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Set Sensor Parameter
optoNCDT 1420
7.4.2 Measurement Task
The measurement task contains choice of the measuring object (target). The choice of a target loads a pre-
defined sensor configuration which achieves the best results for the chosen material.
Measurement
task
Standard Suitable for materials made of ceramics, metal or filled plastics
Changing surfaces 1 Suitable e.g. for Printed circuit boards (PCB) or hybrid materials
Material with penetration 1 Suitable for plastics (POM, Teflon), materials with large penetra-
tion depth of the lase
The choice of measuring object
preferences can be observed in the
diagram Video signal on the right
by means of the position of the blue
peak marking in relation to the video
signal (raw signal). It should prefera-
bly hit in the area of the highest point
(peak) of the video signal.
Setting: Standard Material with penetration
Fig. 29 Example: Video signals (extract) with measuring object material POM
In the setting Standard the peak marking (measurement value) of the plastics example POM does not hit
the focus of the real peak as its base is distorted asymmetrically by means of penetration of the laser light.
This is possible only if the measurement task was set to Material with penetration.
In the setting Changing surfaces a compromise between penetration and standard finish is chosen
which achieves optimum results for both materials. This can also be seen in the diagram distance values
(Meas) by means of the different distance values for the respective measurement tasks.
1) Available for the sensor models ILD1420-10/25/50.
Grey shaded
fields require a
selection.
Value
Dark-bordered
fields require you
to specify a value.
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