TESTO 350 Maritime V2, Instruction Manual

Page: 70 / 106

6 Using the product
70
Under ambient temperatures of <10°C the CO
2
-(IR) sensor
requires a shorter heat-up time to reach full measuring
accuracy. At -5°C this typically is 15min.
Before switching on
> Check whether:
• All system components are properly connected.
• All required probes / sensors are connected.
• The power supply of all system components is guaranteed.
During then zeroing phase
During the zeroing phase the sensors of the flue gas analyser are
zeroed. Zero point and drift of the sensors are checked. The
O
2
value is set to 21% O
2
.
> Make sure that the ambient air is free of interfering gases (e.g.
CO, NO) during the zeroing phase!
Before the measurement
> Set the fuel for the furnace system to be measured.
> Assign the required measurement parameters and units to a
display field in the measurement view.
> Activate the location to which the readings are to be assigned.
> Make sure that the gas outlets are free, so that the gas can
escape without obstruction. Otherwise the measurement results
may be corrupted.
Measurements with the CxHy sensor
WARNING
Dangerous mixture of gases
Danger of explosions.
> Perform measurements only in flue gas ducts.
> Only measure gases which do not form a combustible mixture
in the ambient air.
There must always be sufficient oxygen in the flue gas to
prevent the CxHy sensor from being destroyed. With an
O
2
content of less than 2% the CxHy sensor switches off
automatically (protective function). Higher concentrations of
silicones, H
2
S and sulphurous hydrocarbons can also lead
to the destruction of the CxHy sensor.