Problems with Storage of Solids
In all types of mining and aggregate applications materials are stored or crushed in cone shaped bottom vessels. A major concern in these vessels is the plugging or clogging of the output opening of the vessel. A clogged chute, or plugging of the silo bottom can cause product backup, filling disruption, and mechanical damage to either the silo or the emptying system. Measurement of this condition is difficult as sensors inside the vessel are subjected to tremendous impact, abrasion, and the force of falling material.
"Chunk Detection" or Plugged Chute Detection
A reliable solution to plugged chute detection is an Ohmart/VEGA nuclear point level switch. Using a radiation source and a GM-17 detector, the system mounts external to the vessel and "looks through" the vessel walls to detect plugging. Programmed to ignore the common material falling through the chute, the GM-17 will activate an alarm when the material backs up, or causes a blockage. With no moving parts, and external mounting, the system can be installed without shutting down the process, and will avoid the wear of an internally mounted solution.
