OfiTE 800 - Specifications

OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ote.com 5
Specications
Instrument Geometry True Couette Coaxial Cylinder
Speed Accuracy (RPM) .1
Motor Speeds (RPM)
8 Fixed Speeds (600, 300, 200, 100, 60,
30, 6, and 3)
Readout Direct Dial
Power Requirements 13 – 16 VDC
Weight (kg) 6.0
Dimensions (cm) 15.2 × 17.8 × 40.6
Shipping Weight (kg) 20.4
Shipping Dimensions (cm) 55.9 × 25.4 × 40.6
Range of Measurement for Model 800
Rotor - Bob R1B1 R1B2 R1B3 R1B4 R1B5
Rotor Radius, RR, (cm) 1.8415 1.8415 1.8415 1.8415 1.8415
Bob Radius, RB, (cm) 1.7245 1.2276 0.8622 0.8622 1.5987
Bob Height, L, (cm) 3.8 3.8 3.8 1.9 3.8
Shear Gap, (cm) 0.117 0.6139 0.9793 0.9793 0.2428
R Ratio, RB/RR 0.9365 0.666 0.468 0.468 0.8681
Shear Rate Constant k
R
(sec
-1
per RPM)
1.7023 0.377 0.2682 0.2682 0.8503
Shear Stress Constant for
E󰀨ective Bob Surface k
S
(cm
-3
)
0.01323 0.02610 0.05290 0.10600 0.01541
Overall Instrument Constant,
K, with Standard F1.0 Spring,
ŋ=KfƟ/N
300 2,672 7,620 15,200 349
Max. Shear Stress,
SS
MAX
, (Dyne / cm
2
)
Constant
k
T
R1B1 R1B2 R1B3 R1B4 R1B5
F 0.2 (Green) 77.2 330 651 1,320 2,644 384
F 0.5 (Yellow) 193 840 1,657 3,359 6,730 977
F 1.0 (Blue) 386 1,680 3,314 6,717 13,460 1,955
F 2.0 (Red) 772 3,360 6,629 13,435 26,921 3,910
F 3.0 (Purple) 1,158 5,040 9,943 20,152 40,381 5,865
F 4.0 (White) 1,544 6,720 13,257 26,870 53,841 7,819
F 5.0 (Black) 1,930 840 16,571 33,587 67,302 9,774
F 10.0 (Orange) 3,860 16,800 33,143 67,175 134,603 19,548