28
ATORN DFT
Calibration
7.3 Performing a calibration
Do not use the metal sheet (NF/FE or ISO/NF) supplied with the gage as
a reference part! As a rule, the material properties will not correspond to
the uncoated sample/reference part from your own production! The metal
plates serve purely as a function check!
Calibration on NF base material (applies only to FE+NF gage types): The
difference between the reference part temperature during the calibration
and the sample temperature during the measurement should be minimal.
Excessive temperature differences have an adverse effect on the measure-
ment accuracy.
Be carefully with the calibration foils. Replace soiled, bent, scratched or
cracked calibration foils or those with strong indentations. In particular
foils with thicknesses of less than 50 µm are subject to rapid wear. Recom-
mendation: Replace the calibration foils after no more than 100 to 200
measurements!
Before you start
•
The gage is switched on
•
The protective probe cap has been removed
•
Reference part and/or calibration foils are ready. Which parts you need
depends on the calibration method used.
Calibration - Procedures
•
Create new calibration again, see Page 28
•
Recalibration - Repeating an existing calibration, see page 29
7.3.1
Creating a new calibration – Procedure
1. Open the calibration function
New
:
Main Menu
> Calibrations > New
2. Select the appropriate calibration method for the desired batch: >
OK
If necessary, close the prompt window that appears by pressing
OK
.
3. Follow the routine and perform the calibration steps displayed (Zero, Foil
1/2). In this regard, refer to the descriptions in the sections "Calibration
step Zero", page 30 and "Calibration step Foil", page 32.
