USTER HVI 900 - HVI 900 System Modules; Length;Strength Module

USTER® HVI 900 Instruction Manual
Uster Technologies, Inc. Chapter 1
Version 4.0 (1.99) Introduction - Page 1-3
5 HVI 900 System Modules
The HVI 900 system is housed in two floor-standing cabinets: the larger
cabinet contains the Length/Strength Module and the smaller cabinet
contains the Micronaire and Color/Trash Modules. Included with the
system are an alphanumeric keyboard, a monitor and a balance. The
monitor displays the menu selections, operating instructions and test
results. As tests are completed for each sample, the results can be
transmitted to a printer and/or an external computer system, if
available. The HVI 900 system consists of modules that can be
combined in a variety of ways. Your system may include any or all of
the following components: the Length/Strength Module, the Micronaire
Module and the Color/Trash Module.
5.4 Length/Strength Module
The Length/Strength Module optically determines fiber lengths and
associated uniformities. The length, known as the “elongation,” is
calculated by averaging the length of distance the fibers will extend
before breaking. The Strength is determined by measuring the force
that is required to break a sample of a known mass.
The Length/Strength Module of the HVI 900 consists of a brushing
mechanism, an optical system for measuring length and uniformity, and
a clamping jaw system for measuring strength and elongation. It is
operated by placing a sample prepared using the Fibrosampler 192 in
the comb track of the Fibrograph Plus where it is automatically brushed
and moved into position for testing.
The brushing and measurement mechanisms are located on the top of
the left cabinet. A lint/waste box and blower system is located
underneath the left cabinet.
Version 3 (automatic) instruments operate differently than previous HIV
900 Semi-Automatic systems as a result of the following features being
added to the instrument.