Kett C-600, User Manual

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1. Measurement Principles and Characteristics
■ Measurement Principles
This device is designed to measure the whiteness of rice based on our
own uniquely developed standard. The C-600 measures reflectivity and
utilizes two blue LEDs as its light source. The light from the blue LEDs
shine onto the sample surface at a 45 degree angle. Next, the amount
of reflected light reflected is measured with a photo diode. The whiter the
sample, the more light reflected back and detected, and thus a higher
measurement value is registered. The whiteness of rice correlates directly
with the milling percentage of that rice. Therefore, you can use this device
to indirectly measure the milling percentage of a rice sample.
■ Characteristics
This device is lighter and more compact than our previous C-300 model.
Furthermore, using blue LED light sources allows for a longer light source
lifetime, reduced power consumption and reduced heat generation. Sensitivity
calibration when the device is turned on has also been reduced, allowing you
to begin measurements faster when compared to previous models.