Remarks about Laser Classes
Equipment with laser light sources is classed according to its AEL (Accessible Emission
Limit). A laser belongs to one of the classes 1, 2, 3A, 3B or 4. It is important to know that
the accessible radiation is the radiation emitted by the equipment when it is operating.
The overall laser power in both partial beams of the µSPEED measuring unit does not
exceed 25 mW. The laser gauge thus belongs to the low end of laser class 3B. Eye damage
could occur in the laser area and under unfavourable conditions. The laser area is shown
in chapter 4.3. It is possible to avoid the danger by taking suitable precautions such as
those in chapter 3. A danger only exists when looking directly into the beam or when the
reflected beam falls into the eye.
Any surface that does not cause a sharp reflection of the beam can be looked at without
any risk. This also applies to bright reflecting surfaces not made of metal, e.g. cable
insulation or foil. A laser reflection from a metal surface that diffuses light and with a
curvature radius < 5 mm, e.g. wire, is also harmless. Exposure, even a direct one, of the
skin to the radiations is also harmless. The complete characteristics of the µSPEED
measuring unit are given in chapter 3.1.1.
Laser Type Used
Maximum power
25 mW
Wavelength 780
nm
Laser class
3B
Table 1: Laser Data
Other properties of the laser gauge, how to set up correctly the measuring unit, as well as
references and source of the regulations and guidelines for laser protection are to be found
in chapter 3: Description of Laser Protection.
PRECAUTION MEASURES DURING OPERATION
Never use a measuring unit when it is not mounted! Please consider the information about
the laser area in chapter 3.2. A detailed description on how to mount correctly a measuring
unit is to be found in chapter 3 (Laser Protection).
- Kindly pay attention to the following regulations when using laser equipment:
- Prevention of accidents "Laser Radiation" BGV B2
- Guidelines for BGV B2
- DIN VDE 0837: Radiation Safety of Laser Equipment, Classification of Systems,
Requirements, User Guidelines
- DIN VDE 0836: VDE regulations on Electrical Safety of Laser Equipment and
Installations
Always switch off the laser when work is performed on the measuring unit!
Further, specific safety aspects are listed in the corresponding chapters.
ELOVIS GMBH is not responsible for accidents due to the inappropriate use of the
equipment and to ignoring laser protection regulations!
ID308
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