For static and dynamic applications ranging from 40° to 540° C
These elevate temperature MTS 633.11 axial extensometers are specially designed for measuring axial strain in elevated temperature testing environments without external cooling. They provide stable output, with low creep, for both tension and fatigue testing applications at temperatures ranging from 40° to 540° C (100° to 1000°F).
U.S. Customary versions of this extensometer feature a gage length of 1.000 inch and a travel range of –0.080 to +0.160 inch. SI Metric units feature a gage length of 25.00 mm and a travel of –2.00 to +4.00 mm. The strain range for all models is –8.0% to +16%.
Like all MTS extensometers, the 633.11 features a unique cross-flexure design, which assures true center-point bending. The result is low hysteresis and low activation forces for exceptionally accurate strain readings, and extended travel capability for measuring post-yield behavior up to specimen fracture. Mechanical stops that make it possible to leave them attached through specimen failure without incurring damage. Additionally, a zero-set pin enables accurate and consistent determination of initial extensometer gage lengths.
633.11 extensometers come standard with hardened, replaceable knife edges for both flat and round specimens. These knife edges feature a symmetrical design that minimizes their susceptibility to chipping and wear. Optional knife edge sets are available for use with a variety of specimen geometries and materials. These units also come standard with Quick-Attach springs (U.S. Patent 4,507,871), which make mounting to flat or round specimens fast and easy.
The standard 633.11 kit also features a compact Converter Module that contains the necessary electronics for high level output to the test system controller. This module affixes easily to a test frame load column via straps. The Converter Module comes with its own power supply, which provides the required input power of +/–15 Vdc at 200 mA. 633.11 cabling is strain-relieved and potted directly to the sensing unit to minimize solder connections and assure maximum signal integrity. Each 633.11 extensometer is packed in a rugged storage case that contains the instrument, converter module, spare parts, springs, attachment devices and tools.
