LI-COR LI7200RS, Инструкция по эксплуатации

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Section 5. Maintenance
Figure 5-1. Slide the top end of the sensor head away from the bottom to remove the
optical path.
The optical bench has a PVC insert as the optical path. You can use mild soap and
water, isopropyl alcohol, vinegar, or water to clean the optical path.
Do not use acet-
one, ammonia, chlorine, or wire brushes to clean the path, as irreparable damage to
the PVC insert can occur.
Reassemble the sensor head and perform a zero and span calibration as described in
User Calibration on page 4-1.
Replacing the Internal Chemicals
Important: Power off the gas analyzer (disable the power supply or disconnect
the power cable from the LI-7550) before conducting any maintenance that
involves disassembly or disconnecting cables. Disassembling the instrument or
detaching or attaching head cables while the instrument is powered on may dam-
age the instrument or result in a loss of data.
There are three small plastic bottles, each containing Ascarite II and magnesium
perchlorate, in the upper and lower analyzer housings. The chemicals keep the
source and detector housings free of CO
2
and water vapor. They bottles should be
recharged with fresh chemicals annually (or every 6 months in hot, humid cli-
mates). Replacement "charged" bottles are available from LI-COR in sets of three
5-4 LI-7200RS Enclosed CO₂/H₂O Analyzer