Micron
Field of application: The MICRON extensometer is indicated for the largest part of the tests which sizes and characteristics fall within the technical specification. The high resolution, the accuracy and the long stroke allow to determine almost all the characteristics desired in the most part of the tests, including Young modulus, Rp 0,2, A%. This extensometer is not suitable for compression tests. Cyclical tests are admitted as long as the required deformation does not fall under the initial zero. The device is placed on the back of the testing machine and the support can be chosen in one or two hinges (the last one allow to turn out the extensometer without remove the sample). In case of single-column machine, the extensometer can be mounted on left or right side of the frame.
Specific function:
• Easy exclusion and reactivation
• Measurement Base with continuous regulation (over 25 mm)
• High measurement resolution for small displacements, coupled
with long a stroke measurement (with lower resolution)
• Automatic closure/opening of the arms
• Self-adaptability to the specimen thickness
• Unlimited deformation speed
Construction and principle of functioning
The MICRON extensometer uses a double measurement system:
deformation up to 2 mm are measured using a LVDT probe with high
resolution; differential encoders linked to the arms through a inextensible
wire are instead used for high deformation measurement. The arms are
free to move for the effect of the specimen dragging; counterbalances
assure the minimum strength.
The measurement base is easily configurable using a computer assisted procedure that drive the user in the
device setup. Different bars/ extensions are provided to cover all the required Measurement Bases.
Standard kit is supplied for Measurement Bases from25 up to 100 mm. Additional kit (optional) allow base up to
250 mm. Bases less than 25 mm are also available (optional) in fixed steps (not adjustable): 10, 15 & 20 mm
Two versions of the device are available:
• Short arms for machines up to 100 KN (bench machine)
• Long arms for machines up to 2000 KN (floor machine)
Note: the MICRON extensometer can be used exactly as a PLAST extensometer. If necessary is also
possible to replace the steel knives with rubber knives (depending on the material to be tested).
