LE-05 and LE-15 Non-Contact Laser Extensometers These extensometers are high precision non-contacting units for strain measurement in materials testing. They use a high speed laser scanner to measure the spacing between reflective tape strips on the sample. The measurement range is from 8 to 127 mm (0.3 to 5 inches) for the LE-05 and 8 to 381 mm (0.3 to 15 inches) for the LE-15. The gauge length is determined by the user. This allows high elongation measure­ ents when m shorter gauge lengths are used. The high resolution also allows accurate measurements of smaller strains. Model LE-05 laser extensometer control panel Model LE-05 and LE-15 extensometers measure strain optically, without contacting the specimen, using laser diode technology. The extensometers are self-contained and portable. They may be interfaced with a variety of testing machines and data acquisition systems using the ±10V analog output or bi-directional RS-232 serial port. Operation may be local or remote. A digital display is included. Model LE-15 laser extensometer The scanning beam is always perpendicular to the specimen, unlike most laser extensometers. This eliminates errors when viewing through windows in chambers. It also minimizes sensitivity to the distance between the extensometer and the sample. Because the unit measures reflected light, no receiver is required behind the sample. Easy to use. Laser extensometer high temperature clip-on reflectors The visible laser light is simply aimed at the specimen, which has small reflective tape strips set at the gauge length desired. The extensometer displays the actual measured gauge length. If desired, the zero button will offset the output to zero. As the specimen is tested, the display will then read the elongation directly. The analog output and RS-232 interface are easily connected to existing controls or data acquisition systems. The reflective tape can be used at temperatures up to 150 °C (300 °F). High temperature clip-on reflectors may be used as an alternate to tape reflectors. These are re-usable and available as an option. They are rated for use to 425 °C (800 °F). Visit our website at www.epsilontech.

Features • Non-contacting optical design requires only reflective tape marks on the specimen, or clip-on reflectors • Ideal for use in chambers-calibration not affected by aiming through viewing windows • High resolution of 1 micron • Full 127 mm (5 inch) or 381 mm (15 inch) measuring range allows high elongation measurements (e.g. 200% on a 1 inch gauge length) Measurement Range: LE-05: 8 to 127 mm (0.3 to 5 inches)) Max. Scan Rate: 100 scans/second Target Distance: Two selectable factory preset values between 254 and 457 mm (10 and 18 inches). Default values are: LE-05: 305 and 381...