High Temperature Extensometer 3448
Designed for use with furnaces and induction heating systems, these extensometers use Epsilon’s exclusive, self-supporting design. A wide range of options cover most testing applications.
Epsilon developed this unique high temperature extensometer for testing metals, ceramics, and composites at the high temperatures produced by furnaces and induction heating systems. A combination of features make these extensometers easier to use and better in performance than other similar high temperature extensometers.
The units are held on the specimen by light, flexible ceramic fiber cords. These make the extensometer self-supporting on the specimen. No furnace mounting brackets are required. The side load on the test sample is greatly reduced because of the self-supporting design and light weight of the sensor. The combination of radiant heat shields and convection cooling fins allow this model to be used at specimen temperatures up to 1200 °C (2200 °F) without any cooling.
Most units operate equally well in tension and compression. Tensile, compression and cyclic fatigue tests can all be performed with a single unit. For testing in strain control or to get the highest performance during cyclic fatigue tests, models 3549 or 7650A are recommended.
features
- • May be left on through specimen failure.
- • Full bridge, 350 ohm strain gaged design for compatibility with nearly any test system.
- • Mechanical overtravel stops in both directions.
- • All units come with high purity alumina ceramic rods.
- • Mounts with flexible ceramic fiber cords.
- • Use without cooling to 1200 °C (2200 °F).
- • Versions available for use in vacuum and controlled atmospheres.
- • May be used on nearly any furnace with side entry cut-out for extensometers.
- • Includes the Epsilon Shunt Calibration System for on-site electrical calibration.
- • Rugged, dual flexure design for strength and improved performance.
- • Includes high quality foam lined case, a spare set of ceramic rods, and eight ceramic fiber cords.