Model YG020B Electronic Single Yarn Strength Tester consists of the main tester and the printer. The outline of the tester can be seen on the following figures.

All operations of the tester are done under the control of the built-in computer. The tension sensor in the tester is connected with the gripper. When yarn is tensed, the tension is measured by the sensor, and the elongation can be calculated by the stepping motor.

The main machine of the tester consists of the base box and the vertical column. In the base box, there is the electrical control part on which the control panel and the yarn holder are installed. In the vertical column, the motor is installed and the motion can be transmitted by the toothed belt and lead screw. The upper and lower gripper are gripped by screw style and the lower gripper connected with the screw nut can be moved up and down.

When test is made, only data such as count of yarn, packages of sample, time of tests, velocity, length and print mode are set can test be operated. The test results are displayed on the window and printed out on the printer and the statistical results can also be printed out via the computer.