6/15/2023 0 Comments Download delavan sonac 220 manualIn the Sonac© system, one sensor is connected to the Sonac© amplifier and operates essentially as a loudspeaker. An object entering the acoustic path increases the loss and the oscillation decreases. When the amplifier gain is increased to the point where its gain exceeds the loss in the acoustic path between the sensors, oscillation (feedback) occurs. Nothing projects into falling product to crush it, no motion of sensor to fracture fragile products.Ī pair of matched sensors is connected to an amplifier as a receiver (microphone) and a transmitter (loudspeaker). No moving parts to catch fibers.Įg: Puffed cereals, potato chips. Sensor is mounted flush with bin wall to prevent material build-up at sensing point. Reliably senses products with bulk densities of less than 1/4 lb./cubic foot.Įg: Yarn, chipped fibers, waste paper, trash. This sensing technique permits sensing products which are so light that they cannot be reliably sensed by other means. Reliable sensing does not depend on any specific physical or electrical characteristics of the material.Įg: Textile fibers, onion skins, popcorn, Styrofoam pellets, puffed cereals. Where material to be sensed constantly changes physical properties, eg: Municipal Solid Waste.
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