7651
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Catalog excerpts

7651 High Temperature XY Biaxial Extensometer (1200°C or 1600°C) NEW PRODUCT Simultaneously measures in-plane bi-axial strains at high temperatures on specimens tested in X-Y bi-axial machines. For use with materials testing furnaces or induction heating up to 1600 °C (2900 °F). May be used for bi-axial strain controlled fatigue. Slide mounting system enables mounting to hot specimens in seconds. Model 7651 extensometer with 12.5 mm X and Y gauge lengths Model 7651 extensometer with two-channel Model DT6229 signal conditioner Model 7651 extensometers measure combined in-plane strains in flat cruciform specimens tested in machines capable of simultaneous X and Y (perpendicular) axial loading and on standard flat Model 7651 planar biaxial extensometer samples tested in pure tension. All models are with tension-tension specimen capable of bi-directional displacement in both axes and may be used for strain-controlled fatigue testing under fully reversed load and strain conditions at frequencies up to 10 Hz. All 7651 models mount rigidly on the load frame and incorporate slide mounting to bring the extensometer into contact with the specimen. The gauge length is set automatically before mounting on the test specimen, which allows for hot mounting after thermal equilibrium has been reached. These units are specifically designed to eliminate crosstalk between axes and to provide high accuracy, high resolution measurements. They incorporate capacitive sensors for low operating force and include electronics with programmable filtering and multi-point linearization for improved performance and accuracy. The overall design minimizes, and in many cases virtually eliminates, any influence from common lab environment vibrations. These water-cooled extensometers are equipped with high purity alumina rods with conical rod tips for specimen contact when testing to 1200 °C (2200 °F). Silicon carbide rods are used for the 1600 °C (2900 °F) high temperature option. The Model 7651 is often customized for specific test needs. Contact Epsilon for a configuration that matches your requirement. Model 7651 extensometer ceramic arms with conical tips Visit our website at www.epsilontec

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Ordering Information S elf-setting gauge length with fine adjustment feature. models can measure in both tension and compression and may be used for cyclic testing at test frequencies up to 10 Hz. S tandard units meet ASTM class B-1 requirements for accuracy. A test certificate is included. ISO 9513 class 0,5 test certificates are available upon request. S hips fully calibrated with calibration that is traceable to NPL; voltage output may be user-specified (typically 0-10V). E xcellent ambient vibration rejection; primary vibration mode >100 Hz typical D igital controller and power supply...

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