TESTO 300 - Zeroing Gas Sensors; Mean Value Calculation

14 Performing the measurement
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14.3.2 Zeroing Gas Sensors
Zeroing of the gas sensors can be started manually.
>
| Zeroing Gas Sensors

The gas sensors are zeroed.
testo 300 NEXT LEVEL without probe zeroing option in the flue
gas:
The flue gas probe must be in fresh air during the zeroing phase (30
seconds)!
testo 300 NEXT LEVEL with probe zeroing option in the flue gas:
The flue gas probe may already be in the flue gas duct during the
zeroing phase (30 seconds).
14.3.3 Mean value calculation
The mean value calculation option is only available in the country
versions x, y, z...
The mean value calculation option can only be set for the following
measurement types: Flue gas, Draught, Differential pressure,
Differential temperature and CO Ambient.
1
Select required measurement type.
2
Call up function: | Options | Mean value calculation | On

The list for mean value calculation is opened.

The start button changes to .
3
Determine the measuring rate (1 sec - 120 sec). The required value can
be entered directly in the field on the first two lines of the display.
4
Confirm with .
5
Determine the measuring time (30 sec - 90 min). The required value
can be entered in the field.
6
Confirm with .
7
Start mean value calculation with .