Preparing for Use
2-3
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Preparing for Use
Remove the extensometer from its protective
box and install the gauge length pin. This
will prevent damage to the extensometer
while handling and will set the gauge length
accurately when attaching the unit to a test
specimen.
Select and install a gauge length extender to
match the output characteristics of the
extensometer to the particular specimen
under test. Remove the upper knife edge by
removing the two socket head cap screws
securing the knife edge to the fixed (black)
beam, using the ball end hexagon wrench
provided in the accessories kit.
When installing a short extender (12.5 mm or
15 mm), orient the extender so that the wide,
raised shelf on the end of the extender is
toward the beam of the extensometer. Set the
knife edge into the wide recessed shelf at the
other end of extender and secure the
assembly to the extensometer beam using
two long socket head cap screws inserted
through the knife edge, all the way through
the extender and into the threaded holes of
the beam. tighten the screws snugly, but do
not overtighten.
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