Apogee SL-510, Руководство пользователя

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15
MAINTENANCE AND RECALIBRATION
Blocking of the optical path between the target and detector, often due to moisture or debris on the silicon filter,
is a common cause of inaccurate measurements. SL-510 pyrgeometers have a domed housing for improved self-
cleaning from rainfall, but the flat filter surface of SL-510 and SL-610 pyrgeometers can become partially blocked in
three ways:
1. Dew or frost formation on the silicon filter (can be minimized by powering heater).
2. Salt deposit accumulation on the filter, due to evaporating irrigation water or sea spray. This leaves a thin
white film on the filter surface. Salt deposits can be removed with a dilute acid (e.g., vinegar). Salt
deposits cannot be removed with solvents such as alcohol or acetone.
3. Dust and dirt deposition on the window (usually a larger problem in windy environments). Dust and dirt
are best removed with deionized water, rubbing alcohol, or in extreme cases, acetone.
Clean filter with a cotton swab dipped in the appropriate solvent. Never use an abrasive material on the silicon
filter. Use only gentle pressure when cleaning the filter with a cotton swab, to avoid scratching the outer surface.
The solvent should be allowed to do the cleaning, not mechanical force.
It is recommended that pyrgeometers be recalibrated every two years. See the Apogee webpage for details
regarding return of sensors for recalibration (
http://www.apogeeinstruments.com/tech-support-recalibration-
repairs/ ) .