makroXtens II
The modular sensor arm extensometer, reliably and precisely adapted to your applications Download
- 450 mm
- -70°C ... +360°C
- Tensile, compression, flexure tests
- Cyclic tests
- Metals
- Plastics
- Films
- Fiber composite materials
- Other
The makroXtens is a proven extensometer that with various base models and functions, can be modularly adapted to different test requirements. The sensor arms are easily changed, and even a transverse strain extensometer can be added. The makroXtens is therefore universally applicable for tensile tests, compression tests, flexure tests, and cyclic tests on metals, plastics, composites, hard foams and/or hard metals that display low to moderate specimen strain—also suitable for use in temperature chambers.
- Traceability: via an Eeprom to the sensor arm, the testing system always knows automatically which sensor arms are being used.
- User independence through automatic L0 setting and automatic attachment and detachment of the sensor arms.
- Robust extensometer, which can measure up to specimen break. An integrated safety mechanism protects the sensor arms at specimen break.
- The modular design gives the makroXtens the desired handling: From a manually operated extensometer to a fully automated extensometer system.
Advantages and features of the makroXtens II HP
- With an installed base of more than 7,500 systems, the makroXtens II is the standard extensometer in the metals, plastics and automotive industries.
- Robust measuring system, also suitable for use in automated testing systems
- Can be used up to specimen break, even with high loads and brittle specimen material
- Optimum system protection provided by integrated safety mechanism and rotatable knife edges
- Accuracy Class 0.5 to EN ISO 9513
- Maximum error ±1 μm in the differential displacement measurement between two measurement points in the range of 20 μm to 200 μm, fully fulfilling the additional requirement stipulated by ISO 527-1 (2011)
- makroXtens is already calibrated from a measurement travel of 20 µm in class 0.5
- Extremely low drag force of the sensor arms (< 0.05 N)
- Sensor arms can be replaced quickly without any tools.
- Knife edges can be set for round or flat specimens through simple rotation
- Sensor arm contact pressure can be freely adjusted
- Compression and flexure tests can be performed by simply changing the sensor arms
- Large measurement range remains consistent due to automatic and central tracking of the specimen by the measuring system. The maximum measurement travel is always available
- Measurement accuracy is specifically increased further in the initial measurement range by an intelligent, patent-pending drag fixture (HP version).
- The HP version is approved for closed loop strain rate control to ISO 6892-1 (2009) Method A (1) and to ASTM E8 – 09 Method B
- Deformation of the specimen is recorded in the elastic and plastic deformation range throughout the entire test until specimen break.
- Very high resolution and measurement accuracy over the entire measurement range
- An EtherCAT interface is integrated into the electronics and the extensometer as standard, eliminating the need for an additional measurement module
- The measured values are transferred from makroXtens II with the full testControl II measured value acquisition rate, providing a sufficient number of measured values even for quick tests with short test times.
- The maktroXtens II HP with 300 mm long sensor arms has a resolution of 0.006 μm, enabling the extensometer to continue to supply a sufficient number of measured values for tests with minimal strains/extensions (e.g. tests on ceramics, high-strength or brittle materials). This high resolution is also advantageous for strain control to ISO 6892 Method A (1).
- makroXtens II can be combined with the motorized fine strain extensometer, allowing highly accurate initial range strain measurement to be performed separately on each side of the specimen. This is extremely important, for example, for measuring the Young's Modulus on metals.
- All makroXtens II extensometers are fully upgradeable (automatic gage-length adjustment, sensor arms for tensile, compression, flexure and temperature testing, transverse strain extensometer, fine-strain extensometer). Retrofitting can be carried out quickly and easily on site.
Extensions
Furthermore, various optional units are available for expanding the functionality of makroXtens II:
- Various basic models with resolutions of up to 0.006 µm
- Automatic L0 setting
- Drive unit for the sensor arms
- Various sensor arms for tensile, compression, and flexure tests and for tests in temperature chambers
- Various transverse strain extensometers and a drive unit
Due to their simple operation and high reliability, the non-contact videoXtens transverse strain extensometers are increasingly becoming the option of choice.They also stand out with their accuracy class 0.5 (ISO 9513), high level of robustness and the evaluation options in the testing software.
The optical transverse strain extensometers videoXtens T-40 HP and videoXtens T-160 HP measure the change in width at the specimen edge without manual markings on the specimen thanks to the intelligent edge detection algorithm. Measurements can be taken at 1-10 measuring points and both the individual values and the average value are provided.
The videoXtens T-160 HP sets a new standard for r-value measurement: lower dispersion of the r-values, measurement over the entire gauge length in accordance with the recommendation of ISO 10113:2020 and other powerful functions have elevated it to this position.
The classic option among tactile transverse strain extensometers is the mechanical transverse strain extensometer, which measures via one, two or four measuring lines. It is mounted on the sensor arm extensometer and therefore does not apply weight on the specimen. It can be attached to and removed from the specimen either manually or fully automatically.
Alternatively, you can also use clip-on solutions for the change in width measurement.
makroXtens ProLine
In contrast to the makroXtens II, the modular structure of the ProLine makro extensometer is limited.
In its basic configuration, the ProLine makro extensometer is already a complete measuring system. It includes a sensor arm that is 300 mm long.
Advantages:
- Deformation of the specimen is recorded in the elastic and plastic deformation range throughout the entire test until specimen break.
- Low drag force and the ability to adjust the contact force of the sensor arms as needed means you can test sensitive specimens reliably and with traceability.
- Very high resolution and measurement accuracy over the entire measurement range.
- Tiltable knife edges prevent damage to the sensor arms and knife edges at specimen break.
- The knife edge geometry can be adjusted easily and without tools by rotating the knife edges, allowing you to test flat as well as round specimens.
- Quick release fastener for sensor arms, enabling them to be replaced without the use of tools.
- Sensor arm clamping force can be adjusted steplessly.
- Centricity is automatically ensured by positioning in the test area.
- Accuracy class 1 to EN ISO 9513.
