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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 cool and dry location.
g)
Precautions should be taken to ensure that the laser beam is not unintentionally
directed at mirror-like (mirrored) surfaces (e.g. mirrors, metal surfaces, windows)
and more importantly, at flat or concave mirror-like surfaces.
* The hazard distance is the distance from the laser at which beam irradiate 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 EDM of laser class 3R resp. III a has a hazard distance of
1000m (3300ft). After this distance, the laser beam rates as Class 1 (= direct beam viewing is
not hazardous).
18.2 Laser Plummet
This instrument is Class2/
Ⅱ
product, Class 2 level products have follows standards:
IEC60825-1:1993 “Radiation safety of laser products”
EN60825-1:1994+A
Ⅱ
:1996 “Radiation safety of laser products”
Do not stare at the laser beam or push it to others. Avoiding dangerous.
