High-precision optical extensometers with industry-leading resolution, accuracy, speed, and ease of use. Measures axial strain and elongation for a wide range of applications. ±10V output is compatible with any testing system.
Gauge Lengths: User selectable, small as 2 mm Measuring Ranges: <1% to >1000%, depending on gauge length and field of view Field of View: 52 - 500 mm Key Features: Non-contacting, high precision, high speed, telecentric optics, Instant Reset, Always On / Always Running, laser alignment, ±10V output
➜ Features and specifications ➜ Applications ➜ Advantages
These extensometers are high precision non-contacting units for strain measurement in materials testing. They use a high speed laser scanner to measure the spacing between reflective tape strips on the sample. The measurement range is 8 to 127 mm (0.3 to 5 inches).
Gauge Lengths: User selectable Measuring Ranges: User selectable Temperature Range: Ambient to 425 °C Key Features: Non-contacting
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.
Gauge Lengths: 20 – 80 mm Measuring Ranges: 5% – 100% Temperature Range: -270 °C to 200 °C with LHT option Key Features: Quick attach, adapter kits to change gauge lengths
Small profile and ultra-light weight, these units are appropriate for testing small and delicate samples yet rugged enough for daily use on standard specimens. Ideal for wire specimens, sheet materials, and standard ASTM or ISO specimen geometries, and excellent for low and high cycle fatigue testing.
Gauge Lengths: 3 – 50 mm Measuring Ranges: 5% – 100% Temperature Range: -270 °C to 200 °C with -LHT option Key Features: Low profile, light weight, adapter kits to change gauge lengths
Long gauge length extensometers with gauge lengths 100 mm (4 inches) or greater for tensile and compression testing. These units are for long gage length applications where low level strain measurements such as offset yield are required.
Gauge Lengths: 100 – 600 mm Measuring Ranges: ±2.5 mm up to +25.0 mm/-6.0 mm Temperature Range: -270 °C to 200 °C with LHT option Key Features: Extra-long gauge length
This model is available in gauge lengths from 50 mm (2 inches) and larger, with measuring ranges up to 100 mm (4 inches). It is a uniquely designed unit that may be left on through specimen failure. These extensometers are widely used where long samples are required. They are ideal for testing steel re-bar, weld joints, and wire materials.
Gauge Lengths: 50 – 600 mm Measuring Ranges: +25 mm, +50 mm, +100 mm Temperature Range: 1 °C to 150 °C with -HT1 option Key Features: Large gauge length, rugged, rebar testing
Measures strain on opposite sides of the specimen and outputs the average. Features self-setting gauge length.
Gauge Lengths: 10 – 50 mm Measuring Ranges: ±0.5 mm, ±1.0 mm, +2.5 mm Temperature Range: -270 °C to 200 °C with -LHT option Key Features: Self-setting gauge length, compact
Designed for plastics, rubber and elastomer testing, these extensometers have very long measuring ranges. Their unique design allows testing to failure and minimizes interaction with the sample.
Gauge Lengths: 20 – 50 mm Measuring Ranges: +250 mm and +500 mm Temperature Range: -40 °C to 100 °C Key Features: High elongation extensometer
Designed for tensile testing with furnaces, these extensometers use Epsilon’s self-supporting design and do not require cooling or mounting brackets.
Gauge Lengths: 10 – 50 mm Measuring Ranges: 5% – 100% Temperature Range: Ambient to 1200 °C Key Features: Self-supporting furnace extensometer
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.
Gauge Lengths: 10 – 50 mm Measuring Ranges: 10% – 100% Temperature Range: Ambient to 1600 °C with -HT option Key Features: Hot-mountable furnace extensometer
High precision extensometer measures axial strains on specimens at temperatures up to 1600 °C (2900 °F). Compatible with materials testing furnaces or induction heating. May be used for strain-controlled, high frequency fatigue tests. Slide mounting system enables mounting to hot specimens in seconds.
Gauge Lengths: 12.5 – 25 mm Measuring Ranges: +2.5 mm / -0.5 mm typical Temperature Range: Ambient to 1600 °C with -HT option Key Features: Hot-mountable, extended performance furnace extensometer
For use in environmental chambers where the entire extensometer must be exposed to elevated temperatures. These capacitive extensometers may be used up to 700 °C (1300 °F) without any cooling.
Gauge Lengths: 10 – 50 mm Measuring Ranges: 2.5 mm to 12.5 mm Temperature Range: Ambient to 700 °C Key Features: Uncooled axial extensometer for environmental chambers
For fracture mechanics studies, these COD gages are in compliance with standardized test methods, such as ASTM E1820 for determination of fracture toughness properties of metallic materials.
Gauge Lengths: 3 – 20 mm Measuring Ranges: 2.5 mm - 12.5 mm Temperature Range: -270 °C to 200 °C with -LHT option Key Features: ASTM E399 and E1820 versions available; some models may be used for da/dN at 50 Hz or more
High temperature COD gages for use in split type materials testing furnaces with a slot for the ceramic rods. Liquid-cooled and bracket mounted, these COD gages are for use to 1200 °C (2200 °F). The high temperature option allows use to 1600 °C (2900 °F). They are specifically designed for fracture mechanics testing.
Gauge Lengths: 5 – 20 mm Measuring Ranges: 2.5 mm – 12.5 mm Temperature Range: Ambient to 1600 °C Key Features: Furnace COD gage
Designed for fracture mechanics testing in environmental chambers where the entire gage must be exposed to elevated temperatures. These capacitive sensors may be used up to 700 °C (1300 °F) without any cooling.
Gauge Lengths: 3 – 12 mm Measuring Ranges: 2.5 mm to 12.5 mm Temperature Range: Ambient to 700 °C Key Features: Uncooled COD gage for environmental chambers
Widely used for measuring deformations in three and four point bend tests, compression tests and a variety of general purpose deformations. These strain gaged devices come with a magnetic base for easy mounting.
Measuring Ranges: 1 – 50 mm Temperature Range: -270 °C to 200 °C with -LHT option Key Features: High sensitivity deflection measurement on any flat surface
