Installation and mounting
Leuze electronic GmbH + Co. KG
BCL 308
i
57
6.3.3 Avoiding total reflection – deflecting mirror scanner
For the BCL 308
i
with deflecting mirror, the laser beam exits at an angle of 105° to the rear housing wall.
An angle of incidence of 15° of the laser to the label has already been integrated in the deflecting mirror
so that the BCL 308
i
can be installed parallel to the bar code (rear housing wall).
Figure 6.8: Total reflection – line scanner
6.3.4 Avoiding total reflection – oscillating-mirror scanner
For the BCL 308
i
with oscillating mirror, the laser beam exits at an angle of 90° to vertical.
For the BCL 308
i
with oscillating mirror, the swivel range of ±20° (±12° for devices with heating) is to be
taken into account.
This means that in order to be on the safe side and to avoid total reflection, the BCL 308
i
with oscillating
mirror must be inclined upward or downward 20° … 30°!
Figure 6.9: Total reflection – BCL 308
i
with oscillating-mirror scanner
6.3.5 Mounting location
When choosing the mounting location, observe the following:
• Maintaining the required environmental conditions (temperature, humidity).
• Possible soiling of the reading window due to liquids, abrasion by boxes, or packaging material resi
-
dues.
• Lowest possible chance of damage to the BCL 308
i
by mechanical collision or jammed parts.
• Possible extraneous light (no direct sunlight or sunlight reflected by the bar code).
Distan
ce ac
c. to r
eadin
g field
curve
s
Bar code
The BCL 308
i
with deflecting mirror should be
mounted parallel to the bar code.
15°
Zero position
NOTE
Mount the BCL 308
i
with oscillating mirror in such a way that the exit window of the bar code
reader is parallel to the object. This will result in an angle of inclination of approx. 25°.
Zero p
osition
Distan
ce acc
. to
readin
g field
curve
s
Bar code
±25°
The BCL 308
i
should be mounted in such a way
that the scanning beam is incident on the bar code
at an angle of inclination greater than ±25° to ver
-
tical.
