Cannon-Fenske Opaque Viscometer

Brand: Ramin' USA Product Code:
VIS-CFO

Reverse flow type viscometers are mostly used with dark samples that obscure the timing lines of other tube configurations. Since the sample is timed as it ascends to the timing marks, it is possible to test very dark samples. Approximately 11ml of sample is suctioned into the reservoir bulb with the tube inverted and a stopper is placed in this tube to prevent liquid from flowing. Then the tube is returned to upright position and equilibrated in the bath for 15-20 minutes. After equilibration, the stopper Is removed and sample flows downward into the first bulb, then upward into the two timing bulbs where two timings may be performed on the same sample (requires two stopwatches). The Cannon Fenske Opaque Viscometer is serialized and its certificate contains calibrated Constants for both the lower and upper bulbs. Dual viscosity data may be secured by multiplying the two timings with their respective Constants.

Bath depth required: 10”

 

 

Part # Size Approximate Constant, (mm 2/s)/s Kinematic Viscosity Range, mm2/s
VIS-CFO-025  25                 0.002 0.4 to 2 
VIS-CFO-050  50                 0.004 0.8 to 4 
VIS-CFO-075  75                 0.008 1.6 to 8 
VIS-CFO-100  100                 0.015 3 to 15 
VIS-CFO-150  150                 0.035 7 to 35 
VIS-CFO-200  200                 0.1 20 to 100 
VIS-CFO-300  300                 0.25 50 to 250 
VIS-CFR-350  350                 0.5 100 to 500 
VIS-CFR-400  400                 1.2 240 to 1,200
VIS-CFR-450  450                 2.5 500 to 2,500
VIS-CFR-500 500                 8 1,600 to 8,000
VIS-CFR-600  600                 20 4,000 to 20,000

 

 

 

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