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

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18 FISCHERSCOPE ® X-RAY
Components
To select the aperture
1. In the WinFTM main window select Product > Modify… .
The window Modify product appears.
2. Select the tab Application .
3. Click Collim. .
4. Select the collimator and click OK .
2.5.5 Shutter
The shutter is used to keep the primary x-rays from entering the measurement chamber and the en-
vironment.
The shutter is part of the safety system. The shutter closes immediately, when you open the cover
of the measurement chamber or when a malfunction occurs. X-rays can then no longer reach the
measurement chamber and the environment.
2.5.6 Specimen Lighting
The specimen lighting ensures good visibility of the specimen in the video window. The lighting
elements are white LEDs that are located in the area of the aperture.
Use the slide control in the video window to adjust the intensity of the illumination.
2.5.7 Primary filter
The primary filter consists of a thin foil made of nickel or aluminum, which is located between the
x-ray tube and the specimen to be measured.
By using a primary filter, the composition of the primary X-radiation can be influenced such that it
is optimally suited for the excitation of the respective specimen for x-ray fluorescence. Thus, unde-
sirable components of the fluorescence spectrum can be avoided from the outset.
Using a primary filter is useful for certain applications, however, it is not required in most cases.
The user requires special physical knowledge for a case-by-case evaluation of this question.
The primary filter can be controlled using the software, if the WinFTM extension SUPER is installed.
To change the primary filter:
1. In the WinFTM main window select Product > Modify… .
The window Modify product appears.
2. Select the tab Application .
3. Click Def.MA (local) .
The window Definition of measuring conditions… appears.
4. In the upper right field select the desired primary filter and click OK .