TESTO 330, Instruction Manual

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6 Using the product
51
6.2.1.2. Using the modular flue gas probe
Checking the thermocouple
The thermocouple of the flue gas probe must not lie against the
probe cage.
> Check before use. Bend the thermocouple back if necessary.
Aligning the flue gas probe
The flue gas must be able to flow freely past the thermocouple.
> Align the probe by turning it as required.
The tip of the probe must be in the hot spot of the flue gas flow.
> Align the flue gas probe in the flue gas duct so that the tip is in
the hotspot (area of the highest flue gas temperature). As a
visual aid, the display shows the current temperature with a
green bar. The red marking indicates the maximum measured
temperature during the hotspot search. If the
symbol
appears, the temperature is outside the measuring range of the
flue gas probe.
The measuring value of the red marking and the
symbol can only be cancelled by restarting the flue gas
menu.
RGS