Brookfield DV-III Rheometer - Manual (Page 67)

Brookfield Engineering Laboratories, Inc. Page 67 Manual No. M/98-211-A0701
APPENDIX E - Calibration Procedures
The accuracy of the DV-III+ is verified using viscosity 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 (or shear rate). Viscosity standards,
calibrated at 25
°
C, are shown in Table E1.
Container size: For Viscosity Standards < 30,000 cP, use a 600 ml Low Form Griffin Beaker
having a working volume of 500 ml.
For Viscosity Standards
≥
30,000 cP, use the fluid container.
Inside Diameter: 3.25"(8.25cm)
Height:
4.75"(12.1cm)
Note: Container may be larger, but may not be smaller.
Temperature: As stated on the fluid standard label: ( + /-) 0.1
°
C
Conditions: The DV-III+ should be set according to the operating instructions. The water
bath should be stabilized at test temperature. Rheometers with the letters “LV”
or “RV” in the model designation should have the guard leg attached.
Table E1
Normal 25
°
C Standard Fluids High Temperature Standard Fluids
Viscosity (cP) Viscosity (cP) Three Viscosity/Temperatures**
5 5,000 HT-30,000
10 12,500 HT-60,000
50 30,000 HT-100,000
100 60,000
500 100,000 **25
°
C, 93.3
°
C, 149
°
C
1,000 Refer to Brookfield catalog for more
information.
Table E2
MINERAL OIL VISCOSITY STANDARD FLUIDS
BEL Part No. Viscosity (cP) 25
°
C
B31 31
B210 210
B750 750
B1400 1,400
B2000 2,000
B11000 11,000
B20000 20,000
B80000 80,000
B200000 200,000
B420000 420,000