Level Monitoring of Bulk Material Bin with Heater Control Function

摘要

An aggregate bin heater assembly having a bin for receiving aggregate therein and a plurality of fluid inlets supported at vertically spaced apart elevations relative to the bin for distributing a heating fluid into the aggregate within the bin, further includes a control system for controlling distribution of the heating fluid. A pressure sensor associated with at least an uppermost one of the fluid inlets so as to be arranged to sense pressure within the bin at the respective elevation. A controller determines a low pressure condition if the pressure sensed by the pressure sensor is lower than a prescribed normal pressure. A valve associated with the uppermost one of the fluid inlets shuts off the flow of heating fluid to the uppermost one of the fluid inlets responsive to determination of the low pressure condition by the controller.

主权项

1. A control system for an aggregate conditioning bin assembly having a bin for receiving aggregate therein and a plurality of fluid inlets supported at vertically spaced apart elevations relative to the bin for distributing a conditioning fluid into the aggregate within the bin, the control system comprising:
a height monitor arranged to determine if height of the aggregate is below one or more fluid inlets of the uppermost elevation; a controller arranged to determine a low level condition if said height is below the one or more fluid inlets of the uppermost elevation; a valve associated with the one or more fluid inlets of the uppermost elevation so as to be arranged to shut off a flow of conditioning fluid to the one or more fluid inlets of the uppermost elevation responsive to determination of the low level condition by the controller.