Posted in | Level Sensors

MAXIMA+: the Fail-Safe Rotary Level Indicator

The most advanced rotary level indicator from BinMaster features a complete fail-safe system that alerts to the failure of the motor, loss of power, or failure of the electronics, which enables it to be utilized for process control.

The MAXIMA+ alerts the user to bin status via a light wired to the unit or an audible horn and is ideal for a large range of bulk solids, including pellets, powders, or granular materials.

The notification happens when the paddle is in a covered condition and stops rotating; it alerts a second time when the paddle starts to rotate as the paddle is uncovered when the bin is emptied.

The MAXIMA+ can be mounted at the top of a bin using a shaft extension or on either side of the bin.

The motor of the MAXIMA+ will ‘de-energize’ once the shaft stops turning and material comes into contact with the paddle in order to optimize energy costs and prolong motor life. BinMaster provides a range of polyethylene and stainless steel paddles in single and three-vane designs to accommodate a large scope of applications and industries.


  • Can be utilized in silos, bins, conveyors and chutes
  • Reliable point level detection for bulk solids including pellets, powders and granular materials
  • Food, gravel, concrete, feed, seed, plastics, chemicals, grain, sand, aggregates, coal and numerous other materials
  • Material density from 2 lb./cu. ft. to over 100 lb./cu. ft. 


  • Interchangeable with other rotaries
  • Visual LED indicates sensor status:n uncovered, covered and fault conditions
  • Microprocessor-based fail-safe indicator eliminates spills and process shortages from power failures, gear or motor failures
  • Triple thread screw-off cover
  • Internal, bi-directional clutch
  • Monitor fault and normal conditions
  • Adjustable sensitivity
  • Powder-coated finish
  • De-energizing motor for extended operational life
  • Numerous voltages
  • Four-bearing drive shaft assembly increases reliability and decreases wear  


  • Process Temp: Up to +400 °F (204 °C)
  • Power Requirements: 24/115/230 VAC, 50/60 Hz; 12/24 VDC, 60/35 mA
  • Output Relay: DPDT 10 Amp, 250 VAC
  • Status Indicator Relay: SPDT 10 Amp, 250 VAC (solid state relays optional)
  • Conduit Connection: 3/4” NPT
  • Shaft and components: Stainless steel
  • Pressure: 1/2 micron, 30 PSI
  • Ambient Operating Temp: -40 °F to +185 °F (-40 °C to +85 °C)
  • Enclosure Type: NEMA 4X, 5, 9 &12
  • Enclosure: Die cast aluminum, USDA approved powder coat finish
  • Mounting: 1-1/4” NPT
  • Approvals & Certifications: CSA/US Class II, Groups E, F, & G
  • Ex II 1/2D c Ex tb IIIC T138C Db (Ta = -20 °C to +85 °C)

Video Credit: BinMaster

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