard is
calibrated at 104.8 KU, ± 1% is equal to ± 1.0 KU.
0.9 KU (instrument accuracy)
+ 1.0 KU (fluid accuracy)
1.9 KU (total allowable error)
5) Total allowable error for the calibration check in this example is 104.8 KU, ± 1.9 KU
(102.9 KU to 106.7 KU). Since the measured reading of 105 KU falls within this range, the
Viscometer is considered in calibration.