Chatillon DFX II Series User manual

- 1 -
Part No. NC003198
July 2013
DFX II Series
Digital Force Gauge
User Manual
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- 2 -
Features
When designing custom fixtures ensure
the load rating of the custom fixtures
exceed the load rating of the load cell in
the force gauge being used. i.e. If the load cell is
rated for 100 LBF the custom fixtures should have
a load rating greater than 100 LBF.
The DFX II Series have the following standard
features:
l+0.3% of Full Scale Accuracy
lLarge, Easy-to-Read LCD Display
lSelectable Units (ozf, gf, lbf, kgf, N)
lLockable Units
lNormal and Peak Measurement Modes
lSelectable Languages (English, French, Spanish,
Portuguese, German, Chinese)
lAutomatic Power Save Shutdown
lBattery Operation 70 to 100-hours of
continuous use
lUniversal Battery Charger
lInternal Calibration Procedure
Icons
WARnInG
The raised hand icon warns of a situation or condition that may lead to personal injury
or death. Do not proceed until the warning is read and thoroughly understood.
Warning messages are shown in bold type.
DAnGERoUs VoLTAGE
The lightning icon warns of the presence of an uninsulated dangerous voltage within
the product enclosure that might be of sufcient magnitude to cause serious shocks
or death. Never open the enclosures unless you are an authorized and qualied
Chatillon® service personnel. Never open any enclosure when power is connected to
the system or its components.
cAUTIon
The exclamation point icon indicates a situation or condition that may lead to equip-
ment malfunction or damage. Do not proceed until the caution message is read and
thoroughly understood. Caution messages are shown in bold type.
noTE
The note icon indicates additional or supplementary information about the action,
activity or concept. Notes are shown in bold type.
cAUTIon
HIGH FoRcEs ARE oFTEn InVoLVED WITH THE
MATERIAL TEsTInG PRocEssEs.
THE PRoDUcT Is noRMALLY UsED UnDER BAT-
TERY PoWER. HoWEVER, MAIns PoWER MAY BE
UsED.
IF THE EQUIPMEnT Is UsED In A MAnoR noT
sPEcIFIED BY THE MAnUFAcTURER, THE
PRoTEcTIon PRoVIDED BY THE EQUIPMEnT MAY
BE IMPAIRED.
To MAInTAIn ALL AsPEcTs oF THE sPEcIFIcATIon,
onLY AMETEK® APPRoVED AccEssoRIEs,
connEcTIons AnD coMPonEnTs sHoULD BE
UsED.
sTRIcTLY ADHERE To ALL sPEcIFIED sAFETY
PRocEDUREs
READ THIs MAnUAL BEFoRE UsInG THIs PRoDUcT.
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- 3 -
Introduction
The Chatillon®DFX II Series digital force gauges is a battery-operated force indicator. It uses a NiMH bat-
tery for power. It may also be used with the DFX II battery charger/charger (included) supplied.
The DFX II Series may be used to measure and display tensile or compressive loads at an accuracy of +0.3%
of full scale. The DFX II Series may also be set to capture the peak tensile or compressive load. The DFX Series
is available in four models having four different capacities and user-selectable units of measurement.
Model ozf gf lbf kgf N
DFX2-010 160 x 0.2 5000 x 5 10 x 0.01 5 x 0.005 50 x 0.05
DFX2-050 800 x 1 25000 x 20 50 x 0.05 25 x 0.02 250 x 0.2
DFX2-100 1600 x 2 50000 x 50 100 x 0.1 50 x 0.05 500 x 0.5
DFX2-200 - - 200 x 0.2 100 x 0.1 1000 x 1
The gauge may be setup to display text in English, French, German, Spanish, Portuguese and Chinese.
Conformance
The Chatillon DFX II Series has been assessed against the essential health and safety requirements of the
Low Voltage and the EMC Directives listed and found to be in compliance.
BS EN 61010-1:2010 Safety Requirement for Electrical Equipment
BS EN 61326-1:2006 Electrical Equipment for measurement, control and laboratory use:
General Requirements
BS EN 61326-2-3:2006 Electrical Equipment for measurement, control and laboratory use:
Transducers with integrated or remote signal conditioning
The DFX II Series is a RoHS and WEEE compliant device.
Packaging
The Chatillon DFX II Series is supplied with the
following standard accessories:
lFlat Adapter, 100 lbf (p/n SPK-FMG-011A) or
lFlat Adapter, 200 lbf (p/n SPK-FMG-011B)
lHook Adapter, 50 lbf (p/n SPK-FMG-012A) or
lHook Adapter, 100 lbf (p/n SPK-FMG-012B) or
lHook Adapter, 200 lbf (p/n SPK-FMG-012C)
lDFX II Universal Battery Charger/Charger
(p/n charger SPK-DF2-UNIV)
lDFX II Carrying Case (SPK-DF-118)
lCertificate of Conformance
Optional Certificate of Calibration with Data is available.
The DFX II is supplied with one (1) flat adapter and (1)
hook. The accessory supplied is dependent on the DFX
II capacity.
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- 4 -
Turn Gauge On or Off.
Changes measurement units: ozf, gf, lbf, kgf,
N. May be disabled so that units cannot be
changed. (See Units Lock Feature).
Select to view/capture peak measurements.
Change between Normal and Peak.
Select to Zero measurement or to Tare up to
10% of the gauge’s capacity.
Note: When in INFO mode, select the Zero key
to exit and return to Home.
Select to view gauge information and to select
gauge operating options. (See Using INFO Key).
Keypad
The Chatillon DFX Series has a rubber keypad
containing the following keys:
lOn/Off Key
lUNITS Key
lPEAK Key
lZERO Key
lINFO Key
Display Layout
The Chatillon DFX II Series has a high resolution,
dot-matrix LCD, 8 lines, 21 characters. Display
contrast is set at the factory and requires no ad-
justment. The load bargraph, at the bottom of the
display, indicates the load currently being applied
to the internal load sensor. The bargraph fills from
the center location with tensile loads measured to
the left and compression loads measured to the
right. A load direction indicators shows whether
the applied load is tensile or compressive.
T
LBF
1.23 Norm
q
q
C
Change Mode
Message Prompt
Battery Status
Auto Shutdown feature is ON
Units Lock feature is ON
Measured load bargraph
Mode indicator
Units of measurement
Measured result
T
LBF
11.23 Norm
q
q
C
Tensile load indicator
Compression load indicator
Tensile load applied to sensor
T
LBF
1.23 Norm
C
Compression load applied to sensor
Note
The bargraph fills from the center and load direction
indicator appears when load is being applied to the
internal load sensor.
q
q
Peak
Units
i
Ø

q
Peak Filter is ON
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- 5 -
View Peak Result
The Chatillon DFX II Series will display the peak
(maximum) load achieved for a test. There are
two methods to view peak results:
1. Place gauge in Normal mode. Apply a push
or pull force against the load sensor. Select the
PEAK key. View the peak result.
2. Place gauge in Peak mode by selecting the
PEAK key before performing the test. Apply a
push or pull force against the load sensor. View
the peak result.
T
LBF
1.23 Norm
q
q
C
Peak
T
LBF
4.56 T-PK
q
q
C
Peak
Peak
Selecting Mode
The DFX II Series has three measurement modes:
Normal, Tension Peak (T-PK) and Compression
Peak (C-PK). Select the Peak key to display the
peak load measured in tension or compression.
Use the zero key to clear the peak reading and to
prepare the gauge for the succeeding measure-
ment.
T
LBF
1.23 Norm
C
Change Mode
T
LBF
1.23 T-PK
C
Change Mode
T
LBF
1.23 C-PK
C
Change Mode
Peak
Peak
Zero and Taring
The DFX II Series has a dedicated Zero key for
zeroing results or taring. You may tare out up to
10% of the DFX II gauge’s rated capacity. Select
the Zero key to zero or tare.
T
LBF
0.0 C-PK
C
T
LBF
7.89 C-PK
C
Peak
q
q
q
q
q
q
Note
The corresponding load direction indicator appears
when viewing a peak load result or when load is
being applied to the internal load sensor.
Ø
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- 6 -
Using the INFO Key
The INFO (information) key is used to display the
gauge’s characteristics such as firmware revision.
It is also used to view Overloads and to set the
Units Lock feature.
Depressing the INFO key cycles the firmware
through the following functions:
1. Capacity
2. Firmware Revision
3. Overload History
4. Battery Life
5. Automatic Shutoff
6. Units Lock
7. Display Language
View Capacity
The DFX II Series displays its capacity x resolution.
To view the DFX II gauge’s capacity characteris-
tics, perform the following key sequence:
1. INFO <Capacity>
T
200 x 0.2 lbf
C
Capacity
1000 x 1 N
100 x 0.1 kgf
View Firmware
The DFX II Series displays its firmware informa-
tion. To view the firmware characteristics, perform
the following key sequence:
1. INFO <Capacity>
2. INFO <Firmware>
TC
Firmware
Model DFX-200
E91.99
Rev. No. V1.00
Rev. Date dd/mm/yy
View Overloads
The DFX II Series displays its Overload History.
To view the overloads, perform the following key
sequence:
1. INFO <Capacity>
2. INFO <Firmware>
3. INFO <Overload>
TC
Overload
No. of Overloads
No. of Tension 0
No. of Comp. 0
IIMPORTANT
Overloads can damage the load sensor. Always take
special care to observe the bargraph to ensure that the
sensor is not being overloaded.
Note
When in INFO mode, you may exit at any time by pressing
the ZERO key.
i
i
i
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- 7 -
View Battery Life
The DFX II Series displays its battery life. The DFX
II uses a rechargeable NiMH battery cell. To view
the DFX II battery life, perform the following key
sequence:
1. INFO <Capacity>
2. INFO <Firmware>
3. INFO <Overload>
4. INFO <Battery>
TC
Battery
Est Battery Life
100 hrs
9.00 Volts
Using The Battery Charger
The DFX II Series may be battery operated or operated
using the battery charger accessory (SPK-DF2-UNIV).
When the battery charger is used, the internal batteries
are charged. The battery charger may be plugged into a
115V or 230V source power outlet. The battery charger
contains three interchangeable plug styles: USA, EURO
and UK.
1. Place the correct plug onto the
battery charger.
2. Plug the battery charger into the
source power outlet.
3. Plug the battery charger into
the DFX II power input.
4. Press the DFX II On/Off key to
turn power ON.
1
4
3
2
IMPORTANT
Use the Chatillon Battery Charger that comes with
the DFX II Series digital force gauge.
Do NOT use generic battery chargers. These can
permanently damage the gauge electronics.
Note
The DFX II will display “Recharge Battery” when the
battery voltage drops to approximately 4.5VDC
i
To charge the DFX force gauge plug the phone jack
of the supplied universal battery charger into the DFX
force gauge then plug the battery charger into the
correct AC power outlet. Ensure the correct power is
applied to the battery charger. Never plug the USA
2-prong 115VAC charger into a 230VAC power source.
To obtain a full charge it is recommended the DFX force
gauge is charged for 15-20 hours. The DFX force gauge
should get approximately 70 to 100 hours of battery life
on a single charge.
A battery icon appears on the main operating display
and operates like a bar graph. When the gauge has a
full charge, the battery icon appears full. As the battery
voltage diminishes, the battery icon will start to empty.
You may view the estimated battery life based on cur-
rent usage in hours by depressing the “i” key until the
battery life screen appears.
The DFX force gauge will alert you when the battery
assembly needs to be recharged by adding a message
to the main test screen “Recharge Battery”. The force
gauge will shutdown automatically if the battery voltage
reaches approximately 4.5VDC.
CAUTION: Do not attempt to charge the
Chatillon DFX series force gauge with any
other charger than the one supplied with
the force gauge or supplied by an authorized
Chatillon dealer. The nickel metal hydride batteries are
temperature sensitive and the battery charger is specifi-
cally design to properly charge this battery assembly
without damaging it.
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- 8 -
Reversing the Housing
The DFX II Series comes from the factory with
the measuring shaft located at the bottom of the
gauge when reading the display.
In applications where the measuring shaft is re-
quired to be at the top of the gauge, simply reverse
the housing.
1. Turn power to the gauge OFF.
2. Remove two (2) 6/32 screws on
the gauge housing using Hex key
supplied with the DFX II.
3. Rotate the top housing 180-de-
grees being careful not to strain or
damage the internal wiring.
4. Re-assemble gauge housing
using two #6-32 hex screws.
DFX II gauges shown with top housing reversed.
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- 9 -
Selecting Units
The DFX II Series has a dedicated Units key. Select
to display results in different units of measure.
DFX II-010, DFX II-050 and DFX II-100 models may
display units as ozf, gf, lbf, kgf or N.
The DFX II -200 will display lbf, kgf or N only.
The Units key may be disabled so that the Units
cannot be changed by the operator. See Units Lock
Feature.
T
OZF
1.23 Norm
C
Change Units
Units
T
GF
1.23 Norm
C
Change Units
Units
T
LBF
1.23 Norm
C
Change Units
Units
T
KGF
1.23 Norm
C
Change Units
Units
T
N
1.23 Norm
C
Change Units
TC
Auto Shutdown
Peak
TC
Auto Shutdown
Peak
Auto Shutdown Status
PEAK to Change
INFO to Proceed
OFF
Auto Shutdown Status
PEAK to Change
INFO to Proceed
ON
Auto Shutdown Feature
The DFX II Series has an option to automatically
shut off power when the gauge is not being used
during a 30 minute period, e.g. no key presses.
To enable the Auto Shutdown feature, follow this
setup procedure and depress the following keys:
1. INFO <Capacity>
2. INFO <Firmware>
3. INFO <Overload>
4. INFO <Battery>
5. INFO <Auto Shutdown>
When the Auto Shutdown is ON, the gauge power
will automatically be turned OFF after 30 minutes
of inactivity, e.g. no key presses. This helps save
battery life.
T
OZF
1.23 Norm
C
Automatic Shutdown Indicator when On.
Note
The DFX II will shutdown, when the battery voltage
is at approximately 4.5Vdc.
Replace batteries or use charger accessory.
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- 10 -
Units Lock Feature
The DFX II Series has an option to “lock the units”.
This prevents the operator from changing the units
of measure and disables the UNITS key.
To enable the Units Lock feature, follow this setup
procedure and depress the following keys:
1. INFO <Capacity>
2. INFO <Firmware>
3. INFO <Overload>
4. INFO <Battery>
5. INFO <Auto Shutdown>
6. INFO <Units Lock>
TC
Units Lock
Units Lock Status
TC
Units Lock
PEAK to Change
INFO to Proceed
ON
Peak
Peak
Units Lock Status
PEAK to Change
INFO to Proceed
OFF
T
LBF
1.23 Norm
C
Units Locked
Units
Note
The Units Locked icon appears when this option is
ON. Pressing the UNITS key will not change
the units of measurement.
T
LBF
1.23 Norm
C
Shown: Units Lock feature is ON.
q
q
T
LBF
1.23 Norm
C
Shown: Units Lock feature is OFF.
q
q
q
q
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- 11 -
Selecting Language
The DFX II Series allows users to select their display
language. Textual information can be displayed in
the following languages: English, Spanish, French,
Portuguese, Chinese and German. To select your
display language, follow this setup procedure and
depress the following keys:
1. INFO <Capacity>
2. INFO <Firmware>
3. INFO <Overload>
4. INFO <Battery>
5. INFO <Auto Shutdown>
6. INFO <Units Lock>
7. INFO <Language>
Language
Peak
Lenguaje
Peak
PEAK to Change
INFO to Proceed
ENGLISH
PEAK para cambio
INFO para proceder
ESPANOL
Langue
Peak
PEAK pour changer
INFO pour realiser
FRANCAIS
Idioma
Peak
PEAK para mudar
INFO para continuar
PORTUGUES
TC
TC
TC
TC
T
q
q
Sprachauswahl
Peak
PEAK zum wechseln
INFO zum fortfahren
DEUTSCH
TC
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- 12 -
Enabling Peak Filter
The DFX II Series has a Peak Filter option that
controls the sampling rate of the gauge.
The DFX II is shipped from the factory with the Peak
Filter ON. An icon on the display indicates when the
Peak Filter is ON.
When the Peak Filter is set to ON the Peak Capture
is 40Hz. When it is set to OFF the Peak Capture is
1000Hz.
To change the Filter (Sample Rate) for your DFX II,
follow this setup procedure and depress the follow-
ing keys:
1. INFO <Capacity>
2. INFO <Firmware>
3. INFO <Overload>
4. INFO <Battery>
5. INFO <Auto Shutdown>
6. INFO <Units Lock>
7. IINFO <Language>
8. INFO <Filters>
Peak Filter
Peak
Peak Filter Status
PEAK to Change
INFO to Proceed
ON
TC
Filter
Peak
Peak Filter Status
PEAK to Change
INFO to Proceed
OFF
TC
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- 13 -
Affixing Adapters & Fixtures
The DFX II Series has a threaded load sensor shaft.
It accepts threaded adapters, grips or fixtures
directly. Couplers may be used to adapt to different
thread sizes.
The DFX2-010, DFX2-050 and DFX2-100 models
have a #10-32 male threaded load sensor shaft.
The DFX2-200 has a 5/16-18 male threaded load
sensor shaft.
Be careful to not over tighten adapters as this
can damage the load sensor. Adapters should be
torqued to 5 in-lbs (45 N-m).
Using Handle Assemblies
The DFX II Series may be used with the optional
handle assembly (p/n SPK-DF-HANDLE) or pistol
grip (p/n SPK-FMG-141).
(p/n SPK-DF-HANDLE)
(p/n SPK-FMG-141)
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- 14 -
Accessories
Extension Rods
SPK-FMG-013B (5/16-18)
SPK-FMG-013A (#10-32)
Hooks, Stationary
Chisel Points
Points
Notches
Hooks, Swivel
Couplers
SPK-FMG-008B (5/16-18)
SPK-FMG-008A (#10-32)
SPK-FMG-009A (#10-32)
SPK-FMG-009B (5/16-18)
SPK-FMG-010A (#10-32)
SPK-FMG-010B (5/16-18)
NC000721 (5/16-18)
NC000725 (5/16-18)
SPK-FMG-012C (5/16-18)
SPK-FMG-012A (#10-32)
ML3867 (#10-32)
ML3850 (#10-32)
ML3869 (5/16-18)
ML3868 (5/16-18)
17160 (#10-32 to #10-32)
17057 (#10-32 to 1/4-20) 17056 (1/4-20 to 5/16-18)
13048 (1/4-28 to 5/16-18)
SPK-FMG-012B (#10-32)
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- 15 -
Mounting Your DFX II
to a Chatillon Tester
The DFX II Series may be used with a Chatillon
mechanical or motorized force tester. The chart
shows the Gauge Adapter Plate that may be
required to fit the gauge to the tester.
Test Model Adapter Part No.
MT150 SPK-MT-0001
MT500 SPK-MT-0004
LTCM-100 Not Required
LTCM-500 Not Required
TT NC002582
SPK-MT-0001
SPK-MT-0004
NC002582
Note
These adapters are especially designed to ensure
gauge/tester centerline alignment.
Shown: The DFX II attached to the MT150 crdigital force
gauge used with the Chatillon MT150 tester. attached
to the MT150 crosshead using the SPK-MT-0001 kit
(top right)
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- 16 -
IMPORTANT
The sensor used in your DFX II Series gauge is temperature sensitive. The gauge should be turned
ON and allowed to acclimate to ambient temperature before normal use and before being calibrated.
A 5 minute “warm-up” period is recommended.
IMPORTANT
Gauge calibration should be performed only by those properly trained to service and calibrate Chatil-
lon instruments. Factory service and calibration is available on these instruments and traceable Cer-
tificates of Calibration are provided as requested.
Any changes made to the gauge using the calibration procedure voids the Certificate of Calibration
that accompanied your DFX II Series force gauge. Customers electing to calibrate their gauge do so
at their risk and with the understanding that they are effecting the performance of the gauge.
The Calibration Procedure described in the following pages will permit a user to calibrate and
re-characterize the loadcell being used. Exercise extreme caution when calibrating any precision
instrument.
Calibration Setup
A hanger must be used when calibrating the DFX
II Series digital force gauge in compression mode.
The hanger will ensure that side loading effects are
eliminated. Stacking deadweights onto a platen to
perform a compression calibration is NOT accept-
able.
Shown: a correct compression calibration setup using a
hanger fixture.
DFX II Series Calibration
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- 17 -
Procedure
The Chatillon DFX II Series is supplied with a Cer-
tificate of Conformance. The gauge was tested and
found to have a measurement accuracy of 0.5% of
full scale or better.
Calibration Procedure
The DFX II Series calibration procedure is contained
in the gauge firmware. The calibration is a four
point calibration: full scale compression, zero com-
pression, full scale tension, zero tension.
To access the calibration routine, begin with the
gauge power OFF.
Press the ON key. While the “Chatillon Logo” is
displayed, press PEAK then UNITS.
Model DFX II-100
Peak
Rev. No. V1.00
Chatillon
Rev. Date dd/mm/yy
TC
Units
Gauge Service
Peak
UNITS to diagnostics
TC
PEAK to calibrate
INFO to exit
Select Gauge Model
Peak
UNITS to change
TC
INFO to proceed
PEAK to exit
Select CALIB Units
i
UNITS to change
INFO to proceed
TC
DFX II-100
PEAK to go back
LBF
0.0
Note: The units of measure selected must correspond to
the weights that are being used for the calibration.
Place gauge in
i
horizontal position
TC
PEAK to go back
LBF
0.0
INFO to proceed
Note: Placing the gauge horizontally means to lay the
gauge perfectly flat on its backside making sure no load
is being applied to the loadcell shaft.
Place gauge in
i
compression mode and
exercise 3 times
TC
PEAK to go back
LBF
0.0
INFO to proceed
Note: You must use a hanger when performing the
compression calibration routine to eliminate side load
effects on the loadcell.
Note
Selecting PEAK during the calibration procedure
will take you back to the last step in the procedure.
q
q
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- 18 -
Remove all weight, but
leave tension
fixture attached
TC
PEAK to go back
LBF
0.0
INFO to proceed
Add full scale
tension load
100 LBF
T
PEAK to go back
LBF
100.0
INFO to proceed
DFX II Series Calibration
Remove all weight, but
leave compression
fixture attached
TC
PEAK to go back
LBF
0.0
INFO to proceed
Add full scale
compression load
100 lbf
T
PEAK to go back
LBF
00.0
INFO to proceed
Verify compression
calibration
TC
PEAK to go back
LBF
0.0
INFO to proceed
Place gauge in
tension mode and
exercise 3 times
TC
PEAK to go back
LBF
100.0
INFO to proceed
Note: Remove all weights but leave compression
calibration hanger attached to the force gauge.
Note: Carefully add weights equal to the DFX II gauge’s
full scale capacity to the hanger fixture.
Note: Verify the compression calibration by checking
both the full scale (span) and zero. When no load is
applied, the display should read zero. When full scale
weights are applied to the fixture, the display should
read the full scale weight equivalent.
Note: Exercise the loadcell three times by pulling on the
loadcell shaft.
C
Note: Carefully add weights equal to the DFX II gauge’s
full scale capacity to the hanger fixture.
Note
Selecting PEAK during the calibration procedure will
take you back to the last step in the procedure.
Cq
q
q
q
q
q
q
q
Remove full scale
load for zero
verification
T
PEAK to go back
LBF
100.0
INFO to proceed
Cq
q
i i
i i
i i
i
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- 19 -
Remove full scale
load for zero
verification
T
PEAK to go back
LBF
0.0
INFO to proceed
Verify tension
calibration
T
PEAK to go back
LBF
100.0
INFO to proceed
Save new calibration
T
PEAK to go back
LBF
0.0
INFO to proceed
C
Note: Remove all weights but leave tension fixture at-
tached to the force gauge.
C
C
Note: Verify the tension calibration by checking both the
full scale (span) and zero. When no load is applied, the
display should read zero. When full scale weights are
applied to the fixture, the display should read the full
scale weight equivalent.
Note: Select INFO to save the calibration.
q
q
i
i
i
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- 20 -
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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