ZLDS11X sensors are optical displacement measuring devices for non contact precision measurement of distance or thickness, width and difference .
The ZLDS11X is a compact unit in which optics, sensor, and signal processing electronics are all integrated. The distance to an object is detected by means of the triangulation principle. A focused laser beam forms a spot on the measuring object. The image of the spot is reflected onto a position detector, a CCD camera, and the ZLDS11X converts this position into the distance to the object by advanced mathematical procedures.
The output signal is provided in 3 different manners. One digital output, an RS232 or RS422 serial output, provides the distance to the object with a frequency of 1000, 2000, 5000 or 10000 Hz acording to Model. At the same time two analog outputs deliver the measured distance, one as a 1 - 9 V DC signal and the other as a 4 - 20 mA current loop.
-Application area-
The applications where the ZLDS112 sensors can be used are innumerable. They extend from laboratories to food-, medical- and car industry as well as all kind manufacturing – simply wherever a non-contact precision measurement is advantageous.
A few examples where the ZLDS112 sensors are being used:
Food Industry, medical industry, laboratories, wood industry, rubber industry and car industry.
-Measuring principle-
The Triangulation Technique is an Ancient Yet Very Accurate Way of Measuring Distance.
In a high quality laser sensor, a CCD-camera is used to record the emitted laser light. The way to illustrate this measuring principle is to follow a ray tracing from the laser optics to the target, and back to the CCD-camera.