Product Feature                                                                                                                                                   

1. INTRODUCTIONS The LTTS Digital Tension Meter is a hand-held device which accurately measures the running as well as static tensions of a wide variety of process materials including yarns, fibers, wires, optical fibers, etc. It employs the "three-roller principle" of tension measurement where the outer two reference rollers are fixed to create a known angle of wrap over the middle sensing roller. The middle roller is part of a precision strain gauge sensing system which accurately measures the resulting force on the roller. This value is converted into a highly accurate and repeatable tension value using proprietary computer calibration formulas which correct for different material diameters, gravity and other critical parameters. The digital force gauge has a number of models with different force range for the user to choose, the user can select the appropriate model according to the force of tested products. The scientific test method is to use 10%~100% of the full test range. The measurement department recommends not to use <1% of the full test range. Before testing, when the instrument and the test object have been in place, press ZERO key to clear the load of the fixture. 2. FUNCTIONS AND FEATURES * High accuracy and high resolution. * Digital display with no guessing or errors. * With 4 measurement unit for selection and conversion, N, kg, lb, g. * Power is supplied by 4xAAA alkaline battery. * The Meter takes 62 tension measurements per second and displays the average of these measurements over a user-selected interval of 0.5, 1.0, 2.0 or 4.0 seconds, the Display Update Rate. * Current Value, Max. Value, Peak Value, Min Value can be displayed at the same time. * Optional data output function. Measurement data can be transmitted to computer by USB cable or Bluetooth adapter for various analysis. * With 10 minutes auto power off and manual power off. 

5.1 Zero Calibration Turn the unit on by pressing the Power Key or the Power/Menu Key. Display should show zero when unit is in measuring position. If the gauge does not display zero, press Send/Minus Key + Adjust Key for zero calibration. 5.2 Setting The Material Diameter Compensation Coefficient To set the Material Diameter Compensation Coefficient according to the material diameter. For detailed procedure please refer to 7 The Material Diameter Compensation Coefficient. 5.3 Setup Arrange the filament according to the indication on the sensor, and hold the sensor in the position of zero calibration. 5.4 Reading After the correct installation of filament, the Current Value, the Max. Value, the Peak Value, the Min. Value of tension will be displayed. 6. ADJUSTING THE DISPLAY UPDATE RATE The LTTS takes 62 tension measurements per second and displays the average of these measurements over a user-selected interval of 0.5, 1.0, 2.0 or 4.0 seconds, the Display Update Rate. This permits the user to determine the extent of averaging (or damping) required to "stabilize" the tension readings, making them much easier to read and eliminating the undesirable ‘bouncing needle’. Press and hold the Power/Menu Key for about 6 seconds, an indicator of ‘ ’(RATE) comes out on the display. Release the key to enter the Display Update Rate Adjusting Mode. To adjust the Display Update Rate, just press the Clear/Plus key or the Send/Minus Key. Then press the Power/Menu Key to exit. The display update rate can be set as one of the following values, 0.5, 1.0, 2.0 4.0. 7. THE MATERIAL DIAMETER COMPENSATION COEFFICIENT When using the "three-roller” principle of tension measurement, an decrease in material diameter will result in an decreased tension reading even when the line tensions are unchanged. So, a Compensation Coefficient is necessary for measurement. For different materials the relationship between the Material Diameter and the Compensation Coefficient are different. See the following relationship between the Material Diameter and the Compensation Coefficient of Fishing Line as an example.