LDS Laser Diffraction Sensor


CERSA launched its first system for measuring the diameter of fine wires in 1986, the LDS, a revolutionary device using the optical principle of diffraction. A technology still used today and perfectly mastered by CERSA. It provides the highest possible accuracy, on the order of 0.1µm, for the non-contact measurement of cylindrical products down to very fine diameters: 5µm.
A system widely used by the major wire drawing and precious metal manufacturers. An accurate measurement that does not require averaging and a system without moving parts ensuring very good reliability and robustness (no rotating mirrors as with the competition).

Non-contact measuring instrument    

A compact measuring head contains the optical system and all the electronics. No external controller is needed to operate it. A system that can operate autonomously or connected to a PC equipped with measurement analysis software. 

Several models of LDS exist and cover a wide range of diameters from 5µm to 2mm.  CERSA’s reputation has been made with over 35 years of experience and so you can be assured of first-class measurement performances.

A gauge to measure the diameter of fine wires over 360°  

The LDS is available in single axis version for sample measurements.

  • off-line version:

Used as a stand-alone version by many fine wire manufacturers, and associated with a range of dedicated accessories, the LDS allows operators to control the quality of their production or incoming products: diameter measurement, ovality calculation, statistics, data recording, report printing, etc.

Single or dual axis laser micrometer for computing ovality in-line

The LDS is available in 1- and 2-axis (90°) versions for measuring ovality on production lines.

  • In-line version:

The LDS can also be used in-line in the 1-axis or 2-axis (90°) versions for the continuous monitoring of the wire diameter at the wire drawing machine exit. The dual-axis version provides a more precise indication of the wire ovalization for the detection of the slow wear of the dies. Many die manufacturers use it for indirectly checking the diameter of their dies by verifying the diameter of the wire so produced. A device that is easy to implement on the line and that, with its integrated display and digital output, quickly informs the user of any deviation from the set tolerances.

The LDS has several inputs-outputs (analog and digital) to communicate with a PC or PLC (see details on the downloadable data sheet).


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