Industrial Technologies

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In most glass capillary viscometers, the samples flow under gravity. When liquids are too viscous to flow readily under gravity, vacuum viscometers may be used to measure viscosity (in mPa•s or cP). In these instruments a vacuum is applied to one end of the viscometer to pull the liquid through the capillary into the timing bulb(s). CANNON offers several types of vacuum viscometers, including the Cannon-Manning Vacuum, the Asphalt Institute Vacuum, and the Modified Koppers Vacuum. Like the Cannon-Fenske Opaque viscometer, these are all “reverse flow” viscometers. Vacuum viscometers require a vacuum that is very accurately controlled. The CANNON DVR-1000 or DVR-1500 Digital Vacuum Regulator is an ideal instrument for maintaining constant vacuum.

MKV Calibrated Series
For measurement of viscosity of asphalts at 60°C (140°F) in accordance with ASTM Standard D 2171. Applicable to materials with viscosity range of 42 to 200 000 poise. Two-piece design, with sample reservoir and calibrated capillary. Vacuum of 300 mm Hg must be applied to top of capillary tube.
Provided with certificate of calibration and instruction sheet.
Minimum sample volume 2 mL. Require liquid bath depth of 178 mm (7 inches).

*Viscometers with special constants, added temps, and before/after data are available by special order at an additional cost.