Leuze electronic HT3CI User manual

HT3CI

Label sensor

Leuze electronic GmbH + Co. KG

[email protected]

In der Braike 1 D-73277 Owen Tel.: +49 (0) 7021 573-0

We reserve the right to make changes – 2019/09/24 – 50142030

www.leuze.com•

1Figure part

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

ÄAlign the label sensor at an angle of approx. 15°…20° to horizontal.

ÄIf possible, use the BTU200M-D12 mounting system (part no. 50117255).

AHT3CI label sensor

BBTU200M-D12 mounting system

CRod ⌀12mm

DContainer

Adjustment and alignment

ÄPush the BTU200M-D12 mounting system (B) without label sensor onto the

rod (C). Lightly tighten both screws.

ÄIncline the mounting plate of the mounting system approx. 15°…20°.

ÄAlign the label sensor (A) so that the optical outlet falls centrally on the con-

tainer (D).

ÄSecurely tighten both screws on the mounting system.

ÄScrew down label sensor (A) to the mounting plate of the mounting system

(B).

ÄCheck clearance (approx. 35mm) and setting of the label sensor.

Setting the label sensor

AAligning the label sensor

The label sensor evaluates the signal difference between a free glass surface

(specular reflection) and a surface with a label (diffuse reflection). For optimum

adaptation to the conditions, the sensitivity of the label sensor can be adjusted via

the operational control.

Application (typical) Clear signal difference

between the free glass

surface and the label sur-

face, e.g., paper label

Small signal difference

between the free glass

surface and the label sur-

face, e.g., foil label.

Adjustment via opera-

tional control

Gently turn the operational control (multiturn poten-

tiometer) on the device until the yellow LED no longer

illuminates.

Observation After adjustment, the label sensor is in a stable OFF

state and shows no faulty switching on the bare glass

surface without label.

If the label is turned into the detection range of the la-

bel sensor, the label sensor detects the label over the

entire length of the label.

NOTICE

Procedure in the event of faulty switching on the glass surface!

ÄRepeat the adjustment.

ÄCheck whether a stable switching behavior is achieved with a

slightly changed inclination.

This manual suits for next models

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