Nucleonic Non-contact weighing
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How They Work
Nuclear weight scales consist of a sealed radioactive source (or sources) in a sourceholder, a detector of radiation and an electronic interface package. The sourceholder is mounted above the conveyor (belt, screw, drag chain or vibrating) with the detector below. A fan shaped (collimated) beam of radiation is transmitted from the source through process material and conveyor to the detector. Changes in the mass of material result in changes in the amount of radiation at the detector. The greater the mass of the material, the lower the radiation field at the detector; the lower the mass of the material, the higher the radiation field at the detector.
Outputs
The electronics of the unit takes the amount of radiation revieved, adds in variables like belt or screw speed, and converts it into a useable signal such as total weight, or weight per time.
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Netherlands
