Brookfield YR-1 Rheometer - Manual (Page 46)

Brookfield Engineering Labs., Inc. Page 46 Manual No. M02-215-B0412
APPENDIX C - Calibration Procedures
For more help you can go to the website,
www.brookfieldengineering.com, and download the video.
The torque sensing spiral spring in the YR-1 Rheometer is calibrated at Brookfield to be accu-
rate within ±1% of full scale range of a certified master viscometer. However, when checking
calibration with a vane spindle using the following procedures, an accuracy of ±2% of full scale
range is allowed.
The accuracy of the YR-1 is verified using one of your vane spindles with the appropriate viscos-
ity standard fluids which are available from Brookfield Engineering Laboratories or your local
Brookfield agent. Viscosity standards are Newtonian and, therefore, have the same viscosity
regardless of spindle speed. Viscosity standards, calibrated at 25°C, are shown in Table C-1
(Silicone Oils) and Table C-2 (Mineral Oils).
GENERAL PURPOSE SILICONE FLUIDS
BEL Part No. Viscosity (cP) 25ºC
5 CPS 5
10 CPS 10
50 CPS 50
100 CPS 100
500 CPS 500
1,000 CPS 1,000
5,000 CPS 5,000
12,500 CPS 12,500
30,000 CPS 30,000
60,000 CPS 60,000
100,000 CPS 100,000
Table C-1 - Silicone Viscosity Standard Fluids
MINERAL OIL VISCOSITY STANDARD FLUIDS
BEL Part No. Viscosity (cP) 25ºC
B29 29
B200 200
B600 600
B1060 1,060
B2000 2,000
B10200 10,200
B21000 21,000
B730000 73,000
B200000 200,000
B360000 360,000
Table C-2 - Mineral Oil Viscosity Standard fluids