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5 Commissioning
5.2.5 Positioning of the ionisation electrode
Observe the following points when positioning the ionisation electrode (lance):
• Select a position so that the sensor electrode as well as the counter electrode (burner noz-
zle possibly with additional electrodes for increasing the effective area) remain in contact
with the flame in the entire control range of the burner.
• The sensor electrode should immerse into the hot part of the flame, however, the temper-
atures prevailing there should not exceed the lance specifications.
• To check the optimal electrode position, the ionisation DC current is measured via the
shunt measuring principle at X14 or the 0/4..20mA output on terminal X14. For further in-
formation, see chapter 4.3 Functional DescriptionFlame intensity output.
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