Method and apparatus for determining the fill level of container

Details Method and apparatus for determining the fill level of container Method and apparatus for determining the fill level of container

1981-06-19

1984-11-06

Wise, Edward J.

Boots, shoes, and leggings

364479, 209529, 250223B, 73293, B07C 5342

Patent

active

044815956

ABSTRACT:
Containers pass through a radiation beam projected from a beam source to a detector. The detector output pulse rates at points where the container has passed partially into the beam and partially out of the beam are detected. Pulse rates during a measuring interval which lies between these points are divided by time units from a clock pulse generator to produce a signal representative of the average pulse rate during the interval. This signal is compared to a selectable reference signal. If a comparison is made, the comparator yields a signal indicative of whether or not material in the container was at a high enough level to attenuate the beam.

REFERENCES:
patent: 3094214 (1963-06-01), Wyman et al.
patent: 3908129 (1975-09-01), Akers
patent: 4055252 (1977-10-01), Klamm et al.
patent: 4182451 (1980-01-01), Watson
patent: 4276467 (1981-06-01), Dubberly et al.
patent: 4330835 (1982-05-01), Gehm
patent: 4354180 (1982-10-01), Harding

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