6212A Manual Version 14.56.docx
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INTRODUCTION TO LASERCHECK
Overview
Lasercheck is designed to perform high speed, repeatable, non-contact measurements of surface roughness. A
built in visible laser diode emits a laser beam from the bottom of the gage illuminating the surface beneath it.
After striking the surface, the laser light is reflected and scattered back into the Lasercheck detection system.
The overall intensity and distribution of the reflected and scattered light is measured, digitized by Lasercheck
electronics, and then Ra roughness is calculated for the illuminated area. This Ra value is then displayed on the
LCD screen of the Lasercheck control unit. The Lasercheck Windows display and control software can be used to
display the real time Ra values in graphical and numeric format along with statistical parameters.
Lasercheck has been designed for a nominal height standoff of 0.1 inch
0.01 inches from the measurement
surface. Motions and vibrations within that tolerance range are monitored continuously and reflectance and
scatter distribution are normalized and corrected during every measurement cycle to ensure accurate results.
Surfaces are positioned 0.1 inches below the gage allowing non-contact measurements of the surface to be
made.
Measurements can be performed by manual pushbutton operation, or continuous high-speed measurements
controlled by Windows software, or fully automated high speed on-line measurements triggered by external
signals and the Windows software. At the end of a measurement sequence, the user is provided options for
performing additional measurements, saving the current measurements or exiting the measurement sequence.
When measurements are saved an ASCII file format can be created for reading into a variety of spreadsheet and
analysis software packages.