Campbell Scientific UT20 and UT30 Tower-based Weather Stations - Manual (Page 67)

UT20 and UT30 Tower-based Weather Stations
Desiccant packs inside of the dataloggers do not require replacement under
normal conditions.
9.1.4 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.
1 year
• Replace anemometer bearings.
• Calibrate the rain gage.
• Calibrate the HMP45C probe.
• Check calibration of HMP50 RH Probe; replace RH chip if necessary.
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