Apogee Instruments S2-112 Manuel du propriétaire - Page 14
Parcourez en ligne ou téléchargez le pdf Manuel du propriétaire pour {nom_de_la_catégorie} Apogee Instruments S2-112. Apogee Instruments S2-112 17 pages. Ndvi sensors
Également pour Apogee Instruments S2-112 : Manuel du propriétaire (20 pages)
Imprimer la page
MAINTENANCE AND RECALIBRATION
Blocking of the optical path between the target and detector can cause low readings. Occasionally, accumulated
materials on the diffusers of the upward-looking sensor and in the apertures of the downward-looking sensor can
block the optical path in three common ways:
1. Moisture or debris on the diffusers (upward-looking) or in the apertures (downward-looking).
2. Dust during periods of low rainfall.
3. Salt deposit accumulation from evaporation of sea spray or sprinkler irrigation water.
Apogee Instruments upward-looking sensors have domed diffusers and housing for improved self-cleaning from
rainfall, but active cleaning may be necessary. Dust or organic deposits are best removed using water, or window
cleaner, and a soft cloth or cotton swab. Salt deposits should be dissolved with vinegar and removed with a cloth
or cotton swab. Salt deposits cannot be removed with solvents such as alcohol or acetone. Use only gentle
pressure when cleaning the diffuser with a cotton swab or soft cloth, to avoid scratching the outer surface. The
solvent should be allowed to do the cleaning, not mechanical force. Never use an abrasive material or cleaner on
the diffuser.
It is recommended that two-band sensors 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-