Barrus ElastExt Contact Extensometer
Manufactured by Barrus
Ideal for applications where large elongation capability, reliability, and straightforward operation are essential, the ElastExt contact extensometer is specifically designed for high-elongation measurements on elastomeric materials.
Designed to be compatible with Barrus’s range of Barrus Grey and Barrus RED range of universal testing machines, it provides precise axial strain measurement with minimal influence on the specimen.
Price on quotation
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 |
