Coaxial Extensometers with Fixed Base Length

Extensometers used for measuring the extension of specimens in traction, particularly in the case of steel and brittle materials, are only able to detect strain during the first stage of the test, or rather, while the brittle materials conserve their elasticity as they have to be disconnected before failure.

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Highlights
Features
Specifications
Models
Standards

This simple and economic system fully satisfy these requirements because:

it is applied directly to the specimen
it remains connected until breakage
it measures extensions with high precision of both elastic and plastic stage and with the appropriate simple adjustment, it is connectable to almost all testing machines

The extensometers are basically made by 2 clamping devices and a middle tubolar steel part determining the gauge length of 200 mm.

Applied directly to the specimen up to the failure
Measures extension of both elastic and plastic stage
High precision electronic transducer
2 model dedicated to rebars
1 model dedicated to strands

Models	70-C0961/G	70-C0961/H	70-C0961/E
Measuring range dia. Min/Max	16 – 40	6 – 26	6.35 – 15.2 (strands)
Base length	200 mm	200 mm	600 mm
Transducer travel	75 mm	50 mm	50 mm