Device for measuring the quantity of coal in a ball grinder
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United States of America Patent
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Nov 23, 1999
Grant Date -
N/A
app pub date -
Jun 23, 1995
filing date -
Jun 24, 1994
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A device for continuously measuring the quantity of coal inside a ball grinder including an ultrasound wave or electromagnetic wave emitter and a wave receiver. The emitter and the receiver are disposed so that the wave passes through at least part of the interior of the grinder. The receiver is associated with an electronic circuit for deducing the quantity of coal by comparing the signal received with data obtained from previous calibration measurements.
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