FISCHER FISCHERSCOPE X-RAY XDLM 231, Operator'S Manual

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FISCHERSCOPE ® X-RAY 149
Calibration, Base Correction and Reference Measurement
6. Once you have entered all values of a calibration standard, click OK .
7. To enter additional calibration standards, repeat steps 3 to 6 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.
8. 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.
9. To check how many measurements will be performed for each
calibration standard, click Info .
The window Modify product
appears.
10.Click the tab Application .
11.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 meas-
uring 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 locations on the calibra-
tion standard.
12.To start the calibration, select Calibrate > Calibrate… .
WinFTM will prompt you to position the calibration standards
in succession and to measure them.
Example: The calibration standard Cr/Ni/Cu with a coating
thickness of 2.58 μm 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.