USTER HVI1000, Instruction Manual

Page: 120 / 238

USTER®
HVI 1000
Instruction Manual
Uster Technologies, Inc. Chapter 6
(3/08) System Testing
-
Page 6-26
9.3 L/S, Uniformity, Elongation
The Length/Strength Module measures two cotton samples
simultaneously; it automatically prepares the cotton sample beard,
positions the comb in place for the measurement, performs the
measurements for length, uniformity, strength, and elongation and
discards the excess cotton sample fiber. The final data product for LS
system testing is an average of the readings from the comb(s). An
inadequate reading will invalidate all LS data.
_ To begin the measurement process, place approximately 10
grams of fiber in each sampler drum. Place the cotton sample in
the bottom of the sampler drum(s), so that none of it is visible
over the edge. It is not necessary to measure the quantity; this
figure just provides an approximate range of the quantity of
cotton it takes to obtain consistent test results.
_ The LS box shows 1/2 prior to the first test and shows 2/2 prior
to the second test.
_
Make sure your hands are clear of the doors that cover the
sampler drums and press the
S
TART
button on the Length/
Strength cabinet.
CAUTION:
Make sure your hands, jewelry, clothing, and any other
loose items are clear of the door that covers the sampler
drum(s) before you press the start button that begins the
cotton
sample preparation and measurement process.
_ The sampler drum door is closed automatically and a comb is
prepared from the material in each of the sampler drums.
_ The comb(s) slide along the comb track until positioned in front of
the brusher. As soon as the comb is in place, the brusher
automatically removes loose fibers from the beard while
simultaneously cleaning and aligning the remaining fibers. It is
then moved along the comb track to the breaker where the tests
for length, uniformity, strength, and elongation are performed.