Measurement of ultra-fine particles utilizing pulsed corona sign

Details Measurement of ultra-fine particles utilizing pulsed corona sign Measurement of ultra-fine particles utilizing pulsed corona sign

1986-09-19

1988-09-06

Pellinen, A. D.

Electricity: measuring and testing

A material property using electrostatic phenomenon

Corona induced

324 714, 324464, 340627, 738655, 356313, G01N 2762

Patent

active

047696095

ABSTRACT:
In the known electrical mobility analyzer, a novel means for charged particle detection instead of measuring the low level current carried by the particles is provided. This detection is based on the burst corona occuring from a positive corona electrode applied with a voltage slightly lower than its onset voltage at an instant when a negatively charged particle arrives at the tip of the corona electrode. This detection detects and counts the burst corona pulses produced by the particles negatively precharged.

REFERENCES:
patent: 3526828 (1970-09-01), Whitby
patent: 3718029 (1973-02-01), Gourdine et al.
patent: 3787123 (1974-01-01), Sigrist
patent: 4198160 (1980-04-01), Kachel et al.
patent: 4312180 (1982-01-01), Reif et al.
patent: 4531402 (1985-07-01), Reif et al.

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