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Benefits
- Wide measuring range and adjustable gauge length allow accurate tracking of large strains typically encountered in rubber and other flexible specimens.
- Robust mechanical design ensures stable and repeatable results, even under significant deformation.
- Suited for demanding testing applications involving elastomer materials.
- Requires no special specimen preparation.
- Construction supports measurement up to and including specimen break, enabling complete stress-strain analysis.
- Extensometer calibration service available.
| Parameter | Barrus ElastExt |
| Measurement principle | Contact extensometer |
| Application | Elastomers |
| Measurement type | Axial |
| Max. measuring range (extension) | 10–940mm – Lo |
| Gauge length (Lo) | 10–800mm (adjustable) |
| Min. gauge length | 10mm |
| Accuracy | Class 1 (<1%) from 10mm |
| Resolution | 0.01mm |
| Drag force | Max. 0.1 N |
| Influence on specimen | Minimal |
| Specimen type | Elastomeric materials |
| Measurement to break | Yes |
| Level of automation | Medium |
| Specimen preparation | Not required |
| Sensor / measurement system | Mechanical |
| Dimensions (W × D × H) | 160 × 130 (215 without arms) × 1265 mm |
| Weight | 6.5 kg |
| Max. specimen size | Width: 30 mm, Thickness: 18 mm |
| Key advantage | Large elongation capability |