Gocator Line Profile Sensors: User Manual
Safety and Maintenance • 16
Requirement Class 2M Class 3R Class 3B
Emission indicator Not required Not required Required*
Warning signs Not required Not required Required*
Beam path Not required Terminate beam at useful
length
Terminate beam at useful
length
Specular reflection Not required Prevent unintentional
reflections
Prevent unintentional
reflections
Eye protection Not required Not required Required under special
conditions
Laser safety officer Not required Not required Required
Training Not required Required for operator and
maintenance personnel
Required for operator and
maintenance personnel
*LMI Class 3B laser components do not incorporate these laser safety items. These items must be added and completed by customers
in their system design. For more information, see Class 3B Responsibilities below.
Class 3B Responsibilities
LMI Technologies has filed reports with the FDA to assist customers in achieving certification of laser
products. These reports can be referenced by an accession number, provided upon request. Detailed
descriptions of the safety items that must be added to the system design are listed below.
Remote Interlock
A remote interlock connection must be present in Class 3B laser systems. This permits remote switches
to be attached in serial with the keylock switch on the controls. The deactivation of any remote switches
must prevent power from being supplied to any lasers.
Key Control
A key operated master control to the lasers is required that prevents any power from being supplied to
the lasers while in the OFF position. The key can be removed in the OFF position but the switch must not
allow the key to be removed from the lock while in the ON position.
Power-On Delays
A delay circuit is required that illuminates warning indicators for a short period of time before supplying
power to the lasers.
Beam Attenuators
A permanently attached method of preventing human access to laser radiation other than switches,
power connectors or key control must be employed.
Emission Indicator
It is required that the controls that operate the sensors incorporate a visible or audible indicator when
power is applied and the lasers are operating. If the distance between the sensor and controls is more
than 2 meters, or mounting of sensors intervenes with observation of these indicators, then a second
power-on indicator should be mounted at some readily-observable position. When mounting the
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