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Regularly check the filter in the HASKRIS tank. If there is a lot of debris it may be necessary to drain the tank and refill with distilled or reverse osmosis (RO) water only - NOT DEIONDeionized. The filter can be sprayed off in a sink taking care not to puncture the screening. If the water flow rate to the system begins to drop close to 4 L/minute it may mean there is a clog in the quick disconnect points behind the back panel or the sprayer head in the X-ray tube housing needs to be cleaned.
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Compare the QAQC corundum scan with past results. X-Ray Tubes deteriorate. When the intensity of the Corundum scan is approximately half of what it was at the date of installation it is time to replace the tube. Check the scans for Tungsten lines, if any appear it is time to replace the X-Ray tube even if the intensity is still acceptable.
Making a Parameter File
A parameter file tells the D4 the conditions that a sample will run under. This is a DQL file made with the XRD Wizard program. The parameter file includes scan settings, scan parameters, generator settings, and beam optics. Some of these settings are constant because they are hardware features of our D4.
To start, double-click the XRD Wizard icon on the Desktop (Figure 33).
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