Longstroke Extensometer

The longstroke extensometer is especially used for direct extension measurement on specimen with medium and large extensions in tensile or hysteresis tests and also in temperature chambers with extended sensor arms. Safe operation is ensured, even with whipping specimen, e.g. elastomers, through a solid mechanical construction of the guiding elements and the tiltable knive edges.

Advantages of the Longstroke Extensometer

• Can be used up to specimen break, even with high forces and brittle specimen material
• The drag forces are very small
• It has a very large measurement path
• Control of the extensometer is via the testing program available

The ProLine longstroke extensometer is suitable for direct elongation measurements on all extendable materials such as rubber, plastic, leather, textiles, etc. It serves for exact determination of yield strengths and extension at break in tensile tests.

Advantages of the ProLine Longstroke Extensometer

• They have a very large measurement displacement (minus L₀).
• By the tiltable knife edges the fracture energy of the specimen not transferred to the measuring system and additional the knife edges are protected.

The zwicki Longstroke extensometer is suitable for direct elongation measurements on all extendable materials such as rubber, plastic, leather, textiles etc. It serves for exact determination of yield strengths and extension at break in tensile tests.

Advantages of the zwicki Longstroke Extensometer

• The resolution is high over the entire measurement range
• They have a very large measurement travel (minus L0)
• The drag forces are extremely low
• It is robustly built and has a measurement system that is insensitive to impact loading
• Control of the extensometer is via the testing program available