Rev April 2006
Calibrating Your Gauge
Section Contents
Page
Accessing Embedded Procedure ..................... 2
Calibrating Your Gauge .................................... 3
About DFS Series Calibration ........................... 3
Select Gauge Model ......................................... 3
Select Calibration Units .................................... 4
Select Calibration Midpoint Value ..................... 4
Stabilize the Gauge .......................................... 4
Compression Calibration
Attaching to Compression Fixture ............... 4
“Flip Display” ................................................ 4
Exercising Loadcell ...................................... 4
Apply Zero Compression Load .................... 5
Apply Mid-Scale Compression Load ........... 5
Error Checking ............................................. 5
Apply Full Scale Compression Load ............ 5
Verify Compression Calibration ................... 6
Zero Verifi cation ........................................... 6
Tension Calibration
Attaching to Tension Fixture ........................ 6
“Flip Display” ................................................ 6
Exercise Loadcell ........................................ 6
Apply Zero Tension Load ............................. 7
Apply Mid-Scale Tension Load .................... 7
Apply Full-Scale Tension Load .................... 8
Zero Verifi cation ........................................... 8
Verify Tension Calibration ............................ 8
Calibrate Analog Output ................................... 9
Save Calibration ............................................... 9
IMPORTANT
The sensor used in your DF 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 7 minute “warm-up” period is recommended.
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Rev April 2006
Calibrating Your Gauge
IMPORTANT
Gauge calibration should be performed by an authorized Chatillon Distributor or by AMETEK if you require a
Certifi cate of Calibration. Organizations not recognized by AMETEK as Chatillon Distributors are not authorized
to perform calibrations on these precision instruments. Visit www.chatillon.com for a listing of authorized
Distributors.
Any changes made to the gauge using the calibration procedure voids the Certifi cate of Calibration that accompanied your DF 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 or sensor being used. Exercise extreme caution when calibrating any precision instrument.
Accessing Calibration Procedure
The DFS Series calibration procedure is embedded in
the instrument’s fi rmware.
To access, you will need to depress multiple keys in a
prescribed order. This procedure is designed to prevent
unauthorized users from recalibrating or recharacterizing
the sensor used with the gauge.
Model DFS-100
Rev. No. 1.00
Rev Date dd/mm/yyyy
Chatillon
www.chatillon.com
T
C
The customer is responsible for ensuring that only
authorized personnel have access to the calibration
procedure within the gauge fi rmware.
To enable the DFS Series calibration procedure, begin
with the gauge power turned OFF.
Press the power ON key. Allow the gauge’s sensor to
warm-up for a period of 7 minutes.
When the Title Display is shown, press the F2 key and
then the F1 key.
The gauge is now in Service Mode. Select ENTER to
begin the calibration procedure.
HELP
You must complete the entire calibration procedure in
order for the new calibration to take effect.
Model DFS-100
Rev. No. 1.00
Rev Date dd/mm/yyyy
Chatillon
www.chatillon.com
T
Gauge Service
Calibrate
>
Diagnostics
T
DIAG
C
C
HELP
You may abort the calibration routine at any time by
pressing the HOME key.
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Rev April 2006
Calibrating Your Gauge
Calibrating Your Gauge
Gauge calibration should be performed by an
authorized Chatillon Distributor or by AMETEK if you
require a Certifi cate of Calibration.
You may calibrate the gauge or verify the gauge calibration following this Gauge Calibration procedure.
At the Gauge Service main menu, select Calibrate.
Select Enter.
Gauge Service
Calibrate
>
Diagnostics
T
C
DIAG
About DFS Series Calibration
The DFS Series gauge requires a two point calibration
in both Compression and Tension directions. Masses
should be used that are CLASS 5 or better per ASTM
E617. Masses should be calibrated to local gravity.
Select Gauge Model
Your DFS Series gauge will automatically scale itself
based on the calibration and the gauge model selected.
You must specify the Gauge Model prior to performing
the calibration so the scaling is accurate.
Select F1 (Change) until the display indicates the
gauge model you are calibrating. The gauge model is
equivalent to the load capacity of the gauge in LBF. The
available models are:
DFS-250G
DFS-002
DFS-010
DFS-025
DFS-050
DFS-100
DFS-200
DFS-500
DFS-1000 (Not used with integral loadcell models)
Select Gauge Model
DFS-050
Enter to select
T
Change Keep
C
Select F3 (Keep) or ENTER to accept the displayed
gauge mode.
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