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Lancom 4Portable Flue Gas Analyser
User Guide
6.4 Using the Flow Probe to Find the Flue Gas Velocity
Do not insert the probe into the stack until step 6.
1) From the Main Menu, select Flow.
2) Enter all of the information required
on this screen.
For Probe K Factor, enter 1.422.
For Density correction factor, enter
1.000 (unless an accurate density
comparison can be made).
Complete the remaining settings
on this screen to match your
requirements.
3) Press the exit key.
The Flow screen is displayed.
4) Select the Measured option.
The Connect probe... message is
displayed.
5) Connect the probe to the analyser (as
shown).
The probe must be positioned in
the stack so that the probe tip is
facingdirectlyintothegasow.The
“directionofow”indicatoronthe
handle can be used as a guide once
the probe has been inserted into the
stack.
6) Inserttheowprobeintothestack
using the sealing cone to position it.
7) Pressentertorecordtheow
measurements.
The Flow measurements are displayed
on the screen.
8) To store the readings, press the
Measurements button.
3
2
1
1 Black pipe
2 Clear pipe
3 Thermocouple
Probe tip
Direction of
gasow
Directionofowindicator