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II. Sensor Care and Cautions
As with any sensitive device, sensor must be handled carefully. The sensor membrane may require cleaning
from sea salt and dirt.
•
Do not clean the sensor with chemicals and remove the sensor
when painting in the cabin. The sensor should not get in close contact
with volatile chemicals such as solvents or other organic compounds.
High concentration and long exposure to such must be avoided. Ketenes, Acetone,
Ethanol, Isopropyl Alcohol, Toluene, etc. are known to cause drift of the humidity
reading – irreversibly in most cases.
•
Do not use high pressure washing and do not point a jet of high pressure at the sensor.
This can damage the membrane or lead to the penetration of water through the membrane.
•
The sensor is not light sensitive, but long exposure to direct sunlight can cause significant
heating of the sensor case. After high temperature exposure, the sensor may temporarily read
a negative humidity offset (typically -1 to -2 % RH). This offset slowly disappears again by itself
when the sensor is exposed to ambient conditions (typically within 1-3 days).
•
Sea salt on the sensor due to hydroscopy can lead to incorrect moisture readings. Wash the sensor
with a weak stream of fresh water.
•
The sensor has a solid metal body protected with resin, but the membrane at its end has a plastic
housing and may be damaged if the sensor is accidentally dropped or struck.
