Gocator Line Profile Sensors: User Manual
Safety and Maintenance • 15
Laser Classes
Class 3R laser components
Class 3R laser products emit radiation where direct
intrabeam viewing is potentially hazardous, but the
risk is lower with 3R lasers than for 3B lasers. Fewer
manufacturing requirements and control measures
for 3R laser users apply than for 3B lasers. Eye
protection and protective clothing are not required.
The laser beam must be terminated at the end of
an appropriate path. Avoid unintentional
reflections. Personnel must be trained in working
with laser equipment.
Class 3B laser components
Class 3B components are unsafe for eye exposure.
Usually only eye protection is required. Protective
gloves may also be used. Diffuse reflections are
safe if viewed for less than 10 seconds at a
minimum distance of 13 cm. There is a risk of fire if
the beam encounters flammable materials. The
laser area must be clearly identified. Use a key
switch or other mechanism to prevent
unauthorized use. Use a clearly visible indicator to
show that a laser is in use, such as “Laser in
operation.” Restrict the laser beam to the working
area. Ensure that there are no reflective surfaces in
this area.
Labels reprinted here are examples only. For accurate specifications, refer to the label on your
sensor.
For more information, see Precautions and Responsibilities below.
Precautions and Responsibilities
Precautions specified in IEC 60825-1 and FDA CFR Title 21 Part 1040 are as follows:
Requirement Class 2M Class 3R Class 3B
Remote interlock Not required Not required Required*
Key control Not required Not required Required – cannot remove
key when in use*
Power-on delays Not required Not required Required*
Beam attenuator Not required Not required Required*
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