Overview
The Conveyor Components CR-1A roto-level control is an electro-mechanical paddle-type level indicator designed for reliable material detection in industrial bins and hoppers. The Model CR is a rotating paddle style level control that can indicate the presence (or absence) of dry bulk material within a bin or hopper. This model provides continuous monitoring without requiring vessel opening, making it ideal for bulk-handling operations across aggregates, chemicals, plastics, fertilizers, grains, and food processing industries.
Key Features
- Paddle-wheel design: A paddle wheel is connected to a low torque AC synchronous motor that rotates continuously inside the bin at 1 RPM.
- Microswitch actuation: When the paddle meets resistance from accumulated material, it transfers torque to microswitches rated at 20 amps, which can control start-stop operations of conveyors, elevators, feeder systems, and provide warning alarms.
- Field-adjustable controls: Each unit comes standard with a field adjustable time delay as well as a field adjustable sensitivity mechanism.
- Rugged construction: Units are designed to be dust-tight and weatherproof, with explosion proof models available as an option.
- Flexible mounting: The model CR ROTO-LEVEL control can be either top mounted or side mounted on most types of storage bins.
Technical Specifications
The CR-1A is engineered for single-phase electrical systems with straightforward motor and control ratings for straightforward installation and troubleshooting.
Typical Applications
- Aggregate, sand, and gravel handling
- Chemical and plastics processing
- Fertilizer and grain storage
- Flour, mineral, and powder operations
- Monitor material overflow, empty bins, plugged chute conditions, jammed conveyors, bag house dust levels, product spillage, or damaged equipment.
Compatibility & Replacements
Compatible With
- Industrial bin and hopper systems (top or side mount)
- Conveyor feeder systems requiring level detection
- Elevator and material handling control circuits
- Standard 120VAC single-phase supply (50/60 Hz)
Replaces / Drop-In Replacement For
The CR-1A is the base single-microswitch configuration. Other CR-series models include CR-2A (dual switch) and CR-3A (triple switch) for expanded control functions. Verify compatibility with your system integrator before ordering alternative configurations.
Works With
- Standard industrial 120VAC 50/60 Hz power systems
- Conveyor start-stop controls and interlocks
- Alarm and audible/visual warning systems
- Programmable logic controllers (PLCs) via relay contacts
- Manual motor starters and soft-start drives
