RN500 Optical Rice Sorter

Objective Rice Grading, Now Carried Forward by the RN700E

The RN500 is no longer manufactured. Its current replacement is the RN700E Rice Quality Analyzer. The information below is retained for owners of existing units.

What the RN500 Did

• Optical inspection and physical sorting:an RGB color line sensor and line image sensor read color, transparency, reflection, and shape of each kernel, then physically separated the sample into quality classes — five for brown rice (even, cracked, immature, discolored, dead), four for milled rice (even, immature, crushed, discolored).
• Grade to your own standard: classification thresholds could be set, stored, and recalled, letting an operator match the grading to their own criteria and apply it the same way across samples.
• Stable reference: a built-in standard reference plate kept classification consistent over time, removing the drift and subjectivity of manual inspection.

Service and Replacement

The RN500 was backed by a One Year Total Care Warranty covering parts, labor, and specification compliance, with maintenance agreements available. Owners of existing units can reach Kett for service through our regional agents, with calibration through Kett’s US and Tokyo laboratories.

Looking for the current model? The RN700E Rice Quality Analyzer replaces the RN500 with objective, operator-independent grading of brown and milled rice in a compact, standalone unit. The RN700E grades by imaging; if your operation also needs physical separation of the graded sample, contact Kett to discuss current sorting options.