Method and apparatus for the measurement of the size of particle

Details Method and apparatus for the measurement of the size of particle Method and apparatus for the measurement of the size of particle

1987-07-20

1989-05-16

Noland, Tom

Measuring and testing

Particle size

356336, G01N 1502, G01N 1514

Patent

active

048298387

ABSTRACT:
Apparatus for measuring the size of particles entrained in a gas comprises an optical fibre probe having a hemispherical end and insertable into a stream of gas bearing entrained particles to create a stagnation point in the flowing gas, a Doppler anemometer to measure particle velocity at a point upstream of the stagnation point and a computer-controlled burst counter to determine from the particle velocity measurements the distribution by number of aerodynamic diameter of the particles.

REFERENCES:
patent: 3983743 (1976-10-01), Olin et al.
patent: 4381674 (1983-05-01), Abts
patent: 4412451 (1983-11-01), Uusitalo et al.
patent: 4613938 (1986-09-01), Hansen et al.
patent: 4633714 (1987-01-01), Mazumder et al.

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