RheoVADR
®
Rheometer Instruction Manual
D00845847
Revision E, September 2014
12
3.3
Rotor and Bob Specifications
Table 3-2 Rotor-Bob Specifications and Constants
ROTOR-BOB
R1 B1
R2 B1
R3 B1
R1 B2
R1 B3
R1 B4
R1B5
Rotor Radius, R
0
(cm)
1.8415
1.7588
2.5866
1.8415
1.8415
1.8415
1.8415
Bob Radius, R
i
(cm)
1.7245
1.7245
1.7245
1.2276
0.8622
0.8622
1.59829
Bob Height, L (cm)
3.8
3.8
3.8
3.8
3.8
1.9
3.8
Shear Gap in Annulus
(cm)
0.117
0.0343
0.8261
0.6139
0.9793
0.9793
0.2432
Radii Ratio, R
i
/R
0
0.9365
0.9805
0.667
0.666
0.468
0.468
0.8679
Maximum Use
Temperature (
o
C)
93
93
93
93
93
93
93
Minimum Use
Temperature (
o
C)
0
0
0
0
0
0
0
Overall Instrument
Constant, K
Standard F1 Torsion
Spring,
η
= Kf
θ
/N
300
94.18
1355
2672
7620
15,200
703
Shear Rate Constant k
3
(sec
-1
per rpm)
1.7023
5.4225
0.377
0.377
0.268
0.268
0.8489
Shear Stress Constant for
Effective Bob Surface k
2
(cm
-3
)
0.01323
0.01323
0.01323
0.0261
0.0529
0.106
0.01546
3.4
Operating Specifications
Table 3-3 Range of Environmental Conditions
Maximum Altitude
6562 ft (2000 m)
Temperature Range
39
o
F to 122
o
F (4
o
C to 50
o
C)
Maximum Relative Humidity (RH)
80% RH at 87.8
o
F (31
o
C) or less
50% RH at 104
o
F (40
o
C)