A Portable, Battery-Operated, Immediate-Readout Dust-Particle Analyzer

摘要

A portable, battery-operated, electro-optical dust analyzer operating on the principle of light-scattering from individual dust particles in air drawn through a high-intensity light field has been developed for monitoring dust levels where external power may be unavailable. The instrument counts and size-discriminates air-borne particles over two size ranges upwards of 0.4 microns with immediate readout. A dilution mechanism permits analysis of particulate concentrations as high as 2400 particles/cm on each channel. The self-contained Ni-Cd batteries are rechargeable. Total weight, including batteries and all components, is approximately 14 lbs.