The BinMaster MultiBob inventory management system allows from two to 32 SmartBob sensors to be mounted in a single bin, tank, silo or any other vessel containing powders or bulk solid materials. The measurement data from each sensor is averaged in the advanced eBob software based upon user-defined parameters to provide a single level measurement and percentage full for the bin. By taking and reporting measurements in multiple locations, there is more detailed data available to users about the material in their bin. Depending on how many Smart Bob sensors are mounted in the bin, the user can use the data to determine conditions such as cone up or cone down, whether there are high and low spots in the bin, and which filling or emptying points they want to target in multiple-fill, multiple-discharge point bins.

The MultiBob system is useful when installed in any bin where the user wants more data to determine inventory levels. The measurement data as reported in feet or meters by the SmartBob sensor is very precise and repeatable. Each sensor measures in the same location every time, detecting level changes in bins containing difficult to measure material, such as large diameter bins where material tends to pile up. Grain bins such as 105’ or 130’ diameter or million bushel bins as well as bins with multiple filling and emptying points are common applications for MultiBob. MultiBob can be used to measure the level in covered storage bins, flat storage warehouses and stockpiles where a single measurement is not adequate.

In addition to multiple point measurement, the advanced eBob software allows the user to add a strapping table to the bin parameters to further personalize the data for a particular bin. Strapping tables are helpful when the material in the bin tends to compact, which makes the bulk density of the material higher at the bottom of the bin than the top. In a non-linear vessel, the addition of a strapping table will improve the estimated volume of material in the tank


• Two to 32 SmartBob sensors on a single vessel
• Software averages level for selected sensors
• View levels for one sensor or all sensors
• Can indicate cone up or down conditions
• Detects high and low spots
• Strapping tables for custom vessel configuration
• Takes measurements at user-defined intervals
• Initiate measurements on demand
• Automated alerts for various alarm conditions

• Power Requirements: 115/230 VAC 50/60 Hz
• Ambient Temp: -40°F to +185°F (-40°C to +85°C)
• Process Temp: Up to 500°F (260°C)
• Measurement Range: Up to 180’
• Measurement Rate: 2 feet per second
• Accuracy: ± 0.25% distance measurement accuracy
• Mounting: 3”- 8” NPT
• Enclosure: Molded polycarbonate
• Approvals & Certifications: Listed for Class II, Groups E, F, & G Hazardous Locations
• Enclosure Type: NEMA 4X, 5, 9 & 12


• Any bin where the user wants more measuring points
• Bins containing material prone to accumulate in piles
• Large diameter bins where material tends to be uneven
• Grain bins such as 105’ or 132’ diameter or million bushel bins
• Bins with multiple filling and emptying points
• Operations where more data is desired to determine inventory levels
• Bins containing difficult to measure material
• Covered storage bins and flat storage warehouses and stockpiles 

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Power Requirements

Ambient Temperature Range

Process Temperature

Measurement Range

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Enclosure Type

SBR II MB N/A 115/230 VAC 50/60 Hz N/A -40 to +85 ºC-40 to +185 ºF N/A Up to 500°F (260°C) N/A Up to 180' N/A 2 feet per second N/A ± 0.25% distance measurement accuracy N/A 3"-8" NPT N/A Molded polycarbonate N/A Listed for Class II, Groups E,F & G Hazardous Locations N/A NEMA 4X, 5, 9 & 12
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