3.6.6
Sensing range
The scanning range of the device depends on the remission of the object to be
detected. The better a surface reflects the incident beam back to the device, the
greater the scanning range of the device.
1
2
Figure 12: Scanning range as a function of the target remission
Scanning range of the LMS500-20000 (HR)/LMS511-20100 (HR) and LMS511-10100 (SR) (no
filters activated; not affected by fog, rain or dust)
1
Remission [%]
2
Object distance [m]
Example for
: Up to a distance of 15 m, the LMS5xx (HR) can
detect objects from 3% remission. At a distance of 80 m, only objects with a remission
> 95% can be detected reliably.
3.6.7
Beam diameter and measuring point distance
As the distance from the device increases, the laser beam expands. As a result, the
diameter of the measuring point increases on the surface of the object.
The range-dependent diameter of the measuring point corresponds to the distance
(mm) x 0.0047 rad (HR) or 0.0119 rad (SR) + 13.5 mm.
2
3
1
Figure 13: Beam expansion
1
Beam diameter on the front screen = 13.5 mm
2
Expanded laser beam
3
Optical axis
Similarly, as the distance from the device increases, the individual measuring points
also grow further apart from one another. The distance between the measuring points
also depends on the selected angular resolution. With coarser angular resolution (e.g.
PRODUCT DESCRIPTION
3
8013796/1ALS/2021-03 | SICK
O P E R A T I N G I N S T R U C T I O N S | LMS5xx
21
Subject to change without notice
