The document presents an overview of the High Volume Instrument (HVI) used for fiber testing, detailing its principles, components, manufacturers, and functions. HVI automates fiber bundle testing to provide consistent results on various parameters such as length, strength, and color. It allows for efficient testing of a large number of samples with minimized operator influence and quick turnaround times.

1. High Volume Instrument Presented by
Md Faisal Ahmed Biplob
ID: 191003045
Batch: 191 D(2)
Dept. of Textile Engineering
GUB
Presentation on
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2. Contents
• Definition of HVI
• Principle of HVI
• Manufactures
• Components
• Functions
• Process
• Merits
• Conclusion
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3. High Volume Instrument
HVI means High Volume Instrument which is mainly used for
fiber testing. High volume instrument systems are based on the
fiber bundle strength testing, such as, many fibers are checked at
the same time and their average values determined.
Traditional testing using micronaire, pressley, stelometer, and
fibro graph are designed to determine average value for a large
number of fibers, the so called fiber bundle tests.
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4. Principle of HVI
• High volume instrument systems are based on the fiber bundle
testing, such as, many fibers are checked at the same time and
their average values determined. Traditional testing using
micronaire, pressley, stelometer, and fibro graph are designed
to determine average value for a large number of fibers, the so
called fiber bundle tests. In HVI, the bundle testing method is
automated.
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5. Manufacturers of HVI
There are 5 companies who make rapid test instrument in the world
1.Uster Technologies, Inc.,
2.Premier Evolvics Pvt. Ltd.,
3.Lintronics (China, Mainland)
4.Changing Technologies (China, Mainland)
5.Statex Engineering (India).
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6. Components of HVI
1.Balance
2.Barcode
Reader
3.Computer
4.Monitor,
5.Keyboard
6.Printer and
7.Printer table
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7. Functions of HVI
1.Length,
2.Uniformity,
3.Short fiber index,
4.Micronaire value
5.Maturity index,
6.Strength,
7.Elongation,
8.Color and trash, and
9.Moisture content.
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8. Functions of HVI
•
Micronaire: Micronaire Reading
Measured by relating airflow resistance to the specific surface of
fibers.
Maturity: Maturity Ratio
Calculated using a sophisticated algorithm based on several HVI™
measurements.
Length: Upper Half Mean Length, Uniformity Index, Short Fiber
Index
Measured optically in a tapered fiber beard which is automatically
prepared, carded, and brushed.
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9. Functions of HVI
• Strength: Strength, Elongation
Strength is measured physically by clamping a fiber bundle
between 2 pairs of clamps at known distance. The second pair
of clamps pulls away from the first pair at a constant speed
until the fiber bundle breaks. The distance it travels, extending
the fiber bundle before breakage, is reported as elongation.
Moisture: Moisture Content
Moisture content of the cotton sample at the time of
testing, using conductive moisture probe.
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10. Functions of HVI
• Color: Rd (Whiteness), +b (Yellowness), Color Grade
Measured optically by different color filters, converted to
USDA Upland or Pima Color Grades or regional customized
color chart.
Trash: Particle Count, % Surface Area Covered by Trash, Trash
Code
Measured optically by utilizing a digital camera, and
converted to USDA trash grades or customized regional trash
standards.
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11. Standardized process of HVI Testing
This is the process flow chart of HVI
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12. Pre process of HVI
• Laboratory Atmospheric Conditions:
Testing laboratories are required to maintain conditions of
70°±1° F and 65%±2% RH. All cotton must stabilize at moisture
content level of 6.75%-8.25% prior to HVI testing.
• Instrument Calibration:
Strict calibration procedures used by all offices and Quality
Assurance Branch Known-value cottons and tiles used for
calibration, Periodic calibration checks, Data is collected,
analyzed and corrective actions taken when necessary
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13. Merits of HVI testing
1. The results are practically independent of the
operator.
2. The results are based on large volume samples, and
are therefore more significant.
3. The time for testing per sample is 0.3 minutes.
4. About 180 samples per hour can be tested and that
too with only 2 operators.
5. The data are clearly arranged in summarized reports.
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14. HVI in short
• Quality testing is one of the most important process of fabric which
can be done by HVI and other machine.
• HVI let us to check the quality of the fabric almost automatically in a
few time.
• We can get a result of large quantity of sample.
• We can get a summarized result and reports of the data needed.
That’s all from me
You can ask question for any quarry
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15. THANK YOU
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