Patent ID: 9410878
Filing Date: 2016-08-09
CPC Classification: G01N

Claim Text:
1. A portable particle sizer system for measuring sizes of particles in an aerosol gas sample, the system comprising: at least one pump for pumping aerosol gas samples through the system, wherein the aerosol gas comprises particles; at least one proportional valve connectable to the at least one pump; at least one flow meter connectable to the at least one pump for measuring aerosol gas flow through rates set by the at least one pump and the at least one proportional valve; at least one corona ionizer for ionizing the particles, wherein the at least one corona ionizer comprises: at least one tungsten needle; and at least one ground ring electrode; and at least one reverse differential mobility analyzer (rDMA) for determining the particle size distribution based upon electrical mobility, wherein the rDMA further comprises at least one flexible printed electrode detector; and at least one analog-digital-converter for converting ionized charge to a digital signal.