fann 35A - Viscometer Measuring Ranges

Model 35 Viscometer Instruction Manual
208878 Revision N, February 2013 33
7.5 Measuring Ranges
The measuring ranges for shear stress, shear rate, and viscosity are listed in Table
7-6, 7-7 and 7-8, respectively.
Table 7-6 Shear Stress Measuring Range for Fann Direct Indicating Viscometer
Torsion Spring/
Viscometer Reading
Shear Stress Range (dynes/cm
2
),
τ =
(k
1
k
2
θ)
Rotor-Bob Combinations
R1 B1 R2 B1 R3 B1 R1 B2 R1 B3 R1 B4
F 0.2
θ = 1
o
1.02 1.02 1.02 2.01 4.1 8.2
θ = 300
o
307 307 307 605 1225 2450
F 0.5
θ = 1
o
2.56 2.56 2.56 5.04 10.2 20.4
θ = 300
o
766 766 766 1510 3060 6140
F1
θ = 1
o
5.11 5.11 5.11 10.1 20.4 40.9
θ = 300
o
1533 1533 1533 3022 6125 12,300
F2
θ = 1
o
10.22 10.22 10.22 20.1 40.8 81.8
θ = 300
o
3066 3066 3066 6044 12,250 24,500
F3
θ = 1
o
15.3 15.3 15.3 30.2 61.3 123
θ = 300
o
4600 4600 4600 9067 18,400 36,800
F4
θ = 1
o
20.4 20.4 20.4 40.3 81.7 164
θ = 300
o
6132 6132 6132 12,090 24,500 49,100
F5
θ = 1
o
25.6 25.6 25.6 50.4 102 205
θ = 300
o
7665 7665 7665 15,100 30,600 61,400
F10
θ = 1
o
51.1 51.1 51.1 100.7 204 409
θ = 300
o
15,330 15,330 15,330 30,200 61,200 123,000