Laser analogue light barrier
February 2011
Sensors & Transducers
ASSTech’s A-LAS series of parallel laser barriers with homogeneous light distribution in round or rectangular cross-section is used for measuring, positioning and detection of objects starting from a size of 0,01 mm.
These compact products offer a wide range of apertures from 0,2 to 30 mm in a choice of 18 types.
The measuring principle is based on partial covering of the laser beam which leads to a voltage at the analogue output that is proportional to the degree of covering. The laser light beam emitted by the high precision optical unit allows detection of the smallest objects (eg, threads) even with large transmitter to receiver distances in ranges of up to 100 m, depending on the model and aperture.
The high precision apertures in the transmitters ensure optimum adaptation to the required application. The aperture guarantees a homogeneous light distribution on the beam and a sharp beam limitation.
For more information contact Anastas Schnippenkotter, ASSTech Process Electronics & Instrumentation, +27 (0)11 708 9200, [email protected], www.asstech.co.za
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