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Measuring principle

The operation of Monitor's rotary paddle bin level switch is quite simple. The unit is installed through the wall of the vessel, so that the paddle protrudes inside the vessel. A small electric motor drives a paddle which rotates freely in the absence of material.

When the paddle is impeded by material, the motor rotates within the housing which triggers two switches. The first switch is a ¡°dry¡± electrical contact closure that is available to control a process function or alarm circuit. The second switch cuts the power to the motor, preventing a locked rotor condition, thus extending motor life. This also activates the signaling device which is wired through that same motor switch. When the material level drops, the loaded stretched tension spring returns the motor to its original running position and the unit is reactivated.

Application guidelines

Monitor'S rugged, reliable design make the paddle bin level indicator compatible with many granular, pelletized and powder bulk applications. Monitor paddle switches can be used for high level indication of materials over 10 lb/ft (160 kg/m) and for low and intermediate level indication for materials over 5 lb/ft (80 kg/m. Monitor paddle units can be installed almost anywhere dry bulk materials are stored, including bins, hoppers, silos and tanks. Monitor's KA unit is the most popular of our paddle bin monitors. This model is ideal for use in standard applications with a wide variety of materials. The KAX incorporates all the features of the KA model, but is specially designed to meet explosion-proof standards.

Typical Applications include, but are not limited to:
Feed
Silica Sand
Rocks
Pellets
Wood
Calcium Dust
Rubber
Metals
Regrind
Coal
Peanuts
Malt
Clays
Resin
Limestone
Grain
Foundry Sand
Pre-Mix Ingredients
Rawhide
Sawdust 
Coffee

Product list
  • ROTARY PADDLE BIN MONITOR The operation of Monitor¡¯s paddle level control products is quite simple. The unit is installed through the wall of the vessel, so that the paddle protrudes inside the vessel. A small electric motor drives a paddle which rotates freely in the absence of material.
    Monitor¡¯s KA unit is the most popular of our paddle bin monitors. This model is ideal for use in standard applications with a wide variety of materials. The KAX incorporates all the features of the KA model, but is specially designed to meet hazardous location standards.

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