USTER®
HVI 900
Instruction Manual
Uster Technologies, Inc..
Chapter 13
Version 4.0 (1.99) Fibrosampler - Page 13-1
Chapter 13 Fibrosampler 192
3 General Information
3.4 Purpose of the Instrument
The Uster Technologies’ Fibrosampler 192 is an instrument that uses a
Fibrocomb to form a sample beard of randomly selected fibers. The
beard, which is held by the Fibrocomb, is placed in Uster Technologies’
Fibrograph to test for span length or the HVI Semi-Automatic to test for
span length, length uniformity, and strength (tenacity).
The instrument responds to operator technique so that with a little
experience, high-quality samples can be produced time after time for
statistically reliable and repeatable results.
3.5 Description
The Fibrosampler 192 is a floor-standing unit that consists of a heavy
base, a support column, and a sample preparation mechanism.
The sample preparation mechanism consists of a stationary cylinder that
is open at the operator's end with a sample plate on one side and card
cloth on the other. The counter-weighted Fibrocomb holder is attached
co-axially to and rotates around the cylinder.
A sample beard is gathered and prepared by first placing a Fibrocomb
in the holder and a sample of fiber into the drum. While the left hand
presses the fiber through the holes in the sample plate, the right hand
rotates the comb randomly gathering fiber in the Fibrocomb's needles.
Once past the sample plate, the left hand is withdrawn while the right
hand continues to rotate the sample beard over the card cloth, which
aligns and cleans it of loose fiber.
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