From automated systems with pneumatic lines to gravity chutes and feeders, solids flow detectors can help to improve process performance by monitoring the flow or no flow state of the process material. Monitor Technologies' SFD-2 / SFI units use microwave Doppler radar technology that makes them extremely reliable. They are also designed for non-intrusive flush mounting which means there is no probe protruding into the material flow.  

Applications...
The SFD-2 / SFI solids flow detectors can be used in a variety of applications to detect flow/no-flow conditions of powders and solid materials including feed mills & grain processing, consumer foods (cereal, flour, sugar, cocoa, coffee), dry chemicals, pesticides, detergents and more. For example, one company uses these microwave solids flow detectors to verify the flow of pellets through their various transport lines that involves a process where a horizontal screw auger is conveying pellets over to a vertical gravity chute. The chute then directs the pellets to a process down below. They have carefully placed the unit so that it detects the pellets as they fall directly across the sensor face.