USTER®
HVI 1000
Instruction Manual
Uster Technologies, Inc. Chapter 6
(3/08) System Testing - Page 6-4
♦ Uniformity Index – The ratio, expressed in percent, of two
length measurements.
♦ Strength – The relationship of the breaking force to the mass of
fibers broken, corrected for MIC and modified by calibration
constants.
♦ Elongation – This is the distance to the maximum stress-strain
curve, less the distance attributed to crimp, multiplied by 100
and then divided by the break gage (1/8 inch).
♦ SFI (Short Fiber Index) – This value is measured from the
Fibrogram curve.
♦ SCI (Spinning Consistency Index) – This value is derived from
Length/Strength, MIC and Color/Trash
(if measured)
.
♦ Maturity – This value is derived from L/S and MIC data.
♦ Micronaire (MIC) – Micronaire value must be determined
before Length, Strength, Uniformity, and Elongation.
The following items are displayed if the corresponding options are
installed and selected:
♦ Leaf Grade – This value is related to the trash area and particle
count.
♦ Moisture – This value is measured from the cotton sample.
♦ UV – This value is measured by the 380 Fibroglow and
measures fiber fluorescence.
(optional)
♦ NEPS– This value is measured by the 720 NEP Tester and
measures neps in cotton fibers.
(optional)
♦ Rd – This field contains the color test results for %Rd (lightness).
The three-digit Rd number represents the average of the color
observations for Rd.
♦ +b – This field contains the color test results for +b (yellowness).
The three-digit +b number represents the average of the color
observations for +b.
♦ Color Grade – This value is measured by the Color Module
and can consist of up to four alphanumeric characters.
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