9. Maintenance
9.1 Cleaning
You can clean the probe body by wiping it with a moist cloth. Standard cleaning agents can
be used.
When cleaning, follow these precautions:
• Do not immerse the probe in liquid to clean it.
• Be careful not to block the filter when cleaning the probe. The optional sintered PTFE
filter is especially sensitive to blockage.
• When changing the
filter, you can use clean instrument air to gently blow any loose dirt
and filter material from the sensor. Do not attempt to clean the optical surfaces in any
other manner.
9.1.1
Chemical Tolerance
The following chemicals can be used to clean the probe:
• H
2
O
2
(2000 ppm), non-condensing
• Alcohol-based cleaning agents such as ethanol and IPA (70 % Isopropyl Alcohol, 30 %
water)
• Acetone
• Acetic acid
Avoid exposing the probe to chemicals for unnecessarily long periods of time. Do not
immerse the probe in a chemical, and wipe chemicals
o the probe after cleaning.
Chapter 9 – Maintenance
93
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