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3542 Axial Extensometers

3542 Axial Extensometers
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3542 Axial Extensometers General purpose extensometers for axial tensile, compression, and cyclic testing. Gauge lengths from 20 to 80 mm (and 0.8 to 2 inches) and full scale measuring ranges from 5% to 100% strain. Model 3542 with round metal specimen Model 3542 Quick Attach feature enables mounting with one hand Model 3542 configured for a very large specimen diameter See the Model 3542 extensometer videos These extensometers are designed for testing a wide range of materials, including metals, plastics, composites and ceramics. All will perform both tension and compression strain measurement. The dual flexure design makes them very rugged and insensitive to vibrations, which permits Model 3542 with 25 mm gauge length and higher frequency operation. ±10% measuring range They come standard with Epsilon’s quick attach kit, making it possible to mount the extensometer on the test specimen quickly and easily with one hand. The quick attach kit can be removed, allowing mounting of the extensometer with springs or rubber bands. Model 3542 extensometers are strain gaged devices, making them compatible with any electronics designed for strain gaged transducers. Most often they are connected to a test machine controller with electronics for a strain channel, and Epsilon will equip the extensometer with a compatible connector wired to plug directly into the controller. For systems lacking the required electronics, Epsilon can provide a variety of solutions for signal conditioning and connection to data acquisition systems or other equipment. For gauge lengths less than 20 mm (0.8 inches), Epsilon recommends the more compact Model 3442. For gauge lengths 100 mm (4 inches) or greater, see Model 3542L. See the electronics section of this catalog for available signal conditioners and strain meters. Extensometers for Composites Compression Testing Models 3542 and 3442 extensometers can be furnished to clip directly onto composites compression fixtures, such as for ASTM D695. These use specially made wire forms for the test fixture. Contact Epsilon for details. Also see the Model 3442 miniature extensometer. Standard quick attach wire forms included for round and flat samples • Model 3542 mounted on a D695 compression fixture for composite materials Rubber band and spring attachment options are included with Models 3542 and 3442 Visit our website at www.epsilontech.c

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Ordering Information May be left on through specimen failure. bridge, 350 ohm strain gaged design for compatibility with nearly any test system. models can measure in both tension and compression and can be used for cyclic testing. Standard quick attach kit allows one hand mounting to specimens. dual flexure design for strength and improved performance. Much stronger than single flexure designs, this also allows cyclic testing at higher frequencies. models have mechanical overtravel stops in both directions. Cable stops are used for overtravel protection where required. Epsilon’s cable...

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