An extensometer or strain transducer is a device used to measure the variation of the extension of a specimen, also known as strain measurement.
At Servosis we design and manufacture specific extensometers for tensile tests, compression tests, axial and diametral measurements, etc, and we have a wide range of extensometers for the direct measurement of the deformations produced in the specimens during the tests.
Our range of extensometers
Among our range of extensometer models we can find the following ones;
- Automatic pneumatic clamping
- Manual clamping with blades, with punch
- Digital measurement by encoder type sensor
- Analogical measurement by means of LVDT. Wheatstone bridge
- Measurement by artificial vision camera
In addition to incorporating this equipment to our testing machines, we can offer stand-alone measuring equipment equipped with analog or digital signal outputs to be used with any type of data acquisition equipment.
CDD Series
Manual axial extensometer up to specimen breakage for tensile tests.
❑ Lo 100-200 (other dimensions optional)
❑ Def. max. 50-100 mm
❑ Optionally pneumatic clamping
❑ Optoincremental measuring principle
CDA Series
Automatic axial extensometer up to specimen breakage for tensile tests Highly optimized for use in metal specimen tests according to UNE EN ISO 6892.
Lo 100-200-500mm (other dimensions available on request)
❑ Def. max. 50-100 mm (other dimensions optional)
❑ Automatic PC drives
❑ Clamping on round or flat specimens
❑ Optoincremental measuring principle
Epsilon Extensometers
Epsilon is the world’s leading manufacturer of extensometers, both in contact extensometry and laser-based solutions.
Epsilon has been collaborating for years with Servosis in the implementation of all its extensometer models in our measurement and control systems, with always satisfactory results.
Different specifications.
Great diversity of models for specific tests.
CDR Series
The CDR series is a cost-effective alternative as a hand-held extensometer for the calculation of yield strength and modulus of elasticity.
❑ Lo 50, 100
❑ Max. def. 2.5 mm
❑ Double mounting possible
❑ Wheatstone bridge principle of operation.
❑ Clamping on round or flat specimen
CDL Series
Lateral or diametral manual clamp extensometer
Specific for R-N index (acritude) measurements on sheets and strips, it is also suitable for measuring lateral deformation on other types of materials such as plastics or composite materials.
❑ Type of sensor LVDT
❑ Nominal stroke: 3 to 10 mm
❑ Appreciation: 0.001 mm
❑ Linearity: 1%.
❑ Sample width: 10-25 mm (can be modified upon request)
CDO Series. Videoextensometers
CDO Series
Low-cost, general purpose optical extensometer.
❑ Extensometer equipped with one or two chambers for strain measurements on all types of materials.
Accuracy: Between 0.01mm and 0.002 mm depending on the camera model used.
Auto calibration.mark-based system.
Auxiliary illumination to avoid distortions due to ambient light.
❑ Measurements of localized deformations (crack tracking…).
X.CDO SERIES
High precision optical extensometers.
Servosis collaborates with the company X_sight in the integration of its range of non-contact extensometers with control systems based on our PCD2K software.
The combination of both products provides our customers with tailor-made, state-of-the-art solutions with the direct support of our technical service.
Laser Extensometer
Non-contact extensometer for elongation measurements.
❑ Non-contact measurement
❑ RS232 serial communication
❑ Multitude of models, technical characteristics depending on model.
STRAIN GAGES
Media systems for direct use of strain gages on the specimen.
❑ Operating principle wheatstone bridge unbalance.
❑ Different types of gauges.
❑ Amplifier with external zero value adjustment, and gain adjustment.
❑ Analog output signals +-10VDC through BNC type connectors.
❑ Direct connection with PCD2K control system.
❑ Optionally, specific software for strain gage calculations.
❑ Possibility of mounting as a stand-alone device.
Measurement on concrete specimens
System for the calculation of modulus in concrete specimens under Standard.
❑ Measurement of axial and diametral deformation under load.
❑ 4 LVDT probes, analog or digital
❑ Analog output signals +/- 10VDC via BNC type connectors
❑ Specific software
❑ Direct connection with PCD2K control system.
At Servosis we design and manufacture extensometry equipment tailored to the specific needs of our customers; extensometry for rubbers, elastomers, composite materials, structures, etc.
If you are interested in knowing more, please contact us! The right product with Servosis.
