ALTANA Micro-TRI-Gloss μ - Manual (Page 10)

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English
General Information 3
The measurement unit consists of sensitive optical and electronic
precision parts. Provent it from being dropped or bumped or jostled!
Do not hold the unit by the measurement aperture. You should not allow
any foreign objects to get into this opening.
Do not expose the unit to direct sunlight for extended periods of time. Do
not store it in a hot or dusty environment. The case that comes with the
unit offers the best protection when the unit is being stored.
Avoid prolonged high relative humidity and do not allow water to form
from condensation (see Technical data).
Protect the measuring unit from moisture, chemicals and corrosive
vapors.
Check the film thickness sensor at regular intervals. The sensor must
have direct contact with the test surface. Therefore, correct measurement
results can only be obtained with a clean measuring probe. Keep the
sensor free of any dirt.
The holder and the unit housing are resistant to many solvents. However,
we cannot guarantee resistance to all chemicals. You should therefore
use a soft, moist cloth for cleaning. For clean excessive dirt and dust, use
ethanol or cleaning alcohol. Do not use any acetone!
Please note that batteries are special refuse and shall not be disposed of
together with household refuse. Pay attention to the producers
instruction or how to dispse of the battery.