I. Product ApplicationThis instrument is used for determining the twist of various yarns.The properties of the instrument are in conformity with the new national standard GB2543.1-GB2543.2 Textiles- Determination of twist in yarn, the international standard IS02061 Textiles - Determination of twist in yarn - Direct counting method, the standard of the former Ministry of Textile Industry FJ 547 Test method for open-end gray cotton yarn, and the national industrial standard FZ/T10001 Determination of twist in open-end yarn – untwist-retwist method.II. Main Technical Specifications1. Measurement range: for all kinds of yarns.2. Yarn tension: adjustable by a set of weights depending on the type of yarn.3. Rotating speed of gripper: 1500 r/min, 800 r/min, slow inching speed.4. Length of measurement: 25, 50, 100, 200, 25t), 500 mm.5. Number of measurements: no more than 99 cycles.6. Measurement method: a. Direct counting method; b. Untwist-retwist method; c. Double untwist-retwist method; d. Three-time untwist-retwist method.7. Method of measurement data output: a. Display output b. Print output: Xi for twist value of each test; for average twist value of each batch of tests; Nil for number of tests; Nl for number of tests below the average twist; s for mean square deviation; H for coefficient of mean deviation; cv for coefficient of variation; and for I twist factor.8. Power source: 220V 10%, 50Hz.9. Power requirement: low than 25W (main unit).10. Operational environment requirement: temperature 20°C 10°C.
đang được dịch, vui lòng đợi..