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  3. Model 3542RA Averaging Axial Extensometers

Model 3542RA Averaging Axial Extensometers

Model 3542RA Averaging Axial Extensometers
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Model 3542RA Averaging Axial Extensometers

Product catalog summary
Features:
  • Full bridge, 350 ohm strain gaged design compatible with most test systems.
  • High accuracy with averaging output or optional dual independent outputs.
  • Meets ASTM class B-1 and ISO 9513, class 0.5 accuracy requirements.
  • Rugged dual flexure design for enhanced strength and performance.
  • Includes a high-quality foam-lined case for protection.
  • Easy mounting with integral springs, self-supporting on specimens.
  • Compatible with Model 3544 circumferential and Model 3975 diametral extensometers.
Specifications:
  • Excitation: 5 to 10 VDC recommended, 12 VDC or VAC max.
  • Output: 2 to 4 mV/V nominal, model-dependent.
  • Linearity: ≤0.20% of full scale measuring range, model-dependent.
  • Temperature Range: Standard (-ST) is -40 °C to +100 °C (-40 °F to 210 °F).
  • Cable: Integral, ultra-flexible, 8 ft (2.5 m) standard.
  • Specimen Size: Available for a wide range of sizes, up to 8 inches (200 mm) diameters.
  • Operating Force: <30 g typical per side.
Options:
  • Connectors for various test equipment brands.
  • Shunt calibration module.
  • Dual independent outputs.
  • Fixed or variable diameter configurations.
Model Variants:
  • 3542RA1: Fixed size, suitable for single diameter specimens.
  • 3542RA2: Adjustable diameter, suitable for varying specimen sizes.
Ordering Information:
  • Specify gage length, measuring range, and temperature range.
  • Test specimen diameter(s) must be specified at order time.
  • Additional diameter configurations available on special order.
Applications:
  • Designed for compressive strength tests on rock, concrete, and large compression samples.
  • Measures axial strain on opposite sides of the specimen, averaging the readings.
  • Suitable for use in tri-axial pressure vessels, with versions for oil use up to 1360 bar at 200 °C.
  • Compatible with Model 3544 circumferential and 3975 diametral extensometers.
Durability:
  • Designed to withstand high volume testing, with some units enduring thousands of tests without damage.
  • Conical point contacts made from tungsten carbide for durability.
See more

All Epsilon Technology catalogs and technical brochures

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Archived catalogs

  1. Epsilon Technology extensometer catalog - ver. 109
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  2. Model 3590 Digital Electronic Calibrator
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  4. Model 3565 Bolt Extensometer for Proof Load Testing and Model 4013 Averaging Extensometer for ASTM D5656 Shear Tests
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  5. Model 3550 Axial/Torsional Extensometer
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  6. Model 3975 Extensometer for Diametral Rock and Concrete Testing
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  7. Models 3911 Extensometer for Indirect Tensile Testing of Asphalt
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  8. Models 3910 Extensometer for Creep Compliance and Tensile Strength Testing of Asphalt
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  9. Models 3909 Extensometer for Simple Performance Testing of Asphalt
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  10. Model 3544 Circumferential Extensometers
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    1  Page

  11. Model 3442RA1 Miniature Averaging Axial Extensometers
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  12. Model 3475 Miniature Transverse Extensometer
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  13. Model 3575 Transverse (Diametral) Extensometer
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  14. Model 3548COD High Temperature Furnace COD Gages, to 1200°C or 1600°C
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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.