Draught Measurement - TESTO 325-3 Instruction Manual

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T325-3
254.5
100
Initialisation phase
0.00
5
Symbol for draught
Draught measurement/Gas flow pressure
The flue gas probe is used to measure draught. Draught can be
measured before or after a flue gas measurement.
Draught can only be measured if the pump is switched off.
If the draught is measured following flue gas measurement
there will still be impact pressure in the hose, after the
pump is stopped, which first has to be reduced (approx.
30 seconds).
The analyser's position should not be changed when
draught is being measured.
Any remaining condensate in the flue gas probe
must be removed (shake the probe with the tip
nearest the ground).
Do not switch between rechargeable battery and mains
operation when measuring draught (fluctuations in voltage
may influence the measured result).
Initialising the pressure sensor:
Probe must be outside the flue.
Negative sign means negative pressure, positive sign means
positive pressure in the flue.
measurement
appears
Example of measurement
0.977
9
Data is not
saved
Data is saved.
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measurement
menu.