Key Technology - Key Technology Tegra Optical Colour Grading and Sorting System (2021)

Applications & Use Cases

• Sorting fresh or frozen vegetables such as sprouts, peas, and green beans.
• Grading fruit for quality, colour, and ripeness.
• Detecting foreign material in nuts, seeds, and grains.
• Separating defective or discoloured items in snack foods and confectionery.
• Ensuring product consistency in processed food lines.

Typical Specifications

Typical capacity

Optical sorters of this class commonly handle throughputs ranging from 5 to 20 tonnes per hour, depending on product density and defect rates.

Power supply

Units of this type typically require a 3-phase electrical supply, commonly 400V / 50Hz in the UK.

Sorting mechanism

Utilises advanced optical sensors for colour and defect detection, combined with pneumatic ejectors for precise separation.

Control interface

Modern systems commonly feature an HMI touchscreen for operator control and recipe management.

Typical footprint

A complete system, including infeed and outfeed conveyors, will require a significant operational area, typically several metres in length and width.

Material contact parts

Components in contact with product are generally constructed from food-grade stainless steel and approved plastics.

Frequently Asked Questions

• What types of defects can this system detect?

  Optical sorters are designed to detect a range of defects including discolouration, foreign material, shape irregularities, and damaged product, based on pre-set parameters.

• Is this system suitable for different product types?

• What maintenance is typically required for an optical sorter?

• How does an optical sorter improve product quality?

• Can this system integrate with existing production lines?