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Pulse ranging offers superior distance measurement technique

10 June 2009

The new VDM28 distance measurement sensor from Pepperl+Fuchs operates on the basis of pulse ranging technology (PRT). It is supplied in a standard photoelectric sensor housing and has applications in mass market, high-volume production environments. The VDM28 achieves a repeat accuracy of 5mm in an operating range of 0.2 to 8m and an absolute accuracy of 25mm.

PRT offers a superior distance ranging capability as the energy content of a pulse can be up to one thousand times higher than with sensors employing indirect constant-emission techniques such as phase correlation or analogue chip-based processes. In contrast to these, the VDM28 always provides accurate, reliable, clear and reproducible results, regardless of application conditions such as surface finishes, dark colours or extraneous light sources.

The VDM28 distance measurement sensor utilises visible red light and is available with switched or analogue outputs or in a more high-performance version with an integrated IO-Link interface.


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