Loss-in-weight feeder system
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United States of America Patent
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Jan 14, 1992
Issued Date -
N/A
app pub date -
Nov 21, 1989
filing date -
Nov 4, 1987
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A loss-in-weight feeder for discharging a flowable material from a reservoir through a controllable discharge member, including a closed loop controller configured to compare the actual rate at which material is discharged from the reservoir to a desired discharge rate. During the 'refill' mode of operation, the desired discharge rate is adjusted as a function of both the density of the incoming material and the current weight of material in the reservoir. During steady-state operation, the discharge rate is adjusted in accordance with, inter alia, short term changes in the actual discharge rate which exceed a predetermined threshold value.
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