vi QuantumDrive-4000 Manual
91-0027 Rev. E
Copyright © Nutfield Technology, Inc.
6/2010
SAFETY AND WARNINGS
Nutfield Technology products are designed to provide maximum flexibility and ease of use. Such a design
inherently requires the user to assure the overall safety of the configuration in use. Please follow carefully the
requests for the different laser classes.
It is the user's responsibility to ensure that the following is understood:
1)
Before installation or usage of a laser system you have to be aware about the regulations on laser safety.
2)
During maintenance activities of laser systems the laser safety classes may change. In that case the
customer has to take appropriate actions in advance.
3)
Certified lasers contain features to assist in their safe usage. These protective features and the protective
features within the Nutfield Technology products should not be defeated.
Prior to operating any configuration of the Nutfield Technology Scan Heads, you must make a
thorough analysis of system safety. Key information for this purpose is contained in this
manual. You must thoroughly familiarize yourself with all this information before proceeding.
The first consideration in a safety analysis is the laser mated to the Nutfield Technology product. The hazard
level of the laser is roughly indicated by the Laser Class label that is on the device. A brief description of the
radiation classes are shown in the following table.
Note that, besides radiation, lasers may present other hazards, e.g.; electric shock or creation of poisonous
fumes.
Nutfield Technology Scanners provide you with the ability to aim the laser beam over a roughly pyramidal
volume. The divergence of the focused beam beyond the focal point, which is a function of the lenses
selected and their position, can cause radiation to exit the pyramid. When analyzing safety, you must consider
all regions within this aiming pyramid, the divergent beam, and the effects of all focal possibilities in the zone
of hazard. Reflections must also be considered.
Classes and
Characteristics
of Lasers
L
ASER
C
LASS
D
ESCRIPTION
Class I
Lasers are not considered to be hazardous.
Class IIa
Lasers are hazardous if viewed for periods greater than
one thousand seconds.
Class II
Lasers are chronic viewing hazards.
Class IIIa
Lasers may represent acute, intrabeam viewing or chronic
or acute viewing hazards when viewed with optical
instruments.
Class IIIb
Lasers are an acute hazard to skin and eyes from direct
radiation.
Class IV
Lasers are an acute hazard to skin and eyes from direct or
scattered radiation.
