Overview
Monitor Technologies KA rotary paddle bin level indicators are reliable point-level control sensors designed for detecting and monitoring dry bulk materials in bins, silos, hoppers, and storage vessels. The KA unit is the most popular paddle bin monitor, ideal for use in standard applications with a wide variety of materials. These rugged and economical sensors are easy to install, proven performers in a wide variety of bulk materials.
Key Features
- Automatic motor shutoff when the paddle is in a stalled position, extending motor life and minimizing maintenance
- Twist on/off cover design requires no bolts—hassle-free housing
- UL, CSA and ATEX/IECex approvals available
- Can eliminate bin overflow, maintain predetermined material levels, indicate conveyor plugging, and provide multiple level control functions
- Compatible with grain, feed, food processing, cement, aggregates, coal, plastic pellets, pharmaceuticals, wood chips and more
Technical Specifications
- Motor Voltage: 115 VAC, single-phase
- Switch Type: SPDT (Single Pole Double Throw)
- Switch Rating: 15A @ 250 VAC per contact
- Process Connection: 1-1/4″ NPT
- Operating Temperature Rating: +300°F (+149°C)
- Weight: Approximately 8-1/2 lb (3.9 kg)
- Certifications: UL, CSA, CE mark
- 2-Circuit Configuration: Motor SPDT switch plus isolated second SPDT switch for control outputs
Typical Applications
Monitor paddle switches can be used for high-level indication of materials over 10 lb/ft³ (160 kg/m³) and for low and intermediate level indication for materials over 5 lb/ft³ (80 kg/m³). Common applications include grain storage systems, cement silos, coal hoppers, food processing bins, pharmaceutical powder vessels, and plastic pellet hoppers. The KA excels in dry bulk solids monitoring where reliable point-level detection and automatic shutoff protection are critical.
Compatibility & Replacements
Compatible With
- Standard industrial 115VAC single-phase power systems
- Control circuits and alarm systems requiring SPDT relay outputs
- Pneumatic and mechanical conveyor systems
- Grain, feed, and material handling installations
- Bins, silos, hoppers, and bulk storage vessels
Replaces / Drop-In Replacement For
The Monitor Technologies KA is not a direct replacement for other manufacturer models. Verify compatibility with your system integrator before ordering to ensure proper fit with existing mounting, voltage, and control circuit requirements.
Works With
- Standard industrial relay logic and PLC input modules accepting SPDT switch closure signals
- Electromechanical and solid-state alarm circuits rated for 115VAC/SPDT switch outputs
- Conveyor control systems and material handling automation
- Local and remote level indication networks
