USTER®
HVI 1000
Instruction Manual
Uster Technologies, Inc.
Chapter 6
(3/08) System
Testing
-
Page 6-25
9.2
Micronaire
Follow the steps listed below for micronaire testing.
_
Pull a tuft of cotton from each side of the bale. Place the cotton
sample on the balance to be weighed. If the weight of the cotton
sample is between 9.5 and 10.5 grams, the micronaire reading
is accepted and displayed on the screen. If the mass is outside
the valid weight range, the cotton sample must be weighed
again and the test repeated.
CAUTION:
Make sure your hands, jewelry, clothing, and any other
loose items are clear of the color/trash tray before you
press the start button that begins the measurement
process.
_
Place the fiber in the micronaire chamber and close the MIC
door. Confirm that the MIC box shows testing 1/1 when the
MIC door closes. The test begins automatically.
_
Once the test is completed, the micronaire chamber door opens
and the cotton sample is ejected.
If the micronaire value is less than 2 (<2) or, if it is greater than 7 (>7),
the message 'Invalid MIC' is displayed, even if lot limits are not set. If
this occurs, the micronaire test must be repeated.
The weight range for valid cotton samples is between 9.5 and 10.5
grams. After a short period of time an operator can easily pull a cotton
sample that is within this wide weight range. Occasionally tare the
balance to eliminate any drift from zero that might occur.
Note:
The Micronaire measurement is used to calculate the values for
Length, Uniformity, Strength, and Elongation. Micronaire measurement
must be completed before testing on a bale is considered DONE.
Содержание HVI1000
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