YOKOGAWA CQ1, User Manual, Page: 11 / 268

ix
IM 80J01A01-01E
Laser Products Handling Precautions

Laser products are classified according to their exposure emission
limit determined by the wavelength and power characteristics of
laser beam. A different set of common safety standards applies to
each class of products. The product explained herein belongs to
Class 1. However, the equipment houses a Class 3B laser, which
is protected by the enclosure and the interlocks provided at
openings.

Only service personnel can remove the covers on which a warning
label is attached. If these covers are removed, Class 3B laser
beam will be emitted. Directly looking into Class 3B laser beam or
beam reflected on a mirror may cause eye damage and is
extremely dangerous. Exercise due caution when handling this
product.
(Reference)
In the IEC standard, the laser classes are briefly explained as follows:
Class 1
：
Essentially safe. Continue to look into the Class 1 laser will not cause any
danger.
Class 2
：
If the Class 2 laser is looked into for a period not more than 0.25 second, there is
no risk of danger.
Class 3B
：
Looking into the laser beam from this class of equipment is dangerous. Even if
the specification of the laser equipment used does not exceed this class, there
is still a risk of eye injury.
Safety Standards

A class 1 laser is safe under all conditions of normal use. This
means the maximum permissible exposure can not be exceeded.
This equipment is designed in accordance with the IEC60825-1
Radiation safety standards for laser products and these lasers
must be labeled with the following label, but are exempt from the
requirements of the Laser Safety Program.
Preventive Measures on Safety

Mirror reflection
Metals and other glossy reflective surfaces reflect the laser beam.
Exercise caution to prevent unexpected mirror reflection.

Beam path
Never look directly into the laser beam or touch the laser beam.
CLASS 1 LASER PRODUCT