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Colour detection in miniature format

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article image A colour sensor in a miniature housing.
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SICK's CSM 1 colour sensor has a small design with great colour detection. The sensor is ideal for all applications in which objects in tight mounting conditions are to be identified, sorted and inspected on the basis of their colour.

Although only as large as a sugar cube, and thus particularly compact, the CSM 1 offers some enormous advantages. Thus the colours and tolerance values to be detected can simply be taught-in.

Switching frequencies of up to 1.5 kHz permit colour detection at high throughput rates, e.g. in insertion and packaging plants.

Colour detection is of major importance in the packaging industry. Packaging materials and the objects to be packaged must often be identified, sorted and inspected by means of their colour.

Furthermore, colour shifts can be used as marks for starting cutting or wrapping processes, for example. At the same time, machines are increasingly becoming more compact - and thus the mounting space available for sensors is getting tighter.

The CSM 1 is a colour sensor in a miniature housing that meets these demands without limiting ease of use and detection reliability.

The CSM 1 operates with a 3-colour LED as a transmitter light source. Red, green and blue light are emitted and reflected from the target objects.

Reflectivity is evaluated by the colour sensor's microprocessor with regard to the spectral colour distribution, saturation and brightness.

The values determined for the colour composition of the target object are compared with stored reference values and the permissible tolerances, and a switching output is activated if they match.

The reference value and the three selectable tolerance levels are easily taught-in.

The CSM 1 has a wide field of application, particularly in automated packaging technology. Its most frequent tasks include:

* The assignment and inspection of packaging.

* Checking presence and position.

* Monitoring donor processes.

* Detecting coloured print marks.

* Detecting labels or revenue stamps.

* Checking completeness.

* The assignment and monitoring of caps.

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