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Extensometers for materials testing

Long Gauge Length Axial Extensometers – Model 3542L

Long gauge length extensometers with gauge lengths 100 mm (4 inches) or greater for tensile and compression testing. These units have been specially designed for long gauge length applications where low level strain measurements are required.

Epsilon extensometers are COMPATIBLE WITH VIRTUALLY EVERY BRAND OF TEST EQUIPMENT and can be supplied with the correct connector to plug in directly, or supplied with a separate conditioner and amplifier.

Operation of these, and all of Epsilon’s extensometers, are

VERIFIED TO APPLICABLE STANDARDS SUCH AS ASTM E83 OR ISO 9513

using in-house calibration systems that are calibrated with Epsilon’s laser interferometer system.

WITH EPSILON’S 20+ YEAR HISTORY OF SERVICE

to the materials testing community, you know we will be there to stand behind our products when your critical application requires it.

The dual flexure design makes the 3542L very rugged and insensitive to vibrations. These extensometers are designed for testing a wide range of materials including metals, plastics, composites and ceramics. Epsilon’s Model 3543 is recommended for applications requiring long gauge lengths and larger measuring ranges.

The Model 3542L comes standard with Epsilon’s quick attach kit, making it easy to mount the extensometer on the test specimen. The quick attach kit can be removed, allowing mounting of the extensometer with springs or rubber bands.

The 3542L 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.

For gauge lengths less than 100 mm (4 inches), see Model 3542.

Download Data Sheet

  • May be left on through specimen failure.
  • Full bridge, 350 ohm strain gaged design for compatibility with nearly any test system.
  • All models can measure in both tension and compression and can be used for cyclic testing.
  • Mechanical overtravel stops in both directions.
  • Standard units meet ASTM class B-1 requirements for accuracy. A test certificate is included. ISO 9513 class 0,5 test certificates are available upon request.
  • Hardened tool steel knife edges are easily replaced. A spare set comes with every extensometer.
  • High and low temperature options extend operation from as low as -265 °C (-450 F) to +200 °C (400 °F).
  • Includes high quality foam lined case.
  • Replaceable arms and spacers for ease of repair. This also allows changing the gauge length for different test requirements.
  • Rugged, dual flexure design for strength and improved performance. Much stronger than single flexure designs, this also allows cyclic testing at higher frequencies.
  • Standard quick attach kit allows quick mounting to specimens.

Download Data Sheet

Excitation: 5 to 10 VDC recommended, 12 VDC or VAC max.

Output: 2 to 4 mV/V, nominal, depending on model

Linearity: ≤0.15% of full scale measuring range

Temperature Range: Standard (-ST) is -40 °C to +100 °C (-40 °F to 210 °F)

Cable: Integral, ultra-flexible cable, 2.5 m (8 ft) standard

Standard Quick Attach Kit: Fits round samples up to 25 mm (1.0 inch) diameter and flats to 12 mm thick by 31 mm wide (0.5 inch by 1.25 inch)

Operating Force: Depends on model configuration, less than 30 g typically

ce-certified

 

Download Data Sheet

  • Quick attach kit wireforms for large specimens
  • Adapter kits to change gauge lengths
  • Connectors to interface to nearly any brand test equipment
  • Special coatings and stainless steel knife edges available for biomedical tests.
  • Shunt Calibration
  • Specialty Knife Edges

Download Data Sheet

Ordering Information

Click table options to configure

Gauge Length i

mm or inches #
100 mm -100M 100M
150 mm -150M 150M
200 mm -200M 200M
250 mm -250M 250M
500 mm -500M 500M
600 mm -600M 600M
4.000 in -0400 0400
6.000 in -0600 0600
8.000 in -0800 0800
10.000 in -1000 1000
20.000 in -2000 2000
24.000 in -2400 2400

Measuring Range i

extension #
±2.5 mm -002M 002M
±6.0 mm -006M 006M
+12.5 mm/-6.0 mm -012M 012M
±0.10 in -010T 010T
±0.25 in -025T 025T
+0.50 in/-0.25 in -050T 050T

Temperature Range

degrees #
-265 °C to 100 °C (-450 °F to 210 °F) -LT LT
-40 °C to 100 °C (-40 °F to 210 °F) -ST ST
-40 °C to 150 °C (-40 °F to 300 °F) -HT1 HT1
-40 °C to 200 °C (-40 °F to 400 °F) -HT2 HT2
-265 °C to 200 °C (-450 °F to 400 °F) -LHT LHT

Model Number:  3542L_ _ _ __ _ __ _

Model Number:

3542L_ _ _ __ _ __ _

Model 3542L Available Versions: ANY combination of gauge length, measuring range and temperature range listed above is available, except as noted. Other configurations may be available with special order; please contact Epsilon to discuss your requirements.

Example: 3542L-200M-006M-ST: 200 mm gauge length, ±6.0 mm measuring range, standard temperature option (-40 °C to 100 °C)

Download Product Guide

Axial and High Temperature

Shunt Calibration

SCM Shunt Calibration Modules

Knife Edge Options

Available for Epsilon Extensometers

Repairs/Service

If your unit is in need of service, calibration or repair, initiate the RMA process with us and we will be happy to assist.

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2017 Extensometer Catalog, Version 109 is now available! Not finding something you’re looking for? Ask us about a custom quote.