Baumer OADM 20I5 Series Benutzerhandbuch - Seite 23

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Baumer OADM 20I5 Series Benutzerhandbuch

4 Application hints

To reach the maximum accuracy of OADM 20 series laser distance sensors, keep an eye on the following

points:

Measuring on rough surfaces

All laser distance sensors are adjusted and linearized on a reference object. The object is a white ceramic

sheet with an absolutely flat surface. Many objects have a surface structure that is within the resolution of the

sensor or rougher. In such a case, the sensor with its small laser spot measures the distance including the

structure in contrast to a slide gauge that measures an average. For such applications, we recommend to

use a laser distance sensor with a laser line (OADM 20x55xx/S14F).



Flat surface

Rough surface !

What can you do if you have color edges?

Often objects have several color edges on the surface.

for example:

text !

Measure with

Laser Sensors

In the field, you have no guarantee that the spot is not falling on just a color edge that can cause a

measuring fault.

Also, when the object moves, you may get an incorrect signal for each color edge (it appears that the signal

is unstable or has spikes)

In such cases, we suggest to move the object (or sensor), take several measurement values and calculate

the average. The quantity of measurement values depends on the structure, the moving speed and the

accuracy you desire.