Device and method for measuring material level in bin using flexible resistant members
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United States of America Patent
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Sep 10, 2013
Grant Date -
Feb 3, 2011
app pub date -
Apr 25, 2008
filing date -
Apr 4, 2008
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A bin level monitoring system uses one or more monitoring devices (10) to measure a material (23) level in a bin (34). The monitoring devices (10) each have a frame (11) with at least two rigid frame members (12, 13) extending in a longitudinal direction with a space (14) between the frame members. A flexible material (22) covers the frame members (12, 13) and encloses the space (14) there between. A first resistive element (24) and a second resistive or conductive element (30) extend in the longitudinal direction of the device (10) and are arranged to move into contact with each other between the first and second frame members (12, 13) when pressure is applied by bulk material (23) in the bin (34) pressing against an outer surface of the flexible covering (22). An electric circuit (35) connected to the monitoring device (10) measures a total resistance of the free, non-contacted portion of at least one of the first and second elements (24, 30) to provide a measurement of the material level in the bin (34).
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