Silo-mounted sensor works like an automated tape measure

Mike Edwards   

Products BinMaster Binventory sensor silos SmartBob

The SmartBob sensor from BinMaster works like an automated tape measure. Mounted on top of the silo, the sensor drops a weighted cable to the material surface.

Upon impact, the cable retracts while counting pulses that are converted to a level measurement. Measurements are programmed at predetermined time intervals to monitor changes in inventory over time.

The sensor is ideally mounted 1/6 of the diameter from the outside perimeter for centre-fill, centre-discharge silos, the company says. This distance is proven to provide the most accurate inventory data, it adds, accounting for the angle of repose in free-flowing materials.

Level data from the sensor can be sent to the company’s Binventory software installed on a PC on a local area network. Alternatively, data can be accessed from the internet using the BinView web app on a smartphone, tablet, or PC.

A SmartBob sensor with an analog output option sends data directly to a PLC. The sensor is used in vessels up to 150 feet tall that contain solids, powders, liquids, slurries, or in brine tanks.

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