Non-Contact Extensometers

Precision optical extensometers.

Gauge Lengths: User selectable, small as 2 mm
Measuring Ranges: <1% to >1000%, depending on gauge length and field of view
Field of View: 52 – 500 mm
Key Features: Non-contacting, high precision, high speed, telecentric optics, Instant Reset, Always On / Always Running, Laser Alignment

These extensometers are high precision non-contacting units for strain measurement in materials testing. They use a high speed laser scanner to measure the spacing between reflective tape strips on the sample. The measurement range is from 0.3 to 5 inches (8 to 127 mm). The gauge length is determined by the user. This allows high elongation measurements when shorter gauge lengths are used. The high resolution also allows accurate measurements of smaller strains.

Gauge Lengths: User selectable
Measuring Ranges: User selectable
Temperature Range: Ambient to 425 °C
Key Features: Non-contacting