USTER HVI 900 - Leaf, Area % and Count; Rd and +B; Color Grade

USTER® HVI 900 Instruction Manual
Uster Technologies, Inc. Chapter 6
Version 4.0 (1.99) HVI 900 System Testing - Page 6-9
When the STATUS MENU selection for Grade is "Off," the cursor does not
stop on the Grade field.
5.6 Leaf, Area % and Count
The measurement results for each property as they were measured by
the trashmeter are displayed by the field name.
Leaf — The Leaf Code assigned is based on where the sample falls
according to the levels determined during calibration.
Area % — This is the ratio of the total accumulated area of all the trash
particles to the area of the viewing window of the instrument.
Count — The number of individual particles of trash in the sample that
are 0.01 inch in diameter or larger.
5.7 Rd and +b
These fields contain the color test results for % Rd (lightness) and +b
(yellowness). The three-digit (xx.x) Rd number represents the average of
the color observations for Rd, and the three-digit (xx.x) +b number is an
average of the +b values.
5.8 Color Grade
The color grade is represented by up to four (4) alphanumeric
characters from the USDA, Upland, Pima, or user-defined color charts.