Brookfield DV2T Viscometer - Manual (Page 79)

Brookfield Engineering Labs., Inc. Page 79 Manual No. M13-167-B0614
2) The Viscosity Standard Fluid is 101.5 cP. Its accuracy is:
+/- 1% x 101.5 cP = +/- 1.015 cP or roughly +/- 1.0 cP for further calculations.
3) Total accuracy is the sum of the values n (1) and (2):
At 6 RPM, accuracy is: 15.6 cP + 1.0 cP = +/- 16.6 cP
At 12 RPM, accuracy is: 7.8 cP + 1.0 cP = +/- 9.8 cP
At 30 RPM, accuracy is: 3.1 cP = 1.0 cP = +/- 4.1 cP
4) Therefore, at each speed, the acceptable windows within which the measured
viscosity value must lie is calculated relative to the viscosity value of the standard:
At 6 RPM: 84.9 cP to 118.1 cP
At 12 RPM: 91.7 cP to 111.3 cP
At 30 RPM: 97.4 cP to 105.6 cP
If your measured values fall outside of these windows, contact Brookfield or your authorized
dealer to discuss your results and determine whether your instrument is out of calibration.