TESTO 300 - Carry out Gas Path Check; Use of Flue Gas Probe

14 Performing the measurement
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14.1.2 Carry out gas path check
Regularly check the measurement system (measuring instrument + flue
gas probe) for leaks.
In particular, too high an O2 value may be an indicator of a leaking
measurement system.
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| Gas path check.
14.1.3 Use of flue gas probe
Check thermocouple before use
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The thermocouple of the flue gas
probe must not be touching the probe
cage.
Bend the thermocouple back if
necessary.
Align flue gas probe
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The thermocouple must be freely
exposed to the flue gas flow.
Align the probe by turning it as
required.
Search for corestream
✓
The tip of the probe is in the corestream of the flue gas.
1
Select Corestream.
2
Start corestream search: tap .
3
Perform zeroing. Please follow the instructions.