ELTRA CS-2000, Руководство пользователя

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Analysis
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In order to make the work easier, two different rods (2/3) are supplied with the analyzer.
Make sure that the boat stop (4) is in the right position. See picture below.
Fig. 11: Pushing the combustion boat into the furnace
With the insertion rod (2) push the combustion boat into the furnace until the stop is felt.
Fig. 12: Combustion boat removing
To remove the combustion boat (1) grab it with the hook (3) and pull it out.
NOTICE
The combustion boat (1) should be removed immediately at the end of the analysis. During
removal, the hot combustion boat (1) might burn dust or sample remains in the combustion
tube, thereby altering the base line of the infrared system. When the base line is not stable after
starting analysis, the following message appears in the status window of the software: “Waiting
for stability”.
Only after this message disappears and the message “Analysis” appears in its place, the
combustion boat can be entered into the furnace.
Remark
The sample weights are in reasonable range when they are appropriate to the sensitivities of
the IR-cells and to the path IR lengths. If not, the analysis condition can be improved by sample
weight variation.
Generally, the weight has an optimum size when the peaks on the screen reach the middle of
the range, i.e. the peak maximum goes up to 4 to 6 volts.
The sample weight should be reduced when the IR-cell is saturated. However, when the weight
is lower than 100 mg, the accuracy will be reduced due to the samples being not perfectly
homogenous and due to lower weighing accuracy.
When the samples have high content of volatiles, they should be analyzed like oil. See chapter
“Applications“
.