Cannon 9721-F77 CFOC- 450 Calibrated

Cannon 9721-F77 CFOC- 450 Calibrated

The Cannon 9721-F77 CFOC-450 Calibrated is a precision Cannon-Fenske Opaque Viscometer for measuring the kinematic viscosity of dark Newtonian liquids. Specifically, this reverse-flow viscometer is used when the liquid meniscus cannot be seen at timing marks. Therefore, it is ideal for samples unsuitable for routine-type viscometers. Moreover, the instrument complies with ASTM D445, ASTM D446, ISO 3104, and ISO 3105, ensuring consistent and standardized results.

Product Features

First, the reverse-flow design allows accurate timing for opaque liquids. In addition, the viscometer is suitable for testing cutback asphalts and road oils at 60 °C (140 °F). Consequently, it meets ASTM D2170 requirements. Furthermore, it is used to study lubricating and hydraulic oils at low temperatures. In particular, it supports evaluation of additive effects on oil performance. Meanwhile, external pressure can be applied to adjust shear stress and shear rate. As a result, the viscometer enables advanced rheological analysis. Each unit is factory calibrated and supplied with a calibration certificate and instruction sheet, thereby supporting traceable measurements.

Specifications

The viscometer requires a minimum sample volume of 12 mL. Additionally, a minimum bath depth of 229 mm (9 in) is required. The instrument is calibrated at 40 °C. Moreover, it has an approximate constant of 2.5 cSt/s. Consequently, it covers a viscosity range of 500 to 2500 cSt. This range corresponds to flow times between 200 and 1000 seconds. Expanded uncertainty information is available upon request. Viscometers with special constants can also be supplied. However, the holder is sold separately. Compatible holders include 9726-M50 and 9726-M53. Replacement micro stoppers are available as 9726-N98.

Applications

Therefore, this viscometer is suitable for asphalt and petroleum laboratories. In addition, it supports lubricant formulation and additive research. Moreover, it is used for hydraulic oil analysis and quality control testing. In particular, it is recommended for dark or opaque fluids tested under international standards.