analysis, the burned sample in the crucible looks like normally combusted sample. If so, check
the bypass valve V4. See chapter “Cleaning Solenoid valves”.
Pos: 3.68 /0025 Üb erschriften/E LTRA 1.1 Übersc hriften/11 IR sig nal does n ot come down to th e base line at th e end of analysi s @ 7\ mod_1381404509 510_9.docx @ 49850 @ 2 @ 1
3.34 IR signal does not come down to the base line at the end of analysis
Pos: 3.69 /0010 E LTRA/0015 s ervice_instructio ns/CS-2000_s ervice/05Faults_C S-2000/0 685 Modul IR sign al does not co me down to the base line @ 9\ mod_1425541 763229_9.doc x @ 74537 @ 3 333 @ 1
There are several different reasons for this effect
1. Long combustion of a very low carbon sample:
: Programm screenshot (graph example 1)
It appears like a long tailing at the end of the peak. It appears in the low carbon range only and
the distance to the base line is in the range of 10 to 50mV. Depending on the blanks of the
crucibles and on the oxygen purity, the level of the tailing can be as high as 100mV. When the
burning is extremely long, the level of the low carbon tailing even starts to grow.
Possible solutions:
- Reduce the analysis time
- Increase the comparator level of the low carbon range,
- Reduce the generator time.
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