SEYMOUR II

Seymour operates in a simpler manner - only one piston is mobile and is operated by a simple solenoid. A fluid filament can still be formed, but the midpoint of the fluid at the beginning of the test and at the end of the test are in different locations! Everything is a compromise - simplifying the mechanics of Seymour to make it inexpensive, light and portable, results in a more challenging image processing and measurement problem. This is solved by taking advantage of cheap computing power and by using the new generation of compact, robust, solid-state high speed cameras. The time resolution of these cameras is still significantly lower than laser micrometers, but they are suitable for a range of medium to high viscosity Newtonian liquids (typically 500 mPa s and above) and viscoelastic liquids. A diagram of Seymour's operation is shown below.