Hilti PD-C Manual Del Usuario página 23

Possible measurement errors Measurement errors are possible when
the operating temperature range is not observed, when there is a
high concentration of particles in the air, when the lens is dirty, when
measurements are taken from unsuitable surfaces or when the product
is used incorrectly.
▶ After switching on and while using the product, always pay attention
to the information and warnings displayed on the touchscreen.
▶ Check the accuracy of the product before using it for measuring.
▶ When the product is brought into a warm environment from very cold
conditions, or vice-versa, allow it to become acclimatized before use.
Incorrect settings may have damaging consequences. Incorrect
settings, e.g. due to use of a measuring extension of a different length,
may lead to incorrect results and consequential damage.
▶ Always pay attention to the information and warnings displayed on
the touchscreen.
▶ Make sure that you use the correct settings when taking measure-
ments.
In addition to the safety rules listed in the individual sections of these
operating instructions, the following rules must be strictly observed at
all times. The product and its ancillary equipment may present hazards
when used incorrectly by untrained personnel or when used not as directed.
▶ Keep all safety instructions and information for future reference.
▶ Stay alert, watch what you are doing and use common sense when
working with the product. Do not use the product while you are tired
or under the influence of drugs, alcohol or medication. A moment of
inattention while operating the product may result in serious personal
injury.
▶ Do not render safety devices ineffective and do not remove information
and warning notices.
▶ If the product is opened improperly, laser radiation in excess of Class 2
may be emitted. Have the product repaired only by Hilti Service.
▶ Tampering with or modification of the product is not permitted.
▶ Check that the product functions correctly each time before use.
▶ Measurements taken from surfaces with low reflectivity in highly reflective
surroundings may be inaccurate.
▶ Measurements taken through panes of glass or other objects may be
inaccurate.
▶ The measurement may be incorrect if the conditions under which the
measurement is taken change rapidly, e.g. due to people walking through
the path of the laser beam.
▶ Do not point the product toward the sun or other powerful light sources.
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