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BMRX Standard Rotary Level Indicator

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The BRMX rotary paddle bin level indicator provides reliable point level detection and measurement of dry bulk solids in bins, tanks, silos, hoppers and conveyors for materials including grain, feed, plastic pellets, cement and aggregates. Mounted on the top or side of a bin, the BinMaster BMRX alerts operators when bins are full without the rigors and risks associated with climbing and continuously checking bins levels. When material is not in contact with the paddle, the paddle rotates freely. When the paddle comes into contact with dry bulk material, the paddle stops rotating and sends a signal – normally through the use of a horn or light – to alert that the bin is full.

The BinMaster BMRX features “de-energized” operation of the motor which shuts the motor down when materials is present, versus competitive rotaries which put the motor in a "stalled" condition. Power is not consumed until the bin is emptied and the drive shaft again begins to rotate – which saves on energy costs and prolongs motor life. It offers a fail-safe alert providing notification when power to the unit is lost. The BMRX rotary design includes a screw-top enclosure for easy access to motorized parts. It is CE approved and is appropriate for use in hazardous conditions when explosion proof protection is needed – featuring Class I, Groups C and D, Class II E, F, and G listings.


• Rugged construction and simple, dependable design
• Triple thread screw-off cover
• Switch selectable high/low fail-safe
• De-energizing motor for extended operational life
• Four-bearing shaft assembly reduces wear and increases reliability
• Internal, bi-directional clutch
• Various voltages available
• DPDT relay output, 250 VAC, 10 Amp
• Dual conduit entrance
• Removable wiring terminals
• Interchangeable with other rotaries
• Powder-coated finish
• Adjustable sensitivity


• Power Requirements: 24/115/230 VAC, 50/60 Hz; 24/ 12 VDC, 60/35 mA
• Output Contacts: DPDT 10 Amp, 250 VAC
• Ambient Operating Temp: -40°F to +185°F (-40°C to +85°C)
• Process Temp: Up to +400°F (204°C)
• Pressure: 1/2 micron, 30 PSI
• Approvals & Certifications: CSA/US Class I, Groups C & D and Class II, Groups E, F & G
• Ex II 2G 1D Ex d IIB T5 Ex tD A20 IP66 T93C (Ta = -20C to +85C)
• Enclosure Type: NEMA 4X, 5, 7, 9 & 12
• Enclosure: Die cast aluminum, USDA approved powder coat finish
• Mounting: 1-1/4” NPT
• Conduit Connections: 3/4” NPT
• Shaft and components: Stainless steel


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



Rotary Brochure
(PDF, 844KB)

BMRX Manual
(PDF, 3341KB)

Rotary Level Indicator Application Worksheet
(PDF, 235KB)

SPANISH- Folleto de Indicadores de Nivel Rotativos
(PDF, 4493KB)

SPANISH- BinMaster Catalogo Digital
(PDF, 4933KB)

(PDF, 5594KB)

Level Indicator Product Selection Chart
(PDF, 1138KB)

BinMaster Full Line Brochure
(PDF, 1250KB)

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Item #



730-0504 BMRX-115 115 VAC
730-0503 BMRX-230 230 VAC
730-0505 BMRX-24-AC 24 VAC
730-0506 BMRX-24-DC 24 VDC
730-0507 BMRX 12 12 VDC
730-0661 BMRX-24-DC 24 VDC
730-5166 BMRX-24-DC 24 VDC
  Results 1 - 7 of 7 1