Create a free Industrial Equipment News account to continue

BinMaster Rotary Level Indicator

Used for high and low-level inventory detection in bins, tanks, silos, hoppers, and chutes

A rotary level indicator is used for high and low-level inventory detection in bins, tanks, silos, hoppers, and chutes.

Rotaries are commonly used as a high-level indicator as a vessel is filled or low-level indicator when a vessel is emptied.

A rotary is installed through the vessel wall or on the roof of the vessel using a mounting plate. Angled mounting plates are used on sloped roofs.

During filling, the rotary paddle turns until material reaches the level of the paddle and prevents the paddle from turning.

The resistance causes the motor to trigger a switch that is wired to an alarm, horn, process equipment, or control panel, alerting operators when bins are full without the rigors and risks associated with manually checking.

Sometimes, a relay is used to shut off process equipment.

While the paddle is stopped, the motor goes into a de-energized state.

A rotary can also be used as a low-level control.

As the vessel is emptied and material drops below the paddle, the motor re-energizes and the paddle begins to rotate.

An alert status can be sent to an alarm or horn, or a relay can be used to start up process equipment.

BinMaster offers a standard rotary, the BMRX, and the MAXIMA+ which includes a complete fail-safe system that alerts to the loss of power, failure of the motor, or failure of the electronics indicated by a light on the top of the unit.

Both the BMRX and MAXIMA+ are offered with many customizations for rotary level indicators including:

  • Hazardous location approvals.
  • A wide assortment of paddles for different types of materials.
  • A unique collapsible paddle for installation of the rotary without entering the bin.
  • Vertical rotary extensions for top-mounted rotaries used for high level detection in made-to-order custom lengths up to 144”.
  • An adjustable top-mount rotary that can vary the length of the extension from 6” to 72” to accommodate differing material levels.
  • Horizontal rotary extensions for side-mounted applications through bin walls up to 12” thick.
  • A stainless-steel process connection that can be added when a rotary is used in corrosive materials or in food processing operations.

With in-house manufacturing and a central location, BinMaster offers custom configurations and short lead times to meet all your rotary needs.

BinMaster has been a trusted sensor manufacturer for more than 50 years. We'll always make sure that your application levels up.

For more information, visit, or call 800-278-4241

More in Video