Performing The Measurement; Prepare For Measurement; Zeroing Phases - TESTO 300 Pro Smoke Edition Manual

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9 Performing the measurement

9 Performing the measurement

Prepare for measurement

9.1
1 Check the condensate trap fill level and if necessary empty trap, see
Section 10.5 Empty condensate trap.
2 Check the particle filter of the flue gas probe for contamination and
replace it in good time. If necessary, see Section 10.10 Check/replace
particle filter.

Zeroing phases

9.2
Measuring the combustion air temperature (Tamb)
If no external combustion air temperature probe is connected, the combustion
air temperature is measured via the integrated temperature probe.
Gas zeroing
The gas sensors are automatically zeroed after the instrument is turned on.
testo 300 without option of probe zeroing in the flue gas:
The flue gas probe must be in fresh air during the zeroing phase (30
sec)!
testo 300 with option of probe zeroing in the flue gas:
The flue gas probe can be in the flue gas duct during the zeroing phase
(30 sec).
>
Start zeroing of the gas sensors manually:
Draft/pressure zeroing
The pressure sensors are zeroed when a pressure measuring function is called
up.
testo 300 without option of probe zeroing in the flue gas:
The flue gas probe must be in fresh air during the zeroing phase! The
instrument must not be pressurized during zeroing!
testo 300 with option of probe zeroing in the flue gas:
The flue gas probe can be in the flue gas duct during the zeroing
phase. The pressure socket of the instrument must be free
(depressurized, not closed).
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