Apogee Instruments SIF-121-SS 소유자 매뉴얼 - 페이지 16

{카테고리_이름} Apogee Instruments SIF-121-SS에 대한 소유자 매뉴얼을 온라인으로 검색하거나 PDF를 다운로드하세요. Apogee Instruments SIF-121-SS 19 페이지. Infrared radiometer

MAINTENANCE AND RECALIBRATION

Blocking of the optical path between the target and detector, often due to moisture or debris on the filter, is a

common cause of inaccurate measurements. The filter in SIF series radiometers is inset in an aperture but can

become partially blocked in four ways:

Dew or frost formation on the filter.

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.

Dust and dirt deposition in the aperture and on the filter (usually a larger problem in windy

environments). Dust and dirt are best removed with deionized water, rubbing alcohol, or in extreme

cases, acetone.

4. Spiders/insects and/or nests in the aperture leading to the filter. If spiders/insects are a problem,

repellent should be applied around the aperture entrance (not on the filter).

Clean inner threads of the aperture and the filter with a cotton swab dipped in the appropriate solvent. Never use

an abrasive material on the 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 infrared radiometers 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-