TESTO 350 Maritime V2, Instruction Manual

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6 Using the product
69
8. Perform steps 4 and 7 for further criteria accordingly.
9.
Press [Finished] .
6.2. Measuring
6.2.1. Preparing for measurement
If no combustion air temperature (AT) probe is connected,
the temperature measured by the thermocouple of the flue
gas probe, or the external thermocouple connected to the
probe socket during the zeroing phase, is used as the
combustion air temperature.
Note
Neither the flue gas probe nor the external
thermocouple must be inserted into the flue gas
duct during the zeroing phase.
All dependent parameters are calculated using this value.
This method of measuring combustion air temperature is
sufficient for systems dependent on ambient air. However,
ensure that the flue gas probe is near the intake duct of
the burner during the zeroing phase! If a combustion air
temperature probe is connected, the combustion air
temperature is measured continuously via this probe.
Following the zeroing phase, the currently measured
temperature is displayed as the flue gas temperature (FT).
The combustion air temperature (VT) is continuously
measured by the temperature sensor installed in the meas.
box. The fresh air required for the zeroing phase is drawn in
through the exhaust if no fresh air valve (option) is installed
and through the valve inlet if a fresh air valve is installed.
The flue gas probe can thus already be inside the flue gas
channel before or during the zeroing phase.
Exception: when using an analyzer unit with no fresh air
valve and overpressure in the flue gas duct, the flue gas
probe must be removed from the flue gas duct for zeroing.
The testo 350 can be operated as follows:
• lying down
• hanging horizontally down by its handle
• plugged vertically to the wall bracket by the handle
To prevent measuring errors the position of the testo 350
must not be changed during a measurement.