Method and apparatus for providing primary coincidence correctio

Details Method and apparatus for providing primary coincidence correctio Method and apparatus for providing primary coincidence correctio

1975-04-03

1977-02-22

Miller, Jr., Stanley D.

Registers

Coded record sensors

Particular sensor structure

235 92PC, 307234, 324 71CP, 328115, H03K 520, G01N 2700

Patent

active

040094430

ABSTRACT:
A method and apparatus for correcting a particle pulse count subject to coincidence error is disclosed wherein particle pulses, developed in response to passage of particles in a particulate system through a sensing zone, are counted for a predetermined period of time. The predetermined period of time is increased or extended in response to each pulse counted by a time increment that is related to a characteristic of the counted pulse, such as the pulse width, duration, or amplitude. The total additional time period allows the counting of additional particle pulses such that the total count at the end of the extended time period is an error corrected count for the number of particles detected in the predetermined time period.

REFERENCES:
patent: 3171892 (1965-03-01), Pantle
patent: 3600688 (1971-08-01), Booth
patent: 3611157 (1971-10-01), Hughes

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