Model 3549 - 2 Pages

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Model 3549

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3549 High Temperature Hot Mountable Furnace Extensometers (1200 °C or 1600 °C) This model can be connected to the test sample in a few seconds. With very low sensitivity to vibrations, this hot mountable unit is ideal for the demanding requirements of strain controlled, elevated temperature axial testing and other common test methods. Model 3549 with 25 mm gauge length Model 3549 contact force scale for repeatable placement against test specimens See the Model 3549 extensometer videos The Model 3549 is a major advancement in the design of externally mounted, furnace extensometers. This new extensometer is designed to meet the stringent requirements of strain controlled testing as prescribed in ISO 6892, while introducing many new innovative features that help improve productivity with static testing applications (tension and compression testing) and long Model 3549 with a 25 mm gauge length shown with a split furnace term testing such as low cycle fatigue and creep. The overall design reduces any influence from common lab environment vibrations. This unit also incorporates a new feature that allows the user to precisely set the contact force against the test specimen. This allows for even and repeatable contact force, limiting contact force induced errors. This extensometer mounts on a slide bracket (included) that can attach to the load frame of your test system; optional load frame mounting brackets are available. The gauge length for the 3549 is automatically set prior to mounting on the test specimen, which allows for hot mounting after thermal equilibrium has been reached. The Model 3549 standard temperature version is made for use in split type materials testing furnaces to 1200 °C (2200 °F) and includes water-cooled bracketry. The high temperature option allows use to 1600 °C (2900 °F). These extensometers can be used in carousel systems for rapid high temperature testing. The standard temperature version (to 1200 °C) is supplied with high purity alumina rods. The high temperature option is furnished with alpha grade silicon carbide rods. Rods are made to order to the length required for your furnace. Mounting brackets may be integrated with the furnace cut-out. Epsilon can also provide load frame mounting brackets to fit your test frame. The Model 3549 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. The signal conditioning electronics for the extensometer is typically included with the test machine controller or may often be added. In this case the extensometer is shipped with the proper connector and wiring to plug directly into the electronics. For systems lacking the required electronics, Epsilon can provide a variety of solutions, allowing the extensometer output to be connected to data acquisition boards, chart recorders or other equipment. Visit our website at www.epsilontech

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Ordering Information May be left on through specimen failure. Model 3549 Available Versions: ANY combination of gauge length, measuring range and temperature range listed below is available, except as noted. Other configurations may be available with special order; please contact Epsilon to discuss your requirements. for those applications requiring greater than ±2.5 mm (±0.10 inches) full scale measuring range. For applications requiring smaller full scale ranges, see Model 7650A (page 30) or Model 3648 (page 28). to meet the demanding requirements of strain controlled testing, such as...

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