TESTO 350 - NO Addition; Cxhy-Sensor; NO 2 Addition

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6.1.4.1. NO
2
addition
The NO
2
addition value can be calculated when the NO
2
sensor is
not installed.
The setting of the NO
2
addition value can be password protected,
see Password protection, page 57.
Activating the function:
> [
] → Sensor settings → [OK] → NO2 addition →
[Change].
Possibly:
> Enter the password: [Enter] → Enter password → [Next] →
[OK].
Setting the NO
2
addition:
> Set parameter → [OK].
6.1.4.2. CxHy-Sensor
The CxHy-Sensor can be activated/deactivated.
The HC-Sensor menu under Sensor settings is only
displayed if an HC sensor is connected.
This sensor is a Pellistor which always requires a certain amount of
O
2
to operate (approx. 2% O
2
). This sensor would be destroyed at
lower values. The sensor therefore switches off at inadequate O
2
values. If it is known from the beginning that values below 2% do
exist, the sensor can also be switched off manually. CxHy-Sensor
On starts the flue gas analyzer with a zeroing phase (30s).
For proper functioning the sensor is heated up to approx.
500°C, duration: approx. 10min. This means that the
sensor needs to be zeroed again 10min after the device
has been switched on, in order to prevent drifting (into the
"minus" range).
Activating the function:
> [ ] → Sensor settings → [OK] → HC-Sensor
Switching the CxHy sensor on/off
1. [Change].
2. Select setting: [▲], [▼]
3. Confirm the entry: [OK]
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