WAGNER FORCE TEN Operation Manual - page 9
FORCE TEN
™
FDX FORCE GAGE
16
FORCE TEN
™
FDX FORCE GAGE
17
CALIBRATION
CALIBRATION
E.
Calibration
FDXshouldbeperiodicallytestedtoverifyitiswithinthespecifiedtolerance.
E.1 Procedure Description
• Verification-TestingCalibration - Certified weights are applied in tension
and compression to determine if the FDX can be certified and if the calibration
procedure is necessary.
• Calibration - The FDX has Auto-Calibration enabling the gage to be calibrated
by one full capacity test weight.
E.2 Verification-TestingCalibration
Warm-up FDX for 2-3 minutes after power-on to stabilize the electronics.
To verify, a five-point tension and compression test is recommended with weights
equal to 20%, 40%, 60%,80%, and 100% of FDX capacity. If the displayed weight
differs more than ±0.3% of full scale ±1 least significant digit, FDX is out of tolerance.
Accuracy verification requires testing fixtures: a test stand capable of supporting
weights equal to the FDX capacity, and fixtures for applying test weights in tension
and compression. Testing fixtures are available from Wagner Instruments.
E.3 Auto-Calibration (L CAL)
Auto-Calibration is used to return the FDX to its specified accuracy after verification
indicates the FDX is out of tolerance, or if obvious that readings are incorrect.
Certified NIST traceable test weights are recommended, resulting in an NIST
Calibration Certificate. Test weights are available from Wagner Instruments.
Unless FDX is tested with E.2 verification and an NIST Calibration Certificate
issued, FDX is not certified to NIST standards. If certification is not required,
Auto-Calibration is adequate in returning FDX to specified accuracy.
AfterAuto-Calibration,FDXaccuracyshouldbeconfirmedusing
E.2Verification.
E.3.1 Auto-Calibration (LCAL) Procedure
Test weights must match the Force Cell Module capacity to be tested.
Set UNITS to lbf - all calibrations are performed in pounds (lbf).
Attach FDX to the calibration test stand, and stop all movement.
Enter the set-up menu:
• Turn FDX off.
• Push / Hold
ZERO; push ON/OFF.
• Release
ON/OFF, then ZERO, AoFF is displayed.
Gage set-up:
•
SCROLL to L CAL option.
• Push
SELECT - FDX displays null.
• Push
SELECT - FDX displays a force cell capacity after zero flashes.
If the capacity shown is not that of the attached Force Cell Module, SCROLL
to the correct Force Cell Module capacity and proceed.