19
8024592/2019-08| SICK
O P E R A T I N G I N S T R U C T I O N S | NAV210
Subject to change without notice
PRODUCT DESCRIPTION
3
Possible sources of error
Fig. 6: Possible sources of error when measuring
The laser beam is almost completely deflected on reflective surfaces (fig. 9, left). This means
that an object hit by the deflected beam may be detected instead of the reflective surface.
Objects that are smaller than the diameter of the laser beam (fig. 9, right) cannot reflect
the laser light's full energy. The energy of the non-reflected part of the laser light is lost. This
means the range is less than would theoretically be possible due to the reflective property
of the object's surface.
3.4.2
Sensing range of the NAV210
The sensing range of the NAV210 depends on the remission of the object to be detected.
The better a surface reflects the beams it is hit by, the greater the range of the NAV210 is.
Table 6: Typical remissions
Material
Remission
Black car paint, matte
5 %
Black photo mounting board, matte
10 %
Gray concrete
18 %
White cardboard
90 %
White plaster
100 %
Reflective tape
3000 %
