Lamtec LT3, Quick Reference

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5 Maintenance
5.1.9 Calibrating the Probe
It is recommended to activate MAINTENANCE mode before every running a calibration, see
chapter
5.1.6 Activate/deactivate Maintenance Mode . This disables probe failures and error
conditions. After successful calibration MAINTENANVCE mode must be deactivated again.
A correct and regular probe calibration increases measuring precision.
The probes can be calibrated by
• reference measurement or
• test gas
For calibration using a reference measurement, an flue gas analyser is required. The probes
can then be calibrated when installed / whilst combustion is taking place.
For the test gas calibration, the KS1D-HT is be provided with a test gas connection. It can then
be calibrated when installed / whilst combustion is taking place. A testing device is available
for the test gas calibration of the KS1D standard (type 656R2000)(see Chapter
5.1 Checking/
Calibrating the KS1D Combination Probe ). Calibration must take place when the probe is dis-
assembled.
The following calibrations must be performed with the probe after commissioning and/or probe
replacement:
1 Offset calibration (required; see Chapter 5.1.9.1 Offset Calibration perform to 21 % O2 )
– Adapts the O
2
measured value to the ambient conditions. In the process, a known envi-
ronment with 21 vol.% O
2
must be present.
2 O
2
calibration (recommended; see Chapter 5.1.2 Checking/Calibrating the O
2
Electrode )
– Adapts the O
2
measured value to the operating conditions around a typical operating
point.
3 CO
e
calibration (recommended; see Chapter 5.1.3 Checking/Calibrating the CO/H
2
Elec-
trode )
– Adapts the CO
e
measured value to the operating conditions of the combustion system.
NOTICE
For good measuring precision, it must be guaranteed that the correct fuel curve is set for the
system (e.g., BS1 = light fuel oil EL or BS2 = natural gas) during operation and for calibration
with a reference measurement. The factory set fuel curve is natural gas.
NOTICE
For the greatest possible measuring precision, your own burner and fuel specific characteristic
curve can be determined and stored. In order for the generally valid fuel curves BS1 and BS2
not to have to be changed, BS3 is unassigned for this purpose.