Method for determining the average radius and/or the average len

Details Method for determining the average radius and/or the average len Method for determining the average radius and/or the average len

1982-09-28

1985-07-16

Evans, F. L.

Optics: measuring and testing

For size of particles

356342, G01N 1502

Patent

active

045293090

ABSTRACT:
Fiber content measuring instruments having radiation detectors are used to indicate the average radius and/or the average length of particles in a flowing medium. In order to determine the average radius, a signal based on the alternating current voltage portion of the signal from a radiation detector having a high resolution is divided by a signal based on the direct current voltage portion and the signal from a radiation detector having the same or another resolution. In order to determine the average length a signal based on the alternating current voltage portion of the signal from the radiation detector having a low resolution is divided by a signal based on the alternating current voltage portion of the signal from the radiation detector having a high resolution.

REFERENCES:
patent: 3275834 (1966-09-01), Stevens
patent: 3790260 (1974-02-01), Stiller
patent: 3818200 (1974-06-01), Pilhofer
patent: 3879129 (1975-04-01), Inoue
patent: 4318180 (1982-03-01), Lundqvist et al.

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