Page 20 ecom-J2KN
pro
8.3. O
2
check
This measurement is performed by room-independent plants like
gross calorific value plants. It is determined if exhaust gas flows into
the combustion air (O
2
content drops down / CO content may be rise)
and herewith influence on the combustion quality.
For this analysis a special multi-hole
probe (optional accessory) should be
used. If the value indicated is stable,
press the key <Memory> (disk symbol)
to store the value in the intermediate
memory. If a printout of the values
should occur simultaneously to the re-
cording in the intermediate memory,
press <F2> (the complete content of the
intermediate memory will be printed
out).
8.4. Flow measurement (option)
This measurement can be done with a
pitot tube. At first the pitot factor of the
pitot tube must be entered („Adjust-
ments“ / „Internal“ / „Pitot factor“).
After connecting the pitot tube to the
instrument, the zero point of the sensor
can be set with <F4>. With <F1> the
cross section of the flow channel can be
entered (needed for calculation of the
flow rate). After the pitot tube is posi-
tioned in the flow channel, the display
shows the speed (m/s), the flow rate
(Nm
3
/h) and the differential pressure
(Pa). If the value indicated is stable,
press <Record> to store the value in
the intermediate memory. If a printout of
the values should occur simultaneously
to the recording in the intermediate
memory, press <F2> (the complete
content of the intermediate memory will
be printed out).
O2
19.5
%
CO
3
ppm
Draught
0.01
hPa
O2 value in air 25.11.07
recorded!
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