Thickness measurement using two, non-contact laser sensors

One of the most commonly-requested applications is thickness measurement using two, opposing laser displacement sensors. The basic premise for this applicaiton is to aim sensors at the two sides of an object. If you know the readings of laser A and laser B and the fixed separation distance between the laser sensors, one can easily determine the thickness of an object. One must take important considerations to make sure that the laser is aimed perpendiculary to the surface. If the target material is moving, such as with continually-cased metals, it is necessary to synchronize the laser sensors so that they take distance samples at exactly the same time.

The following picture depicts a thickness measurement application where Laser-view Technologies integrated a complete hardware and software solution for a components manufacturer. The manufacturer was producing plates of various contours and was currently measuring its thickness with manual callipers. Laser-vew was hired to make a semi-automated measuring statioin using non-contact laser measuring sensors. They chose two AR600 series sensors because of their superb accuracy and simple RS232 interfacing. Today, Acuity suggests using AR700 sensors as upgraded replacements to the AR600 series.

For more information about AR600 laser sensors, please contact Acuity. For information or a quotation for a turnkey thickness measurement system, please contact Laser-view Technologies of Exton, Pennsylvania.