Apogee SQ-627 Panduan Pemilik - Halaman 14

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MAINTENANCE AND RECALIBRATION

Blocking of the optical path between the target and detector can cause low readings. Occasionally, accumulated

materials on the diffuser of the upward-looking sensor can block the optical path in three common ways:

1. Moisture or debris on the diffuser.

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 a domed diffuser 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 abrasive material or cleaner on the

diffuser.

It is recommended that sensors 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/).