12. Perform a pressure measurement
The draft measurement allows to check if the flue of the boiler correctly clears flue gas caused by the combustion.
12.1. Perform a draft measurement
➢ Connect the flue gas probe on the analyser.
➢ Turn on the analyser.
➢ Go to the “Measurement” menu with the keypad then press OK.
The analyser performs the gas auto-zero: remaining time and a progress bar are displayed on the screen.
➢ Go to “Pressure” with the keypad then press OK.
➢ Go to “Draught pressure” with the keypad then press OK.
Measurement launches and the analyser displays the draft.
12.2. Perform a differential pressure measurement
➢ Plug on P+.
➢ Turn on the analyser
➢ Go to the “Measurement” menu with the keypad then press OK.
The analyser performs the gas auto-zero: remaining time and a progress bar are displayed on the screen. The pressure measurement
remains possible.
➢ Go to “Pressure” with the keypad then press OK.
➢ Go to “Diff. Press.” with the keypad then press OK.
➢ Press the “Auto-zero” function key to perform a digital auto-zero.
Measurement launches and the analyser displays the differential pressure.
12.3. Perform a flue gas velocity measurement
➢ Connect a Pitot tube on the analyser (for more details, see page 35).
➢ Turn on the analyser.
➢ Go to the “Measurement” menu with the keypad then press OK.
The analyser performs the auto-zero: remaining time and a progress bar are displayed on the screen.
➢ Go to “Pressure” with the keypad then press OK.
➢ Go to “Flue gas velocity” with the keypad then press OK.
The measurement launches and the analyser displays the differential pressure.
12.4. Link the measurement to a customer
When the measurement has been performed, it is possible to link it to a customer registered in the analyser or to a customer unregistered in the
analyser that must be created.
➢ Press the function button.
The analyser displays the list of recorded customers.
➢ Select a customer with up and down arrows then press OK or create a customer (see page 22) then select it.
The analyser displays the list of available boilers.
➢ Select the boiler with up and down arrows then press OK or create a boiler (see page 23) then select it.
The analyser backs to the measurement screen.
12.5. Add the measurement to a group
The group function has to be activated (see page 17).
Once the measurement is linked to a customer and a boiler, it is possible to add it in a group in the instrument, or create a group:
The analyser proposes to add the measurement to a group.
➢ Go to YES and press OK.
➢ Go to the required group with the arrows and press OK, or create a group (see page 24).
The analyser backs to the measurement screen.
12.6. Print the results
It is possible to print the results on the ticket:
➢ Press the function button.
Results are printed on the ticket.
See page 17 for the printing configuration.
28 Perform a pressure measurement
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