Campbell Scientific CM6/CM10 Tripod Weather Station Installation - Manual (Page 64)

Section 6. Maintenance and Troubleshooting
6.1.3 Desiccant
Enclosure humidity is monitored in the ET Enclosure and MetData1 systems
by an RH chip incorporated into the connector board. Change the desiccant
packs when the enclosure RH exceeds 35%. The RH chip should be changed
every 3 to 5 years.
In standard weather stations, a humidity indicator card is provided with the
enclosure. A small RH sensor (10162) can be purchased separately to record
the RH inside the enclosure. Change the desiccant when either the card or the
sensor read about 35% RH.
Desiccant may be ordered through Campbell Scientific (DSC 20/4).
Desiccant packs inside of the dataloggers do not require replacement under
normal conditions.
6.1.4 Sensor Maintenance
Sensor maintenance should be performed at regular intervals, depending on the
desired accuracy and the conditions of use. A suggested maintenance schedule
is outlined below.
1 week
• Check the pyranometer for level and contamination. Gently clean, if
needed.
• Visually inspect the wind sensors and radiation shield.
1 month
• Check the rain gage funnel for debris and level.
• Do a visual/audio inspection of the anemometer at low wind speeds.
• Check the filter of the temperature/humidity sensor for contamination.
General Maintenance
• An occasional cleaning of the glass on the solar panel will improve its
efficiency.
• Check sensor leads and cables for cracking, deterioration, proper routing,
and strain relief.
• Check the tripod or tower for structural damage, proper alignment, and for
level/plumb.
6 months
• Clean the temperature/humidity sensor.
• Clean the Gill Radiation Shield.
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