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GrainPro
®
Carbon Dioxide Analyzer Instruction Manual
MA4068RAD0718 - 2
5.4.4
If the Purging mode is selected.
a) CO
2
analyzer will display prompt “Remove tubes”.
Remove the tubes if it is connected, then proceed
to “Purging” Air (about 1 minute).
b) Purging of air is from internal to external tube of the
CO
2
analyzer.
c)
After “Purging” Air, page will return to the Main
menu.
NOTE:
Before sampling, it is advised to conduct “Purging”,
to ensure that the functionality of the CO
2
Analyzer is not
affected or damaged by the contaminants from the
surrounding environment.
5.4.5
If the Sampling mode is selected.
a) CO
2
analyzer will display prompt to verify if the
tubes were already removed.
b)
Press “Enter” Key
to start Zero Check (about 7
seconds).
c) Connect the 2 sampling tubes with dust filter to the
inlet and outlet gas sampling port, then press
“Enter” Key
for measuring CO
2
.
NOTE:
A dust filter must be connected in the inlet of
the gas sample line to prevent dust from entering the
instrument during measurement.
d) CO
2
analyzer will start measuring and logging the
concentration with date and time
e)
Press “Set” Key
to stop the sampling. Then the
average reading will display and will enter the next
page.
f) Remove sampling tubes for inlet and outlet and
press “Enter” Key
to proceed to “Purging” air
(about 1 minute).
g)
After “Purging” Air, page will return to the Main
menu.
