Installation and setting
The details on installation and on label sensor setting take into account a typical
application for detecting the label on a transparent container, e.g., mineral water in
a glass or PET bottle with paper label.
– Having a particularly strong influence on the function are color and surface
structure of the container, container contents, the geometrical arrangement
of the label sensor (angle to the horizontal as well as distance between label
sensor and container) and especially the label.
– The label sensor evaluates signal differences between the bare container
surface and the label surface. As long as there are clear signal differences
between the container surface and the label surface, the label sensor func-
tions very robustly. A predominantly white paper label on a white PET milk
bottle can, under some circumstances, not be detected due to the low signal
difference.
In the event of operating problems, change just one parameter and then observe
the effect of the measure. Necessary changes could be:
– Adjust the sensitivity via operational control (multiturn potentiometer)
– Increase or decrease the angle to the horizontal
– Increase or reduce the distance between label sensor and container
Mounting instructions
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Align the label sensor at an angle of approx. 15° … 20° to horizontal.
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If possible, use the BTU 200M-D12 mounting system (part no. 50117255).
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A HT3CI label sensor
B BTU 200M-D12 mounting system
C Rod ⌀12 mm
D Container
Adjustment and alignment
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Push the BTU 200M-D12 mounting system (B) without label sensor onto the
rod (C). Lightly tighten both screws.
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Incline the mounting plate of the mounting system approx. 15° … 20°.
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Align the label sensor (A) so that the optical outlet falls centrally on the con-
tainer (D).
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Securely tighten both screws on the mounting system.
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Screw down label sensor (A) to the mounting plate of the mounting system
(B).
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Check clearance (approx. 35 mm) and setting of the label sensor.
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