ELOVIS
3 Laser Protection
3.1
µ
SPEED-
SMARTSENSOR
L
ASER
D
EVICE
3.1.1 C
HARACTERISTICS
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
µSPEED-smartsensor
Laser Data are listed in the following Table 7.
Laser class
3B
Visible laser radiation
780 nm (red)
Output power at the intersecting point
of the beams
< 25 mW
Power of a partial beam
< 12,5 mW
Spot diameter
> 0.5 mm
Max. irradiation up to 360 mm behind the
output aperture (both beams)
< 400 W/m
2
Max. irradiation at 360 mm or more
behind the output aperture (one beam)
< 200 W/m
2
Max. irradiation at 20 m or more
behind the output aperture
< 25 W/m
2
Divergence angle
horizontal 1.6 mrad
vertical 0.8 mrad
Table 7:
µSPEED-smartsensor
Laser Data
3.1.2 S
AFTEY FEATURE
µSPEED-smartsensor
has a special safety feature:
Without wiring the emergency shut-off input (see 2.2.2) the laser is always shut-off.
This shut-off input has to be connected with a key switch (which is not part of the scope
of delivery), whose key can only be pulled out during laser off status, and has to be
connected additionally to one or more emergency shut-off devices.
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