Lamtec LT2 - Wet;Dry Measurement Deviations, Conversion Table

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11 Appendix
11.5 Wet/Dry Measurement Deviations, Conversion Table
NOTICE
The LT2 carries out measurements directly in the humid flue gases (wet measurement). When
extractive devices are used, flue gases are removed and prepared. "Dry Measurements" are
normally used here, since the humidity has been extracted from the flue gas. As a result, O
2
measurement values vary (see diagrams below).
Alternatively, the H
2
O share can be automatically calculated via a fixed factor.
To perform a liquid purification of the boiler is possible, if the probe is dismantled before. Per-
forming a liquid purification to an installed probe, can damage the probe. An error free opera-
tion is no longer possible.
NOTICE
For the liquid purification, the probe must be dismantled by all means. A liquid purification of
an installed probe will damage the probe.
Theoretical maximum deviations between wet and
dry measurement of the O
2
concentration with
natural gas (CH
4
) or oil (CH
2
)
X
as fuel
Calibration diagram and conversion table of the concentra-
tion values of wet (O
2(n)
) and dry (O
2(tr)
) measured oxygen
O
2
concentration range Constant K Gas/CH
4
Constant K oil/(CH
2
)
X
0 - 6% O
2
1.18 1.115
6 - 12% O
2
1.12 1.08
0 - 12% O
2
1.15 1.10