8
Laser instrument of Class 3R is applicable outdoors and in construction field (measurement, defining lines,
leveling).
a) Only those persons who are trained with related course and authenticated are allowed to install, adjust,
and operate this kind of laser instrument.
b) Relevant laser warning symbols should be easily identified within the operating range.
c) Prevent any person to look straight at or use optical instrument to observe the laser beam.
d) To prevent the harm caused by laser, block the laser beam at the end of the working route. When the
laser beam exceeds the limit area (harmful distance*) and when there are motivating persons, stopping the
laser beam is a must.
e) The optical path of the laser should be set higher or lower than the line of sight.
f) When the laser instrument is not in use, take care of it properly. The person who is not authenticated is
not allowed to use.
g) Prevent the laser beam from irradiating plane mirror, metal surface, window, etc., especially
beware of the surface of plane mirror and concave mirror.
* Harmful distance means the maximum distance between the start point and the point which the laser is
weakened to a degree that doesn’t harm people.
* The harmful distance of built-in laser unit is 1000m (3300ft). When the
operation is beyond this range and laser beam is weakened to Class 1R, direct
staring at laser beam is less harmful.
To Next Page
Loading...
Need help?
General
