CHECK•LINE BY ELECTROMATIC DX2/DXX Operating Instructions CHECK•LINE ® ELECTROMATIC E INSTRUMENTS Q U I P M E N T C O ., I N C. 600 Oakland Ave., Cedarhurst, NY 11516–U.S.A.
7.0 DX2 MODEL DATA & SPECIFICATIONS* Accuracy** CONTENTS ± 1% of full scale or ± 1 graduation mark on scale 1.0 Overview & Operating Principle . . . . . . . . . . . . . . . 2 Diameter of Scale 41 mm 2.0 Operating Elements . . . . . . . . . . . . . . . . . . . . . . . . . 3 Maximum Speed (standard) (optional) (optional) 3.0 Thickness Compensation . . . . . . . . . . . . . . . . . . . . . 4 2000 m/ min 3500 m/ min 5000 m/ min 4.0 Quick Start Instructions . . . . . . . . . . . . . . . . . . . . .
1.0 OVERVIEW & OPERATING PRINCIPLE DX2 and DXX Tension Meters are hand-held, mechanical instruments which accurately measure the running as well as static tensions of a wide variety of process materials including yarns, fibers, wires, optical fibers, tapes, etc. They employ the 3-roller principle for tension measurement where the outer two reference guide rollers remain fixed during measurement to establish a wrap angle over the middle sensing roller.
6.0 OPTIONS 2.0 OPERATING ELEMENTS 6.1 High-Speed Guide Rollers DX2 and DXX guide roller assemblies are rated 2000 meters/min., maximum. The following high-speed roller assemblies are optionally available: “K” Roller Assembly : 3,000 meters/min., maximum “U” or “DHS” Assembly : 5,000 meters/min., maximum All high speed roller assemblies must be initially installed by the factory or an authorized service facility. 6.
3.0 THICKNESS COMPENSATION The 3-roller system for tension measurement relies on the displacement of the middle roller to give an indication of line tension. As the material diameter or thickness changes, there will be a change in tension reading, even though line tension has not changed. To offset this effect, high-range instruments (1000 grams and higher) are usually furnished with a Thickness Compensator, as shown here.
5.2 Special Calibration Special Calibration is optionally available for a specific material type and size so long as the material fits the mechanical limits and range of the instrument. The customer must supply a 10-ft sample (3 meters) of the material. Such calibration can be performed with or without using the Thickness Compensator if one has been provided with the instrument. If not specified, the calibration facility will use its best judgment.
5.0 CALIBRATION NOTES The calibration process involves hanging laboratory weights from a fixed point, engaging the vertical line material which holds the weights with the tension meter 3-roller system, marking a blank dial face where the scale pointer comes to rest for each weight used, dividing the spaces between load “reading” marks and finish marking and numbering to show calibration marks and “readings” on the dial face. The procedure requires specialized skills and the following material: 5.
APPENDIX — DX2 SPECIAL-PURPOSE MODELS Essentially, all DX2 Special Purpose models operate in a manner similar to the standard Type DX2. In addition, however, they offer special rollers and head configurations for specific applications.
