En cliquant sur OK ou en poursuivant votre navigation sur ce site, vous acceptez les CGU / politique de confidentialité de la société DOERLER Mesures et les cookies nécessaires au bon fonctionnement de celui-ci. Le but étant de réaliser des statistiques de visites.

 

Extensometer EPSILON Technology :

 

What's an extensometer ?

This is a sensor for measuring an stress-strain ( or displacement ) in a low measurement range during mechanical testing . It can be used on specimen under tension , compression or torsion.

 

What can be measured with an extensometer ?

We can measure a axial stress-strain, transverse or biaxial . We also have in our range of sensors for measuring the tenacity (breaking) , bending, torsion. The range of measurement is announced in " % strain ", that is to say, a measuring range of + 20% (tensile) represents a strain of 200 000 µm/m. If the sensor has a base of 25 mm you will have a measuring range of 5 mm.
Important : the measuring range is not necessarily symmetric if you work in tension and compression ( eg measuring range : 20% -10% in tension and compression ).

 

What is Extensometer designed for ?

There are many trials involving the use of a extensometer . In most cases , these mechanical testing to characterize the materials. This is an important element stress analysis to determine or calculate: elastic modulus, elongation at break , ...

 

Extensometers EPSILON technology

Epsilon uses two technologies into this Extensometers. In most sensors the strain gauge is used, otherwise the capacitive technology offers interesting caracteristics for high temperature tests ( up to 1600 ° C).

 

icontelechargement  Download Catalog

 

Axial Extensometers


Picture of 3542 Extensometer

3542

General purpose Extensometers for axial tensile

  • Gauge length from 10 to 80 mm
  • Measuring range : +/-5 to +100%
  • Strain gages technology
Picture of 3442 Extensometer

3442

Used for testing small and delicate samples.
Very small and rugged, yet ultra-light weight

  • Gauge length from 3 to 12 mm
  • Measuring range : +/-5 to +100%
  • Strain gages technology
Picture of 3542L Extensometer

3542L

Long gauge length extensometers with gauge lengths greater than 100 mm

  • Gauge length from 100 to 500 mm
  • Measuring range : +/-2,5 to +/-12,5 mm
  • Strain gages technology
Picture of 3543 Extensometer

3543

These extensometers are widely used where long samples and large measuring ranges are required

  • Gauge length from 50 to 250 mm
  • Measuring range : 25 to 100 mm
  • Strain gages technology
Picture of 3800 Extensometer

3800

Designed for plastic, rubber and elastomer testing

  • Gauge length from 20 to 50 mm
  • Measuring range : 125 to 500 mm
  • Strain gages technology
Photo de l'extensomètre 4030

4030

Submersible extensometer designed for performing tests in water, saline solutions, and other liquids compatible with the materials of construction.

  • These are made entirely of stainless steel with Teflon cables
  • Measuring range : 5 mm
  • LVDT Technology

High temperature axial extensometers (above 200°C)


Picture of 3448 Extensometer

3448

Designed for use with furnaces and induction heating systems

  • Gauge length from 10 to 50 mm
  • Measuring range : +/-5 to +5%
  • Strain gages technology
Picture of 3549 Extensometer

3549

With very low sensitivity to vibrations, this hot mountable unit is ideal for the demanding requirements of strain controlled.

  • Gauge length from 10 to 50 mm
  • Measuring range : +/-10 to +100%
  • Strain gages technology
Picture of 3648 Extensometer

3648

This model was designed for low strain applications for ued with split type materials testing furnaces or induction heaters.

  • Gauge length from 10 to 50 mm
  • Measuring range : +/-2,5 to +/-12,5 mm
  • Capacitive technology
Picture of 7650A Extensometer

7650A

 

  • Gauge length from 10 to 50 mm
  • Measuring range : +/-10 to 100 %
  • Strain gages technology
Picture of 7642 Extensometer

7642

For use in environmental chambers where the entire extensometer must be exposed to elevated temperatures. These capacitive extensometers may be used up to 600 °C (1100 °F) without any cooling.

  • Gauge length from 10 to 50 mm
  • Measuring range : +/-5 to 50 %
  • Capacitive technology
 

 

Transverse and diametral extensometers


Picture of 3475 Extensometer

3475

A miniature extensometer designed for general purpose transverse or diametral strain measurements on small or thin specimens.

  • Measuring range : +/-0,25 to +/-1,25 mm
  • Strain gages technology
Picture of 3575 Extensometer

3575

Designed for general purpose transverse or diametral strain measurement on axially loaded specimens

  • Measuring range : +/-0,25 to +/-1,25 mm
  • Strain gages technology
Picture of 3575AVG Extensometer

3575 AVG

Designed for measuring r-values in sheet metal testing, this extensometers averages the lateral strain at two locations.

  • Measuring range : 2 mm
  • Strain gages technology
Picture of 3560 Extensometer

3560

This extensometer is ideally suited for testing anisotropic materials such as advanced composites as well as for general purpose tests like determining Poisson's ratio.

  • Strain gages technology
 
 

High temperature transverse and diametral extensometers


Picture of 3580 Extensometer

3580

For transverse or diametral strain measurement at temperatures to 1000 °C.

  • Measuring range : +/-0,5 to +/-5 mm
  • Strain gages technology
Picture of 7675 Extensometer

7675

For tests in environmental chambers where the entire extensometers must be exposed to the head. Designed for transverse or diametral strain measurement at temperature up to 540°C without any cooling.

  • Measuring range : +/-1,2 and +/-2,5 mm
  • Capacitive technology
 

Fracture mechanics clip-on gages


Picture of 3541 Extensometer

3541

For fracture mechanics studies, these clip-on gages are in compliance with standardized test methods such as ASTM E1820 for determination of fracture toughness properties of materials.

  • Gauge length from 3 to 20 mm
  • Measuring range : +/-0,25 to +/-1,25 mm
  • Strain gages technology
Picture of 3548COD Extensometer

3548 COD

High temperature fracture toughness clip-on gages for use in side cut-out, split type materials testing furnaces. Water cooled and furnace bracket mounted, there are options for use to 1200°C or 1600°C.

  • Gauge length from 5 to 20 mm
  • Measuring range : 2,5 to 12,0 mm
  • Strain gages technology
Picture of 7641 Extensometer

7641

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 600 °C without any cooling

  • Gauge length from 3 to 12 mm
  • Measuring range : 2,5 to 12,5 mm
  • Capacitive technology

Rock, concrete and asphalt extensometers


Picture of 3442RA1 Extensometer

3442 RA1

Designed for tensile or compressive strength tests on rock, concrete, and other small diameter compression samples. Axial strain is measured on opposite sides of the test specimen and the output is the average of these two readings.

  • Gauge length from 25 to 50 mm
  • Measuring range : +/-1,25 to +/-2,5 mm
  • Strain gages technology
Picture of 3542RA Extensometer

3542 RA

Designed for tensile or compressive strength tests on rock, concrete, and other large compression samples. Axial strain is measured on opposite sides of the test specimen and the output is the average of these two readings.

  • Gauge length from 25 to 200 mm
  • Measuring range : +/- 1,2 to 6 mm
  • Strain gages technology
Picture of 3544 Extensometer

3544

Designed for concrete or rock compression testing or for compression tests on other large samples.

  • Gauge length from 50 to 200 mm
  • Measuring range : 2 à 12 mm
  • Strain gages technology
Picture of 3909 Extensometer

3909

Designed for measuring axial displacements in the simple performance tests prescribed by NCHRP Report 465, and determining dynamic modulus of hot mix asphalt per AASHTO TP062.

  • Gauge length from 70 to 100 mm
  • Strain gages technology
Picture of 3910 Extensometer

3910

Designed for creep compliance and tensile strength testing per AASHTO T322. This model meets many of the needs for testing asphalt core samples in 4 and 6 inch diameters.

  • Gauge length from 25 to 100 mm
  • Strain gages technology
Picture of 3911 Extensometer

3911

Designed in accordance to AASHTO TP31 and ASTM D4123. This model meets many of the needs for testing asphalt core samples in 4 and 6 inch diameters.

  • Measuring range : 0,76 to 2 mm
  • Strain gages technology
Picture of 3975 Extensometer

3975

Designed for accurate measurement of the small diametral strains such as those required to determine the Poisson's ratio of rock, concrete, and asphalt samples.

  • Measuring range : 0,76 to 2 mm
  • Strain gages technology
 
 

Deflexion gages


Picture of 3540 Extensometer

3540

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 range : 1 to 50 mm
  • Strain gages technology
 
 

Bolt Proof, Lap Shear and Specialty Extensometers


Photo d'un extensomètre 3565

3565

Designed for measuring small measuring strain ranges as required for proof load testing of bolts and similar applications such as yield measurement.

  • Measuring range : 1,25 mm
  • For length Bolts from 25 to 150 mm
  • The conical point contacts are made from tungsten carbide
Photo de l'extensomètre 3567

3567

Extensometers for measuring elongation of rebar coupler, splice, and sleeve assemblies.

  • Gauge length from 95 to 675 and from 95 to 975 mm
  • Measuring range : 12,5 mm
  • Strain gages technology
Photo de l'extensomètre 4013

4013

SDesigned specifically for performing tests in accordance with ASTM D5656

  • Measuring range : to 0,5 to 3 mm
  • Strain gages technology
  • The conical point contacts are made from tungsten carbide
Photo de l'extensomètre 3421

3421

For measuring shear properties of sandwich cores to ASTM C273. Simple clip-on design attaches in seconds and provides repeatable test results.

  • Measuring range : from +/- 2,5 to +/- 5 mm
  • Easy mounting, attaches with an integral spring
  • Strain gages technology
Photo de l'extensomètre 4030

4030

Submersible extensometer designed for performing tests in water, saline solutions, and other liquids compatible with the materials of construction.

  • These are made entirely of stainless steel with Teflon cables
  • Measuring range : 5 mm
  • LVDT Technology
 

Custom extensometers


Picture of Custom Extensometer

Custom Extensometers

Shown here is a small sampling of the custom and modified extensometers Epsilon has made. Sometimes the test requires a completely custom design. Often, though, special test needs can be accommodated by modifications to existing standard models. If you have special requirements and do not see it in our catalog, please contact us to discuss your application.

 
 

Electronics for extensometers


Picture of SGA conditioner

SGA

These signal conditioners are ideal for cyclic and high speed testing where no display is needed. Available in single and dual channel versions, they provide the signal conditioning electronics needed for a strain gage based extensometer.

  • Display : NO
Picture of DSC conditioner

DSC

These digital signal conditioners are ideal for tensile and compression testing where no display is needed. They provide all the signal conditioning electronics needed for a strain gage based extensometer.

  • Display : NO
Picture of DSC-DD conditioner

DSC-DD

These digital signal conditioners are ideal for tensile and compression testing where a display is needed. They provide all the signal conditioning electronics needed for a strain gage based extensometer.

  • Display : YES
Picture of DSM PLUS conditioner

DSM-PLUS

A high accuracy, high speed meter. Allows multiple calibrated ranges. Optionally, the DSM-Plus can have two channels to read force and strain. This is a simple, low cost way to obtain the data for stress-strain plots.

  • Display : YES
Picture of DSC-USB conditioner

DSC-USB

These digital extensometer interfaces provide USB plug-and-play capability to any strain gauged extensometer. They are useful when you wish to acquire data directly to your computer without the need for a controller.

  • Display : NO
 

Calibrators for extensometers


Picture of 3590 Calibrator

3590

Epsilon’s standard calibrator features 50 microinches (0.001 mm) resolution and has 2 inches (50 mm) of measuring range. The autozero button and digital display greatly simplify calibration of extensometers. The 3590 calibrator is useful for extensometer calibration and verification with test systems.

  • Measuring range : 50 mm
Picture of 3590AT Calibrator

3590 AT

Epsilon’s axial torsional calibrator features 50 microinches (0.001 mm) resolution and has 2 inches (50 mm) of measuring range axial and torsional rotation where 0.050 inch [ 1.27 mm ] of linear motion equates to 1° angle of twist. The autozero button and digital display greatly simplify calibration of extensometers.

  • Measuring range : 50 mm
Picture of 3590VHR Calibrator

3590 VHR

Epsilon’s very high resolution calibrator features 0.8 microinches (20 nanometers) resolution and has 2 inches (50 mm) of measuring range. The 3590VHR calibrator meets the accuracy and resolution requirements for ASTM E83 Class B-1 for a 6 mm gauge length and greater extensometers and ISO 9513 Class 0,5 over the full measuring range of the calibrator.

  • Measuring range : 50 mm
Picture of SHUNT Calibrator

SHUNT CALIBRATION

Designed for general purpose testing, these conditioners are available with one or two channels, and can be used a full system replacements for older test systems. This provides a low cost way to obtain the data for stress-strain plots. The automatic recognition feature allows multiple extensometers to be calibrated individually on one meter.

  • Measuring range :
Picture of VREF Calibrator

VREF

10V calibration reference for high level devices

  • Measuring range : 10 Vcc
 

Accessories for extensometers


Picture of Accessories

Knife, connecto,...

A variety of knife edge styles for special test needs, to fit most Epsilon extensometers

  • Sur demande
 
 

DOERLER Mesures | Copyright © 2012. All Rights Reserved.| Site Info & Legal | Site Map | Contact Us

 

logo de l'appartenance au réseau mesure        logo de certification d'enregistrement dans la base datadock