Leica Geosystems TPS1100 Professional Series - User Manual - Manual (Page 131)

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TPS1100 - User Manual 2.2.1en Safety directions
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Integrated distancer (visible laser), continued
There follows here below an
interpretation of the main points in
the relevant section of the standard
quoted.
Class 3R laser products used on
construction sites and outdoors
(surveying, alignment, levelling):
a) Only qualified and trained persons
should be assigned to install,
adjust and operate the laser
equipment.
b) Areas in which these lasers are
used should be posted with an
appropriate laser warning sign.
c) Precautions should be taken to
ensure that persons do not look
directly, with or without an optical
instrument, into the beam.
d) The laser beam should be
terminated at the end of its useful
beam path and should in all cases
be terminated if the hazardous
beam path extends beyond the
limit (hazard distance *)) of the
area in which the presence and
activities of personnel are
monitored for reasons of
protection from laser radiation.
e) The laser beam path should be
located well above or below eye
level wherever practicable.
f) When not in use the laser product
should be stored in a location
where unauthorized personnel
cannot gain access.
g) Precautions should be taken to
ensure that the laser beam is not
unintentionally directed at mirror-
like (specular) surfaces (e.g.
mirrors, metal surfaces, windows).
But, more importantly, at flat or
concave mirror-like surfaces.
*) The hazard distance is the
distance from the laser at which
beam irradiance or radiant
exposure equals the maximum
permissible value to which
personnel may be exposed without
being exposed to a health risk.
Products with an integrated distancer
of laser class 3R resp. IIIa this
hazard distance is 1000m (3300ft). At
this distance, the laser beam rates as
Class 1 (= direct intrabeam viewing is
not hazardous).