MICRO-EPSILON
X9751109-B060097MSC
31
8.3.2
Calibration
The calibration of the sensor occurs over the complete matrix and is independent of the
selected measuring field.
Figure 8.6 shows an extract from the sensor inspection log of an scanCONTROL2800-
25 (see also the sample in the annex). The chart is verticaly tilted across from the
inspection log to show the correlation with Fig. 8.5.
The trapezoidal shape of the measuring field results from the projection onto the CMOS
matrix. The standard measurement range is framed in the center.
The black points indicate the areas where the measurement error exceeds the specified
linearity limit of 0.05 mm. In the sample this occurs for only 1.07 % of the
measurements. In the standard measurement range there was no exceeding of the limit.
It can be seen that an extension of the measuring field is more effective in the width
than in the depth if the measurement error should not significantly exceed the specified
limits. At both ends of the depth range, and particularly in the remote corners, the
measurement error increases.
constant offset 0.00958213 mm
425566 measuring points of distance coordinates
of which 112917 (26.53%) in standard measurement range
4559 measuring points (1.07%) with deviation > 0.05 mm
of which 0 (0%) in standard measurement range
Fig. 8.6: Error distribution of the z coordinates (sample from the sensor inspection log of
an scanCONTROL2800-25)
i
IMPORTANT!
Do not select the measuring
field too deep (z) in the
extended measurement
range.
-20
-10
0
10
20
Distance z to the sensor [mm]
55
60
70
80
90
100
110
Position x on the laser line [mm]
Information for Operation
Standard measuring range
