FISCHER FISCHERSCOPE X-RAY 4000 Series, Operator'S Manual

Page: 119 / 170

FISCHERSCOPE
®
X-RAY 119
Calibration

Type With multi-coating systems, it may be the case that existing
interim coatings act as base material of a calibration stan-
dard or that coatings are not present. This setting is made
here.
7. Once you have entered all values of a calibration standard, click OK .
8. To enter additional calibration standards, repeat steps 3. to 7. for every calibration
standard. Before you enter an additional calibration standard, make sure that no line
is selected in the window
Input Calibr. Std. Set . Otherwise the values of the selected
standard will be changed.
9. Once you have entered all values of a calibration standard, click OK in the window
Input Calibr. Std. Set .
The calibration standard set is now entered and stored.
10. To check how many measurements will be performed
for each calibration standard, click Info .
The window
Modify product appears.
11. Click the tab Applica-
tion .
12. Check the following
values:

T_cal (sec) : Time for each individual measurement on the calibration standard

N_cal : Number of individual measurements on each calibration standard
Typically, the default setting applies but you do have the option of changing the values.
The following applies to the measuring time
T_cal :

The longer the measurement, the better the repeatability precision. Do not select
a measuring time that is too short; 30 or 60 seconds is a typical value.
The following rules apply to the number of individual measurements N_cal :

Pure elements, base materials or scatter spectra need to be measured only once.

Calibration standards must be measured several times on each standard, at least
three times but typically five times. Perform the measurements at different loca-
tions on the calibration standard.
13. To start the calibration, select Calibrate > Calibrate… .
WinFTM will prompt you to position the calibration stan-
dards in succession and to measure them.
Example: The calibration standard Cr/Ni/Cu with a
coating thickness of 2.58
μ m shall be measured now.
NOTE: To read the full name of the calibration standard,
click in the row and use the arrow keys to scroll back
and forth.