Posted in | Level Sensors

BMRX-100: Mechanical Rotary Level Indicator

The next-generation BMRX-100 is a low-cost approach to monitoring vessel levels in solid materials with bulk densities ranging from 2 lb. to over 100 lb./cu. ft.

The BMRX-100’s simple operation and dependable mechanical design make it perfect for level indication in storage and processing environments where hazloc certification is not required. A continuously turning paddle rotates until it is stopped by material, then closes a relay to indicate a change in status.


The BMRX-100, similar to other BinMaster rotary devices, is a high-level alert system that prevents vessel overfilling. When mounted near the bottom or in the cone of the vessel, it alerts to low levels to help prevent material shortages that can lead to the shutdown of production processes.

When a full or empty state occurs, the BMRX-100 can be wired to a light or horn to sound an alert. It can also be wired to stop an operation when a vessel is full, such as halting a grain leg or conveyor.

  • Conveyors: Identify overloaded or empty conveyors
  • Level detection: Point-level detection of bulk solids
  • Material outages: Low-level alerts to remove empty vessel conditions
  • Overflow prevention: High-level alerts to prevent overfilling
  • Plugged chutes: Detect when chutes get clogged with materials
  • Process control: High, demand, and empty level indication

Simple, Electromechanical Measurement for Ordinary Storage and Processing Operations

  • Agriculture: Bins holding grain, feed, fertilizer, seed or bulk ingredients
  • Bulk Solids: Wood pellets, chemicals, food, and more
  • Construction: Concrete and cement batch plants and silos of roofing granules
  • Plastics: Detect the level of plastic pellets in hoppers or silos
  • Mining: Sand, aggregate, gravel, and coal storage and surge bins

Accessories for the BMRX-100

  • Adjustable top mount: The high-level threshold can be adjusted using the coupling that can be moved up and down a 72” shaft.
  • Mounting plates: Carbon and stainless-steel choices in 0° 10°, 20° and 30° angles for mounting on top of sloped roofs.
  • Paddles: With a wide selection of paddles, the BMRX-100 rotary adapts to light, medium, and heavy weight materials. Use one of BinMaster’s collapsible paddles to prevent entering the vessel when you install or replace the rotary. Add a stainless-steel process connection to ensure durability in corrosive or caustic materials.
  • Point level alarm panel: Vessel level conditions are provided through a blinking light and audible alarm with up to 24-0 level indicator stations.
  • Quick disconnect: Hardwiring can be replaced, making it easy to install and remove the rotary for maintenance, cleaning, or replacement. 


  • Voltage: 115 VAC, 220 VAC, 24 VAC
  • Relay Output: DPDT 10 Amp, 250 VAC Max
  • Ambient Temperature: –40 °F to +185 °F (–40 °C to +85 °C)
  • Process Temperature: Up to +240 °F (116 °C)
  • Enclosure Type: NEMA 4X, 5, 7, 9, and 12
  • Enclosure Material: Die cast aluminum, powder coat finish
  • Mounting: 1.25” NPT, 1.5” NPT, 2.0” Tri-clover
  • Conduit Connections: Two 3/4” NPT
  • Shaft: Stainless steel

Other Equipment

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