Level Measurement for Underground Mine Ore Passes

Accurately measure ore levels for underground rock feeds in metal ore processing

Prevent Frame Damage and Process Disruption in Ore Passes

The mining ore pass is a large bin carved into the rock with a steel frame (grizzly) at the bottom to control feed of the ore into cars for transportation to the top. The walls are uneven and overall distance to the feed frame can be around 225 ft (68 m). Application challenges include the importance of knowing the level measurement as it drops to the area near the feed frame. The level must not go below a minimum level above the frame so that it acts as a buffer from falling rocks and prevents damage to the frame. Also, the ore can be of different grades and sizes and very dusty making level measurement tricky.

Product Solutions

Rosemount™ 5408 Level Transmitter - Non-Contacting Radar

The Rosemount™ 5408 Non-Contacting Radar Level Transmitter uses enhanced technology and Human Centered Design to deliver accurate, reliable measurements on both liquid and solid materials. Using two-wire FMCW technology the Rosemount 5408 deploys a continuous echo to maximize radar signal strength and produce a more robust and reliable measurement. Delivering ease-of-use at every touch point, the Rosemount 5408 uses an intuitive software interface to guide the operator through installation, commissioning, proof-testing and maintenance. Powerful onboard diagnostics suite proactively monitors transmitter health and alerts if there is an issue. Safety certified to IEC 61508 for SIL 2 applications, the Rosemount 5408:SIS reduces cost of risk, increases efficiency and protects people and the environment.

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