CANNON 9721-F65 CFOC-200 Cannon-Fenske Opaque Viscometer (Reversed Flow), Size 200, CALIBRATED
CANNON 9721-F65 CFOC-200 Cannon-Fenske Opaque Viscometer (Reversed Flow)
CFOC-200 Cannon-Fenske Opaque Viscometer (Reversed Flow)
SKU# 9721-F65
Cannon Instruments
Overview: CFOC-200 Cannon-Fenske Opaque Viscometer, size 200, CALIBRATED
The Cannon-Fenske Opaque Viscometer is a reverse-flow type, for measurement of kinematic viscosity of dark Newtonian liquids according to ASTM D445 and ISO 3104. It permits measurement of liquids whose meniscus cannot be seen at the timing marks when using a Cannon-Fenske Routine-type viscometer. Used to measure kinematic viscosity of liquid (cutback) asphalts and road oils at 60°C (140°F) in range of 30 to 6000 centistokes according to ASTM D2170. Also used to study lubricating oils at low temperatures when investigating the effect of various additives on lubricating and hydraulic oils. External pressure can be applied to vary shear stress and shear rate. Specifications conform to ASTM D446 and ISO 3105.
Minimum sample volume is 12 mL. Minimum bath depth is 229 mm (9 in).
Viscometer is calibrated at 40 °C and is provided with a certificate of calibration and instruction sheet. See expanded uncertainty for more information.
Approximate constant is 0.002 cSt/s and range is 0.4 to 2 cSt.
Viscometers with special constants are available by special order at additional cost.
Holder is sold separately. For holder, see 9726-M50 and 9726-M53. For replacement micro stoppers, see 9726-N98.
CANNON-Fenske Opaque Viscometers
| Catalog Number | Size | Approximate Constant (mm²/s²) |
Viscosity Range (mm²/s)† | ||
|---|---|---|---|---|---|
| Uncalibrated | Calibrated | Low | High | ||
| 9721-E50 | 9721-F50 | 25 | 0.002 | 0.4 | 2.0 |
| 9721-E53 | 9721-F53 | 50 | 0.004 | 0.8 | 4.0 |
| 9721-E56 | 9721-F56 | 75 | 0.008 | 1.6 | 8.0 |
| 9721-E59 | 9721-F59 | 100 | 0.015 | 3.0 | 15 |
| 9721-E62 | 9721-F62 | 150 | 0.035 | 7.0 | 35 |
| 9721-E65 | 9721-F65 | 200 | 0.1 | 20 | 100 |
| 9721-E68 | 9721-F68 | 300 | 0.25 | 50 | 250 |
| 9721-E71 | 9721-F71 | 350 | 0.5 | 100 | 500 |
| 9721-E74 | 9721-F74 | 400 | 1.2 | 240 | 1200 |
| 9721-E77 | 9721-F77 | 450 | 2.5 | 500 | 2500 |
| 9721-E80 | 9721-F80 | 500 | 8.0 | 1600 | 8000 |
| 9721-E83 | 9721-F83 | 600 | 20 | 4000 | 20000 |
| 9721-E86 | 9721-F86 | 650 | 45 | 9000 | 45000 |
| 9721-E89 | 9721-F89 | 700 | 100 | 20000 | 100000 |
†Viscosity ranges in mm²/s represent flow times of 250 to 1000 seconds for size 25 and 200 to 1000 seconds for all other sizes
The Cannon-Fenske Opaque Viscometer is a capillary-type, reverse-flow viscometer designed for measuring the kinematic viscosity of Newtonian liquids, including dark or opaque samples. Its reversed-flow design is particularly suitable for liquids where the meniscus is difficult to observe.
Key Features
- Designed for opaque and dark-colored liquids
- Reversed-flow configuration for easy measurement of difficult-to-observe samples
- Precision glass capillary construction
- Suitable for determining kinematic viscosity
- Available in multiple sizes for different viscosity ranges
- Uncalibrated version suitable for laboratories performing their own calibration
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