General
purpose extensometers for axial tensile, compression
and cyclic testing. Gage lengths from 0.5 to 2 inches
(and 10 to 50 mm) and travel ranges from 5% to 100%
of gage length.
These extensometers are for testing a wide range of
materials, including metals, plastics, composites and
ceramics. All will work in both tension and compression.
The dual flexure design makes them very rugged and insensitive
to vibrations and permits higher frequency operation.
They come standard with Epsilon’s Quick Attach Kit,
making it easy to mount the extensometer on the test
specimen in seconds, with one hand. If you wish, this
can be excluded, allowing mounting with springs or elastic
bands.
Optional high and low temperature ranges are available.
These cover the range from -265 C to +175 C (-450 F
to +350 F).
The 3542 extensometers are strain gaged devices, making
them compatible with any electronics designed for strain
gaged transducers. Most often they are connected to
a test machine controller. The signal conditioning electronics
for the extensometer is usually present or may often
be added. In this case the extensometer is shipped with
the proper connector and wiring to directly plug into
the electronics. For systems lacking the required electronics,
Epsilon can provide a variety of solutions, allowing
the extensometer output to be connected to data acquisition
boards, chart recorders or other equipment. See the
electronics section of this site for available signal
conditioning. |
Features
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May
be left on through specimen failure |
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High
accuracy, with many models offering 0.1% linearity.
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All
models have travel in both tension and compression and
can be used for cyclic testing. |
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Rugged,
dual flexure design for improved performance. Much stronger
than single flexure designs, this also allows cyclic
testing at higher frequencies. |
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Mechanical
overtravel stops in both directions. |
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Replaceable
arms and spacers for ease of repair. This also allows
changing the gage length for different test requirements.
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All
units meet existing ASTM and ISO requirements for accuracy.
All will meet ASTM class B-1. All meet ISO 9513, class
0,5. |
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Interface
with nearly any brand test system. |
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Hardened
tool steel knife edges are easily replaced. A spare
set comes with every extensometer. |
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Standard
Quick Attach Kit for quick, one hand mounting to specimens.
Works for both flat and round samples (Flats to 0.5x1
inch (12x25 mm) and rounds up to 1 inch (25 mm) diameter).
Optional arms available for larger samples. |
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Includes
high quality foam lined case. |
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High
and low temperature options extend operation from as
low as -265 C (-450 F) to +175 C (350 F). |
3542 with 2 in. gage length and 50% strain
travel.
Specifications
Full bridge strain gaged
design
Output: 2 to 4 mV/V, nominal
Excitation: 10 VDC typical, up to 15 VDC or VAC max.
Temperature range: standard (-ST) is -40 C to +100 C
Cable: integral ultra-flexible cable, 8 ft (2.5 m) standard |
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