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Extensometers for materials testing

Very High Resolution Digital Electronic Calibrators – Model 3590VHR

Epsilon’s very high resolution calibrator features 20 nanometers (0.8 microinches) resolution and has 50 mm (2 inches) of measuring range. The 3590VHR calibrator meets the accuracy and resolution requirements for ASTM E83 Class B-1 for extensometers with gauge lengths ≥6 mm, and meets ISO 9513 Class 0,5, both over the full measuring range of the calibrator. The 3590VHR includes a Touch Display digital readout and PC software.

36 EXTENSOMETER MODELS are available in many thousands of variations. Our focus on helping customers has led to the development of models to cover nearly any test method.

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 3590VHR calibrator has the high resolution and accuracy required to calibrate and verify extensometers to ASTM E83 Class B-1 and to ISO 9513 Class 0,5. The 3590VHR’s resolution is 20 nanometers.

Like all of Epsilon’s extensometer calibrators, the 3590VHR is itself calibrated using a laser interferometer at our ISO 17025 accredited facility. The 3590VHR is provided with a calibration that is traceable to NPL in the UK, which has equivalency to NIST and many other national standards organizations. A calibration certificate is included.

These calibrators are fast and easy to use due to the simple controls and large digital readouts. The 3590VHR has coarse positioning adjustment for large displacements and fine adjustment that allows positioning to approximately 0.02 μm (0.8 μin). They have enough measuring range to calibrate nearly all extensometers and the resolution necessary to calibrate extensometers with low measuring ranges.

A Touch Display digital readout and software for a PC are included. The calibrator can be used with either or both. The Touch Display and software both provide readouts in millimeters, inches or % strain and have tap-to-zero or click-to-zero functions. The digital displays can reduce operator errors compared to calibrators with mechanical vernier scales.

A wide range of adapters are available to allow use with axial, transverse, shear, and many other specialized extensometers. The calibrator comes with smooth, round adapters that are 9.52 mm (0.375 inches) in diameter and that work with many typical axial extensometers. For very long gauge length extensometers, optional extension columns are available. Contact Epsilon for a configuration that is an exact match for your extensometer.

Download Data Sheet

  • Scale calibration traceable to NIST.
  • System fully calibrated traceable to NPL (UK standards organization).
  • Touch Display with digital readout is included:
    • Digital readout in units of mm, µm, inches, µin or % strain
    • Remaining travel indicator assists with extensometer setup
    • Includes USB interface for PC software
    • Includes tabletop stand
    • Optional temperature and humidity sensor
    • Requires a USB power source
  • Software for Windows-based PC is included:
    • Digital readout in units of mm, inches or % strain
    • Readings taken with the software may be saved to a data file
    • Requires PC with Windows 7/10 and a USB port
    • Optional Netbook PC is available
  • Wide range of extensometer adapters available.
  • Provided with a foam-lined storage case.

Download Data Sheet

Measuring Range: 50 mm (2 inch) maximum displacement

Maximum Clearance: suitable for calibrating extensometers with GL+MR <125 mm*; example: 3542-050M-100, 50 mm GL + 50 mm MR = 100 mm clearance required

Accuracy: ±0.19 µm (±7.5 µin) over any 0.12 mm (0.00475 inch) range

Meets ASTM E83 Class B-1 for extensometers with gauge lengths ≥6 mm and meets ISO 9513 Class 0,5 for all extensometer gauge lengths; both classes apply over the full measuring range of the calibrator

Resolution: 20 nm (0.8 µin)

Temperature Range: 18 °C to 28 °C (64 °F to 82 °F) operation**, -10 °C to 60 °C (14 °F to 140 °F) storage

Relative Humidity: <90% (Non-condensing)

Connectivity: USB 2.0+ interface; requires USB power from a computer or power adapter (not included)

Weight: 3.6 kg (8 lbs) (standard configuration)

Adapters: includes Ø9.52 mm (0.375 inch) adapters for extensometer attachment*

EMC Compliance: BS EN 61326-1: 2006

Environmental: EU Directive 2011/65/EU (RoHS)

* A range of extension columns and extensometer adapters are available – contact Epsilon
** Recommended range

ce-certified

 

Download Data Sheet

Optional extensometer adapter sets, extension columns, and horizontal configuration kit:
3590-01
Smooth, round 6.35 mm (0.25 inch) diameter adapters
3590-02 Adapters for flat specimens
3590-3549 Adapters for Model 3549
3590-3648 Adapters for Model 3648
3590-03 Adapters for clip-on fracture mechanics gages
3590-04 Transverse extensometer adapter (Model 3560BIA)
3590-11 Transverse extensometer adapters (Models 3575AVG, 3575, 3475, 3580, 3565, 3911 and 3975)
3590-11-KIT Horizontal conversion kit for transverse extensometers – consists of legs for horizontal configuration, additional springs, and 3590-11 adapters; enables verification of transverse extensometers in the orientation that will be used for testing, as required by some calibration and verification standards
3590-06 Adapters for large averaging extensometers (Models 3542RA and 3442RA1)
3590-05
Circumferential adapters for Model 3544
3590-4013 Shear adapters for Model 4013
3590-3421
Shear adapters for Model 3421
3590-07
 100 mm (4 inch) extension post for long gauge length extensometers
3590-55-10 250 mm (10 inch) extension post for long gauge length extensometers
3590-55-24 600 mm (24 inch) extension post for long gauge length extensometers
Custom – contact Epsilon for adapters to fit Models 7650A, 7650, 7651, and 3567
Note: Model 3590VHR and 3590 calibrators include 9.52 mm (0.375 inch) diameter smooth round adapters

Optional temperature and humidity sensor for the Touch Display

Download Data Sheet

Product Videos

Digital extensometer calibrator with software position readout (included Touch Display digital readout not shown)

3590VHR Extensometer Calibrator Software Demo

With Epsilon’s in-house laser interferometer system, the full high resolution calibrator system can be verified to ASTM E83 and ISO 9513 specifications traceable to NPL. No longer do customers have to rely on micrometer head only calibrations. With Epsilon high resolution systems, you are assured compliance. When looking for a calibrator to meet ASTM and ISO specifications, the accuracy of the device is key for compliance, which is why full system calibration is essential to meet ISO 9513 and ASTM E83 requirements.

Epsilon is one of the only companies in the world with the capability to perform full system calibrations on high resolution extensometer calibrators.

Model Number:

3590VHR

Standards Labs in most countries have signed a Mutual Recognition Arrangement, “CIPM MRA”, bipm.org/en/cipm-mra/, making the Standards Labs effectively equivalent and traceable to each other. This includes NIST in the USA, the NPL in the UK and many others. Services of the NPL are equivalent to those offered by NIST and are recognized by NIST through this agreement of reciprocity.

 

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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