laserXtens 2-120 HP/TZ

The high-temperature specialist for all specimens

The laserXtens 2-120 HP/TZ provides non-contact measurement of deformations on a range of materials in varying environmental conditions up to 2,000°C. The measuring principle eliminates the need to apply gauge marks. The laserXtens 2-120 HP/TZ provides a wide range of applications:

  • Tensile, compression, and shear tests
  • Tests on specimens where specimen contact is undesirable or not possible due to specimen condition or properties
  • Deformation measurements on specimens that might damage a contact-type measuring system due to brittle fracture
  • Tests at ambient and high temperature up to 2,000°C
  • One extensometer for all environmental conditions (e.g. furnaces, temperature chambers, induction, vacuum)
laserXtens 2-120 HP/TZ_with_high-temperature_furnace

Typical Application laserXtens 2-120 HP/TZ

Metals to ISO 6892-2

  • Specific advantages for this application:
  • Strain-rate controlled tests to ISO 6892-2 (high temperature) and to ISO 6892-1 (room temperature) Method A1 (closed loop).
  • Measurement of transverse strain and deflection without additional markings and without required hardware expansion (software option).
  • The adjustment of different gauge lengths is motor-driven.
  • The specimen is not affected by the laser light.
  • Even at elevated temperatures, sensitive specimens are not affected by the extensometer.
  • Sensor arms are maintenance-free and not prone to breaking.
  • Resistant to environmental influences (e.g. air currents); the flexible tunnel minimizes signal interference.
  • Temperature chambers and high temperature furnaces can remain completely closed. Openings are thermally sealed with glass windows.
  • Specimen markings are not required, saving time especially with high specimen throughput, as for example in the case of carousel solutions.

Key Advantages and Features

Testing without specimen marking

  • Testing without specimen marks
  • laserXtens' unique technology eliminates the need for specimen marking.
  • Significant time and cost savings, particularly with high specimen throughput.
  • The advantages are especially apparent with options covering multiple measuring points or entire specimen surfaces.
  • Easy to use in temperature chambers, where environmental conditions can make gauge mark application really difficult.
  • Ideal for automated systems - no manual specimen preparation required.
  • Testing without specimen marks
  • laserXtens' unique technology eliminates the need for specimen marking.
  • Significant time and cost savings, particularly with high specimen throughput.
  • The advantages are especially apparent with options covering multiple measuring points or entire specimen surfaces.
  • Easy to use in temperature chambers, where environmental conditions can make gauge mark application really difficult.
  • Ideal for automated systems - no manual specimen preparation required.

Simple operation

High accuracy

Automatic centering

  • Automatic centering increases measurement travel and measuring accuracy.
  • laserXtens tracks at half crosshead speed via the connection to the crosshead, keeping the testing operation automatically in focus and making optimum use of the measuring range.
  • This results in increased system accuracy; the gauge marks shift less in the image and are captured in the (more accurate) center of the lens.

Technical Data

Type

laserXtens 2-120 HP/TZ

Laser safety class to DIN EN 60825-1 (11-2001)

2[1]

Initial gauge length

Measurement with one camera

1.5 ... 25

mm

Measurement with two cameras

25 ... 120

mm

Measured displacement with speckle tracking[2]

1.5 ... 25 mm

32 mm - initial gauge length

25 ... 120 mm

30 mm (for fixed assembly)

60 mm (for automatic entrainment)

Measurement displacement flow measurement

After reaching the max. measurement displacement, switch to flow measurement mode

Resolution

0.11

µm

Accuracy class to EN ISO 9513

0.5

Temperature range

-150°C ... +2,000°C

Measurement frequency for standard setup

70

Hz

Max. measurement speed at measurement point

500

mm/min

Scope of delivery

Measuring head with motorized gauge length adjustment (automatic L0 setting), two digital cameras incl. high resolution telecentric lenses, two green laser light sources, high temperature tunnel for reduction of environmental influences, software for image acquisition, evaluation of cross-correlation and transfer to testXpert II (Version 3.71 or higher) or testXpert III, accessory case with scaling aid, INC module (for tC: RS module). Incl. connection to crosshead; the extensometer tracks at half test speed.

  1. No protective measures required.
  1. If necessary, restriction implemented via furnace or temperature chamber

Software Options for the laserXtens Extensometer

Strain distribution

The Strain Distribution option enables determination of local strains at multiple measuring locations along the specimen gage-length. Evaluation of up to 16 measuring locations is possible. This option also allows automatic real-time symmetrical adjustment of the initial gage-length around the necking (as per ISO 6892-1, Annex I).

Second measurement axis

This option allows local transverse strain to be measured simultaneously with determination of longitudinal strain.

2D dot matrix

This option allows two-dimensional measurement of dots on a planar specimen surface. This enables determination of local strains and inhomogeneities of the specimen under load. X and Y co-ordinates plus the distances between dots are available as measured values.
Up to 100 measurement dots can be measured in any desired arrangement or in matrix form.
Display in testXpert III is limited to 15 channels.

Deflection

laserXtens also determines the deflection for 3- or 4-point flexure tests. Measurement can be performed at one point (displacement of a measuring point) or at three points (relative displacement of the middle measuring point to the two outside measuring points) with a maximum measurement basis of 15 mm (laserXtens 7-220 HP 20 mm).

Top