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Reliable position sensing in small bore cylinders

Reliable position sensing in small bore cylinders
Idec has added to its SA1E photoelectric sensor range with a convergent type which provides a more focused beam than the standard diffuse sensor. This means the object must reside in a well defined area 5 to 35mm in front of the sensor. Backgrounds are ignored and colour or material of the object has very little effect. Because the convergent type does not employ a moving adjustable lens, its cost is cheaper than a background suppression sensor, but it can still can be used to perform that function, because of its tight focused beam. 

Typical applications include detection of ICs mounted on PCBs, ignoring the board itself. To take advantage of its tight focused range, the small size of the SA1E enables it to be mounted extremely close to production lines.
 

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