User Manual

6 Using the product
46
Draught/pressure zeroing
The pressure sensors are zeroed when a pressure measuring
function is called up.
The flue gas probe must be in the fresh air during the
zeroing phase / the instrument must not be pressurised
during zeroing.
6.2.1.3. Using 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 centre of the flue gas flow.
> Align the flue gas probe in the flue gas duct so that the tip is in
the core current (area of the highest flue gas temperature).