 Fibre optics are basically divided into two categories – glass and plastic transmission media. SensoPart offers its products in both versions. Fibre optics with glass are referred to as glass fibres. Use of a very high-quality mineral glass achieves much better performance data compared with plastic fibres. Attenuation is less with glass fibres than with plastic fibres.This makes it possible to cover considerably longer transmission paths. It is also possible to use glass fibres in very high temperatures with the appropriate sheathing. |
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Light barriers
Fibre optic transmitters and receivers run in two separate sheaths, which are connected to the sensor’s appropriate optical components by means of the glass fibre coupling. |
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Proximity switches
In the proximity switch version, fibre optic transmitters and receivers run in one cable and open into a light emission head. |
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Flexible scanning heads
Here the bundle of glass fibres ends in a thin, flexible stainless steel tube.The tube can be bent into the necessary shape “on site” when assembled in places which are difficult to access. |
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Cross-section converter
Whilst the emitted light is round with standard glass fibre optics, the light takes on the shape of a rectangle or a thin line with the cross-section converter. These lines of light are used for automatic edge control, amongst other applications. |
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Radial/axial light emission
When installation conditions are cramped, it can be of advantage to use fibre optics with lateral (radial) light emission.These are available with different branch lengths according to the model. |
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Sheathing material
The ambient conditions at the place of application are decisive here. For normal conditions, i.e. with no mechanical movement and strain, no dripping liquid, we recommend the version with metal filament coil, designation MSC. In more difficult operating conditions, in other words continuous mechanical movement and strain, splashes of water, oil, cooling agents as well as temperatures up to 120 degrees and even up to 160 degrees for short periods, a silicon-sheathed steel filament coil must be used, designation Si. This protects the glass fibres from pressure and traction. In such difficult conditions, the area of light emission should also be protected by a screw-on head with glass panel and Teflon seal (SensoPart accessory). |
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Conventional fibres vs. Co-axial fibres
Fibre optic transmitters and receivers run in two separate sheaths, which are connected to the sensor’s appropriate optical components by means of the glass fibre coupling. With conventional fibre optics (left-hand picture), both fibres run parallel to one another whilst with coaxial fibre optics the fibre-optic receivers run co-axially around the transmitter fibres.This is of advantage when using an additional optic, e.g. a smaller light spot and a better small part detection. |
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The three fixed focus versions LLKIRDxV6 enable utmost precision
in fixed focus distances (8/12/20 mm).
The variable focus LLKIRVV6 enables manual adjustment
of the focus within the range 8 – 20 mm. |
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