fann 35A - Table 7-8 Viscosity Range in Centipoise for Fann Direct Indicating Viscometers

Model 35 Viscometer Instruction Manual
208878 Revision N, February 2013 35
Table 7-8 Viscosity Range in Centipoise for Fann Direct Indicating Viscometers
Fann Model
Viscosity (cP)
(
1)
Rotor-Bob Combinations
R1 B1 R2 B1 R3 B1 R1 B2 R1 B3 R1 B4
All Models, 600 rpm max
Minimum Viscosity
(
2)
0.5
(3)
0.5
(3)
2.3 4.5 12.7 25
Model 35A & 35SA
3 rpm min
Maximum Viscosity
(4)
30,000 9,400 135,000 270,000 762,000 1,500,000
Model 35A/SR 12 &
35SA/SR 12
0.9 rpm min
Maximum Viscosity
(4)
100,000 31,400 400,000 890,000 2,550,000 5,000,000
Notes:
(1) Computed for standard Torsion Spring (F1). For other torsion springs multiply viscosity range by f factor.
(2) Minimum viscosity is computed for minimum shear stress and maximum shear rate.
(3) For practical purposes the minimum viscosity is limited to 0.5 cP because of Taylor Vortices.
(4) Maximum viscosity is computed for maximum shear stress and minimum shear rate.