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Section 6. Maintenance and Troubleshooting
6-2
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.
1 year
• Replace anemometer bearings.
• Calibrate the rain gage.
• Calibrate the HMP45C probe.
2 years
• Calibrate the pyranometer (some users suggest yearly).
• Calibrate the HMP45C temperature/humidity sensor.
• Replace the wind vane potentiometer and bearings.
4 - 5 years
• Replace sensor cables as required.
Rain Gage Calibration Check
1. Secure a metal can that will hold at least one quart of water.