LI-COR LI7200RS, Инструкция по эксплуатации

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Note: Read the technical note called "Using CO
2
and H
2
O Scrubbers with
LI-COR Gas Analyzers" for information about the interactions between scrub
chemicals and the air.
See https://www.licor.com/documents/7i418s3uhd2uamoxfmjd.
Cleaning the Intake Cap and Screen
To clean the cap and screen, remove the intake cap assembly and back-flush it with
compressed air or water. You can immerse the intake cap assembly in boiling water
for a few minutes or soak it in an ultrasonic water bath. Usually, you should not
have to remove the screen from the cap. If you do need to remove the screen:
1
Insert a small screwdriver between the screen and intake cap.
Use caution to avoid damaging the cap and deforming the screen.
2 Carefully pull the screen out of the cap.
3
Assembly is the reverse of removal. Be sure the screen is seated fully in the cap.
Maintaining the Filter
How do you know when to clean the filter? Dust will accumulate in the filter over
time. The rate of dust accumulation will depend upon the amount of dust in the
air and the particle size of dust. Therefore, it is difficult to predict exactly when the
filter should be cleaned.
As dust builds up in the filter, the flow module will use more power to maintain
the flow rate. So, the best indicator of the filter status is a change in the power
required to run the flow module. When you install a new filter, record the Flow
Drive (%), or log that variable with your data. Over time, compare the flow drive %
with the initial value. The % will increase as the filter becomes clogged, indicating
that the pump must work harder to move air through the filter.
Section 5. Maintenance
5-7 Cleaning the Intake Cap and Screen