About Epsilon

Strain measurement for materials testing is Epsilon’s sole business.

Over forty years of experience has gone into the development of Epsilon’s products. At their facility in Jackson, Wyoming, USA, Epsilon design and build extensometers for testing around the world. Extensometers are available for testing almost all engineering materials, including metals, composites, plastics, ceramics, elastomers, geomaterials (e.g. rock, concrete, and asphalt), and biomaterials including bone. There are models for tiny and delicate samples, including relatively fine wire, up to massive metal samples and large rock cores. The huge variety of models covers nearly every type of test as well, including: tensile, compression, bend, fracture mechanics, and cyclic strain controlled tests like low cycle fatigue. Many of Epsilon’s extensometers are capable of relatively high frequency operation as well.

Axial Extensometers

  • 7 models in this group cover tension, compression and cyclic testing
  • Huge variety of gauge lengths and measuring ranges
  • Temperatures from -270 to +200 °C (-454 to +400 °F)
 High Temperature Axial Extensometers

  • 5 models cover a variety of applications for high temperature testing
  • 1 un-cooled model for use inside chambers up to 700 °C (1300 °F)
  • 4 models for use with split furnaces and induction heating up to 1600 °C (2900 °F)
Fracture Mechanics Clip-On Gauges

  • 3 models cover a broad range of gauge lengths, measuring ranges and temperatures
  • For fracture mechanics and fatigue crack growth tests in compliance with various standards
  • Temperatures from -270 to +1600 °C (-454 to +2900 °F)
 Deflectometers (Deflection Gauges)

  • Widely used for 3 and 4 point bending tests, compression tests and general deflection measurement
Transverse and Diametral Extensometers

  • 4 models cover most any test requirement and can be used with axial extensometers at the same time
  • Miniature and standard units
  • Extensometers for r-value of sheet metal
  • Available options cover temperatures from -270 to +200 °C (-454 to +400 °F)
 High Temp. Transverse & Diametral Extensometers

  • 1 un-cooled unit for use inside chambers to 700 °C (1300 °F)
  • 1 model for use with split furnaces and induction heating, to 1000 °C (1830 °F)
Rock, Concrete and Asphalt Extensometers

  • 7 models cover axial, circumferential and diametral testing on aggregate material
 Averaging, Bi-Axial and Axial/Torsional Extensometers

  • 4 models for axial averaging, axial/transverse, axial/torsional, and in-plane biaxial over a wide range of temperatures
  • Temperatures from -270 to +1600 °C (-454 to +2900 °F)
Bolt Proof, Lap Shear and Specialty Extensometers

  • Specialized extensometers for
    • Bolt proof testing and elongation measurement
    • Elongation of rebar splice assemblies
    • Lap shear, sandwich core shear, and rigid cellular plastic shear
    • Testing while submerged in liquids
 Custom Extensometers

  • Examples of modified standard extensometers and application-specific extensometers
Knife Edges for Extensometers

  • A complete selection of knife edge styles to match many different specimen types and applications
 Interface Electronics & Signal Conditioners Electronics

  • For customers who do not have signal conditioning as part of their test controls
  • 1 analog and 4 digital versions for strain gaged sensors
Calibrators for Extensometers

  • 2 digital models. Choice of 1 micron or 20 nanometer resolution (50 microinch or 0.8 microinch), both with 50 mm (2 inch) travel
  • 1 model for axial/torsional calibrations
  • Provided with calibration traceable to NPL
 Calibration References for Extensometers

  • A simple and inexpensive way to transfer Epsilon’s calibration of an extensometer to the signal conditioner in your test system controls

Epsilon’s Tech Notes provide detailed technical information about extensometer applications and best practices for strain measurement. The Tech Notes complement the General Information manual and model-specific manuals supplied with every extensometer. Tech Notes for specialized extensometers are also available.

Some Tech Notes are not downloadable but are available to verified customers on request.

Click here to go to Epsilon’s Tech Notes.

For further information, pricing and delivery on this range, contact ACS via below form

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