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Performing a Tensile Test
The Chatillon DFX II Series may be used to perform
a tensile test (also called a pull test). A tensile
test causes a pulling effect on the load sensor
shaft. The shaft is commonly equipped with a hook
adapter or some form of grasping fixture.
Normal Mode Test
Place the gauge into Normal mode by pressing the
PEAK key until the mode indicator about the units
of measure reads NORM. Normal mode means the
gauge will display the real-time load applied to the
load sensor shaft. The peak or maximum load is not
displayed in Normal mode.
Affix your tensile test adapter (hook, grasping
fixture, or the like).
Press the Zero key to zero or tare out the weight of
the adapter or fixture attached to the load sensor
shaft.
Press the UNITS key to setup your DFX II to display
load in your required units of measurement.
Apply a pull force to the load sensor shaft by pulling
on the sample under tester.
In a handheld test, make sure to keep the gauge
perpendicular to the centerline of the test sample
to avoid side loading effects, e.g. where load is not
being applied linearly through the load sensor shaft.
In a tester application, where the gauge is mounted
to a test stand, ensure that the center line of the
load sensor shaft is aligned directly with the sample
on the tester.
Observe the load bargraph on the DFX II gauge
to guard against overloads. If the bargraph ap-
proached being completely filled, stop the test
immediately to avoid an overload.
While you are pulling the sample, the tensile load
indicator will display (opposing arrows).
Once the test is completed, press the PEAK key
to observe the maximum tensile load that was
achieved during your test.
Peak Tensile Test (T-PK)
This test is performed identically to the Normal
Mode Test except the gauge is placed in PEAK
mode. Placing the gauge in PEAK mode automati-
cally “freezes and displays” the maximum load
achieved during your test.
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Affix Test Adapter
Affix your testing adapter to
the DFX II load sensor shaft.
“Finger-tight” the adapter to
the #10-32 threaded shaft.
Select Normal Mode
Place the DFX II in Normal
mode by pressing the PEAK
key until “NORM” is displayed
above the units indicator.
Select Units of
Measure
Select the UNITS key to specify
the units of measure you want
displayed.
Zero the DFX II
Select the ZERO key to zero
the DFX II and to tare out the
weight of the test fixture or
adapter.
Apply Pull Force
Apply a pulling force to the
sample under test. Observe
the load bargraph (fills from
the center towards the “T”)
and the Tensile Load Indicator
(arrows). The main display will
indicate the load being applied
to the load sensor shaft using
the fixture/adapter.
Observe Load
Read the force result from the
display. If you select the PEAK
key after you complete your
test, the DFX II will display the
maximum (Peak) load that was
achieved during the test.
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