A system for determining in near real-time the product density value of a zone of preferable small fungible products within an acceptable size range in a flow of products includes a sample input piping from a bin or piping of products, a sampling volume for fixing the size of a sample, a scale, a processor, an imaging table and an associated camera. A more stable superconducting structure with which high electric current strengths may be transported is thereby provided. The data comparison processing may include only one comparison with the end address data.