Manual De Uster Tester 3
The instrument or M/C by which unevenness (U%), co-efficient of variation of mass (CVm%), yarn hairiness, imperfection index (IPI) and thick, thin place, neps etc of, roving sliver can be measured or calculated is called Uster Evenness Tester or Uster Tester – 5The evenness of yarn is an important index of quality control of textiles, so the researches about the yarn evenness test method have been the hotspot in the textile measurement for recent years. In this article, by uster evenness tester. The usual yarn evenness testing methods mainly include the length measurement and weight measurement method, the visual measurement method and the Uster evenness tester method. Because of large computation, the length measurement and weight measurement method is only used in the research works requiring higher nicety or adjusting and measuring unevenness instruments, and it is rarely adopted in general tests. Because the visual measurement method is quick and convenient, and it can comprehensively evaluate the appearance quality of yarns, and it is a very usual method in productions, but it has many deficiencies such as large man-made factor influences, random character, non-objectivity and bad repetition character, and its testing results are hard to be reserved.The can get rid of the influence of man-made factors to the testing results, and it can quickly and objectively measure the unevenness of yarns, so it is applied widely. However, as viewed from its testing principle, it still has certain deficiencies. First, the Uster CV value of yarn evenness can only denote the unevenness degree of yarns, but can not reflect the uneven structure of yarns.
Second, the Uster CV value of yarn evenness only considers the average of the unevenness degree of yarns, and can not reflect the uneven waves with different characters on yarns, i.e. It ignores the discrete character of yarn unevenness. But these uneven waves of yarns would largely influence the unevenness of cloth cover. Third, when measuring blended yarns, because both the properties of fiber materials and the dielectric coefficients are different, and if the blended evenness of fibers in yarns is bad, the capacitance will change, which will influence the CV values. If above factors can not be controlled effectively, the nicety of the testing result of yarn unevenness will be influenced. Fourth, the nicety of testing values will be impacted by the testing conditions (the atmosphere state, the historical reversion condition of samples, the time of humidifying treatment).Principle of Uster Evenness Tester:Raw material as well as problem can be detected by the measurement of which is done by Uster evenness tester or uster tester-5.The quality parameter is determined by a capacitive sensor.
In this case the yarn, roving or sliver is passed through the electric field of a measuring capacitor. Mass variation of the material causes the disturbance of the electric field which are converted into electric signal. Which is proportional to the mas variation of the material. The unevenness is recorded as a diagram.Advantage of Uster Evenness Tester:. The CV% measured by Uster give a measure of variation of weight per unit length. This instrument measure the irregularity of material at high speed (2-100ft/min). It can show both% of M.D & C.V.
Manual De Uster Tester 3 Price
Of material. The recorder of pen can work at a high speed of 100yds/minDisadvantages of Uster Evenness Tester:.
The result obtained by this M/C is affected by moisture content of material. This M/C can not detect the thick and thin place.
In this instrument material up to a certain thickness can be tested.Uses of Uster Evenness Tester:. Evenness measurement of yarn, roving and sliver.
Measurement of imperfection ( thick,thin place, eps). Mass analysis. Spectogram analysis/frequency analysis. Fabric simulation i,e before making fabric. The yarn gathering knowledge about the quality of the fabric. Variation of trend analysis.Uster Statistics:The uster company takes test result from the whole world, tested by their own equipment. They disclose statistics of the representative sample periodically.
This statistics is known as Uster statistics.The uster statistics are quality reference figures which permit a, sliver, and yarn with regard to world Production.Last uster statistics for cotton fiber and yarn was published in 2007.Author of This Article:Noor Ahmed RaazB.Sc. In Textile Engineering (CU)Specialized in Apparel ManufacturingLecturer, Department of Textile EngineeringAtish Dipankar University of Science & TechnologyEmail.
USTER TESTER 3 EVENESS CONVERTER - Year 199501 UT3-YC USTER Automatic creel for cops01 UT3-EC42 USTER Sensor H Hairness tester01 UT3-EC5 USTER Sensor D01 UT3 USTER Sensor B01 UT3 USTER Absorber type B01 UT3-SP USTER Signal processor01 W1/1 USTER Printer01 UT3 USTER Stabilizer01 USTER Air filters and pressure control01 UT3 USTER TENSORAPIDYear 1995Strength tester automatic1000 Newton max. Straight test01 UT3-SP USTER Signal processor01 W1/1 USTER Printer01 UT3 USTER StabilizerSpare parts and accessories01 HVI 900 B USTER SPINLABYear 199501 Colour Trash Module01 Micronaire Module01 Length/ straight Module02 Monitors01 Fibre samplerAccessories included in the deal:Instruction manualsElectrical diagramsUster tool Box completeSpare parts and accessories01 AUTOSORTER III USTERYear 199301 PR-503 UAS4 Mettler Toledo scaleD=0,01 / 0,001g.01 LC - 43 Printer01 A.F.I.S.
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