User's Guide

Appendix A. Large Particle Detection Device
A.3
Reading the ParticleSpectrum Display
In Large Particle mode, you will have the same Settings Menu but the Graph Particle Sizes will change
to 4 bin sizes. You will also no longer have selection control between Density and Frequency, because
all large particle charts display using frequency mode (the number of particles per unit time). All other
display controls operate the same in large particle mode.
Large Particle Chart
For large particles mode differential particle measurements are charted, whereas in the small particle
mode cumulative particle measurements are charted. Differential particle measurements assign and
chart a given particle to one and only one “bin” based on the particles size. Cumulative particle
measurements include all particles of a given size or larger. ParticleSpectrum charts only one bin size
on the graph.
Figure A.2: Large Particle - ParticleSpectrum Display
Graph Particle
Sizes
Average
Particle
Frequency