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Performing a Compression Test
The Chatillon DFX II Series may be used to perform
a compression test (also called a push test). A com-
pression test causes a pushing effect on the load
sensor shaft. The shaft is commonly equipped with
a flat adapter or platen.
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 compression test adapter (flat, platen
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 pushing force to the load sensor shaft by
pushing 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 pushing the sample, the compressive
load indicator will display (converging arrows).
Once the test is completed, press the PEAK key to
observe the maximum compressive load that was
achieved during your test.
Peak Compressive Test (C-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 Push Force
Apply a pushing force to the
sample under test. Observe
the load bargraph (fills from
the center towards the “C”)
and the Compressive 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 will display the
maximum (Peak) load that was
achieved during the test.
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