Apogee SL-610 소유자 매뉴얼 - 페이지 15

{카테고리_이름} Apogee SL-610에 대한 소유자 매뉴얼을 온라인으로 검색하거나 PDF를 다운로드하세요. Apogee SL-610 18 페이지. Pyrgeometer

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

repairs/).

(http://www.apogeeinstruments.com/tech-support-recalibration-