LH-703 ETT


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Lawson Hemphill Inc. Machines and Instruments to Test and Measure Fabrics and Yarns
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1658 G.A.R Highway, Suite 5

Swansea, MA 02777, USA

Tel:+1 (508) 679-5364

Fax: +1 (508) 679-5396

Email: Information@lawsonhemphill.com

Electronic Twist Tester

Twist has a critical effect on the physical properties of yarn such as softness, tensile strength and cover factor.  Optimum twist level is important for both yarn end-users and production plants.

Lawson Hemphill Electronic Twist Tester, ETT meets applicable standards for measuring twist in the yarn.  The machine is designed to apply Untwist-Retwist Method, Direct Counting Method and Schutz Method, which is special mode for Open-End yarns.

The instrument is a motorized unit with two clamps.  One clamp is on adjustable stand to select yarn test length while the other clamp rotates in S or Z direction for twist removal.

The ETT Control Panel allows selection of the twist test method.  At the end of the test, Panel Display will show the Average Twist Count, Standard Deviation, Minimum and Maximum Twist counts.  Result data can be printed or sent to a computer.

Untwist-Retwist Method, Direct Counting Method and Schutz Method

Variable Clamp Distance (test length) between  1-50cm (0.5 to 20 inches)

Yarn Elongation Indicator up to 100mm with 1mm accuracy

Electronic Twist Counter on Control Panel Display

Test End Indicator with Zero LED

Auto Stop at test end