GRANULARS THAT DISPERSE BETTER IN FLIGHTÂ
                          COHESIVE AND ELECTROSTATIC POWDERS
                  Â
ZEPHYR LDAÂ Â Â Â DRY 7 micron to 3 mm
                         WET 1 micron to 1 mm
BY USING AÂ PARAMETER CALLED MAXIMUM INSCRIBED DISC, NEAR PERFECTÂ SIEVE CORRELATIONÂ IS NOW POSSIBLE, SINCE THIS EFFECTIVELY MEASURES THE WIDEST PART OF A PARTICLE, WHICH CONSEQUENTLY DETERMINES THE SIEVE APERTURE SIZE THE PARTICLE WOULD OR WOULD NOT FALL THROUGH. BECAUSE WE CANNOT TELL WHETHER A PARTICLE FALLS THROUGH A SIEVE APERTURE SQUARELY OR ON ITS' DIAGONAL, THERE WILL BE SOME VARIANCE.
âFOR BETTER CORRELATION TO A PARTICLES ACTUAL MASS, A PARAMETER CALLED EQUIVALENT DISC DIAMETER IS EMPLOYED. THIS BASICALLY EQUATES TO COUNTING PIXELS, ANDÂ CORRELATES MORE CLOSELY TO LASER DIFFRACTIONÂ RESULTS.
INSCRIBED CIRCLES ARE USEFUL IN DETERMINING OTHER IMPORTANT CHARACTERISTICS, SUCH AS ABRASIVE PROPERTIES OF PARTICLES
THIS ACTUAL IMAGE OF AN ESPRESSO COFFEE GRIND, HELPS SHOW
HOW SIEVING MAY PROVIDE FALSE INFORMATION IN REGARDS TO SIZE.
WHAT SIZE SQUARE APERTURE WOULD LIKELY CAPTURE THE PARTICLE.? EVEN MORE SO, WOULD IT FALL THROUGH ON THE PERPENDICULAR OR THE HORIZONTAL?
Also compared with direct measurements, laser diffraction results for plates and rods are difficult to correlate.
Using a special proprietary light source, and high resolution optics, select Occhio Particle Analyzers, are able to detect even sub visible particles as small as 200 nanometers, in real time. Kinetic analysis of particle aggregation in Â
OCCHIOÂ DIGITAL IMAGE ANALYZERS HAVE THE ABILITY TO DETECT AND QUANTIFY BOTH PARTICLE SIZE AND PARTICLE SHAPE, PAVING THE WAY FOR THE ADVANCED ANALYSIS OF PARTICLES IN BOTH LIQUID AND SOLID FORMS.
CORRELATIONS TO OTHER PARTICLE SIZE ANALYSIS METHODS, LIKE SIEVE ANALYSIS AND LASER DIFFRACTION, ARE SEAMLESSLY EMPLOYED. EVEN SHAPE PARAMETERS LIKE LENGTH, FLATNESS, AND ANGULARITY IN AGGREGATES, OR THE LENGTH OF STRINGY PARTICLES LIKE SHREDDED CHEESE, OR TOBACCO, ARE POSSIBLE.
ONCE A BASIC CORRELATION HAS BEEN ESTABLISHED, THE RESULTS ARE FINE TUNED WITH THEÂ OCCHIOÂ CORRELATION PROGRAM, ALLOWING FOR TURNKEY SOLUTIONS TO PARTICLE CHARACTERIZATION.