Volume and Density Measurement for Powder Process Applications

The Micromeritics AccuPyc II 1340 Series Pycnometers are distributed by Particle & Surface Sciences throughout Australia and New Zealand. The fast, fully automatic pycnometers provide high-speed, high-precision volume measurements and density calculations on a wide variety of powders, solids, and slurry shaving volumes from 0.01 to 350 cm3. The instrument completes most sample analyses in less than three minutes with excellent accuracy. After analyses are started with a few keystrokes, data are collected, calculations are performed, and results displayed without further operator intervention.

Many powder products are shipped and used as blends of primary ingredients. The accuracy and reproducibility of the blend can be monitored by comparing the measured densities to the expected density based upon the target recipe of primary ingredients. The high degree of accuracy and precision of the AccuPyc helps ensure that the blends produced at a given plant match the desired recipe, the previous lots of materials and those from other locations, regardless of the industry where these blends are used.

Ceramics and powder metallurgy – Density measurements can be used to determine closed porosity from casting, sintering and forging operations where parts are made from powdered samples. If the density of the finished part is significantly less than that of the constituent powder, closed pores have formed during the part processing.

The instrument can be operated with a keypad or an optional Windows® interface that provides exceptional reporting and archiving capability. Both versions include direct sample mass input from a balance and cycle-based displacement volume reporting. The Windows interface also includes time-based pressure equilibration, percent solids content and total pore volume reports.

For those who require high throughput, an integrated control and analysis module can control up to five additional external analysis modules of the same or different volume capacities. A glove box model is also available for analyses in applications where the control module and analysis module must be in separate environments.

Typical applications include : ceramics and powder metallurgy, slurries, plastic films, pharmaceuticals, coatings, calcination, organic chemicals and polymers, rigid cellular plastics, blending of materials.

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