User's Guide

Chapter 3. Using Your APS3
3.6
• Particle frequency and particle density. ParticleSpectrum displays particle
measurements as either particle frequency (number of particles per unit time) or as particle
density (number of particles per volume). For more information, see “Displaying Particle
Density or Frequency,” on page 3.17.
The other features of the ParticleSpectrum display are described later in this
chapter.